Redundant-architecture dc voltage converter

FIELD: electrical engineering; no-break power supply to responsible industrial and military transient-load consumers.

SUBSTANCE: proposed parallel redundant-architecture DC converter characterized in enhanced stability to switching pulse noise has (N + 1) similar DC/DC modules. Each DC/DC module incorporates microcontroller control system. DC/DC module control systems incorporate provision for data exchange over bus, type CAN-bus, and equally perform their functions, that is, they are not separated according to "Drive control system" and "Driven control system" criteria. Unique identical algorithms implemented in all microcontroller systems of DC/DC modules equally performing their functions provide for transfer of one of these modules (at rated load) to stand-by mode, uniform distribution of transient load among parallel-running DC/DC modules, automatic throw of stand-by DC/DC module in operation in case load rises above rated value or one of DC/DC modules fails, and informant peripheral control systems about occurrence of failure in converter and, hence, about its operation without stand-by power support. Failure message received by peripheral control system enables attending personnel to adequately respond to situation by recovering trouble-free operation of converter under redundant-power condition.

EFFECT: enlarged functional capabilities, uniform load distribution among parallel-running converter channels, enhanced load-carrying capacity and failure tolerance.

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The invention relates to the field of electrical engineering, in particular to probes consisting of several modules dual conversion voltage DC (Direct Current) to DC voltage (modules DC/DC)receiving power from the primary and backup network voltage DC with galvanic isolation of input and output circuits, and can be used for uninterrupted power supply of consumers with dynamically variable load different (mobile and stationary) objects of industrial and military purposes.

Known Converter (unit uninterruptible power supply) DC voltage supply network in the DC voltage necessary for uninterrupted power supply of consumers, consisting of a main channel conversion voltage containing an inverter, a transformer and a rectifier connected to the load and back-up channel containing a rechargeable battery or a similar channel voltage translation to be included in the job when the principal channel through switches (power options. Scientific and technical collection. M: "Association of developers, manufacturers and consumers of power. Issue 4, 2002. - p.29-35).

The disadvantage of this unit buspare oingo power is the time required for switching from primary to backup power, much more than the permissible interruption in power supply to consumers.

Known Converter MC firm "Interpoint", consisting of two identical channels convert the DC voltage on the base of the transistor, controlled pulse width modulator, transformer, current sensor primary winding of the transformer, rectifier, the output of the filter and the sensor voltage at the load (Secondary power supply company Interpoint. Vedantin. "Modern automation technology", 1997, No. 4. - page 6-15). The disadvantage of this Converter is that the input circuit of the source is not protected from impulse and switching surge coming through the mains, and that to ensure parallel operation of two channels of conversion (to each channel would give the same contribution to the total load current) used the method of "Dual-Phase-Shifted-DPPS" ("Dual phase/phase shift"), requiring careful selection of the output components of the channels of the Converter, as well as not providing 100% power output over the entire range of change of the supply voltage.

You know the uninterruptible power supply multi-roll consisting of a DC converters in number to the channels of the output voltage. DC-DC converters is made for the high-frequency power conversion and consist of the inverter control unit with pulse-width modulator and transformer rectifier unit (RF Patent for the invention №2221320 "uninterruptible power supply multi-roll", IPC 7 02J 7/34). The disadvantage of this device is that it does not provide parallel operation of channel transformation.

Known Autonomous power supply system, consisting of three power sources, each of which is through the controller connected to the load. Each controller contains a regulatory body, is enabled through the current sensor between the power source and the load, the control unit, the power summation, the sensor output voltage (RF Patent for the invention №2211478 "the Autonomous power system", IPC 7 G05F 1/59, 02J 1/10, 02J 7/34, 02J 9/00). The disadvantages of the system is that it does not provide protection regulators from transient voltage surges coming from the power supply, the lack of galvanic isolation between the input and output circuits, the lack of protection against current overloads and short circuits in the load or the cable connecting the load.

The closest to the technical nature of the claimed solution is p is OBRAZOVATEL constant voltage (RF Patent for useful model No. 44894 "Converter DC voltage", IPC 7 02J 7/34).

Converter DC voltage consists of the main (first) and backup (second) channel conversion, the first conversion contains the inverter of the first channel conversion, powered by the core network and connected to the primary winding of the transformer of the first channel conversion, the secondary winding of which is connected to the load through a rectifier of the first conversion and the second conversion contains the inverter of the second channel conversion, supplied from the reserve network and connected to the primary winding of the transformer of the second channel conversion, the secondary winding of which is connected to the load through a rectifier of the second channel conversion, the first control output load is connected to the input of the system control inverter main channel conversion, the second control output load is connected to the input of the system control inverter backup channel transformation.

The disadvantages of the Converter is as follows.

As the main power equipment inverter - the inverter of the first channel conversion and the inverter of the second channel conversion is connected to the mains directly, it is exposed to pulsed high-voltage surges (e.g., associated with commutation the mi overvoltage) and therefore may fail.

Since the system inverter control channel conversion is receiving power from the voltage applied to the load, or from voltage core network (for inverter control of the second channel conversion from voltage applied to the load, or from the voltage of the backup network), then in case of loss of voltage in the core network (for inverter control of the second channel conversion in the reserve network can cause complete or intermittent power system inverter control channel conversion (or control inverter of the second channel conversion). That is, the voltage loss of only one of the supply chains can lead to the loss of power user that voltage is present in the other network is for individual consumers absolutely invalid.

The lack of protection against short circuits in the load or the cables connecting the load to the inverter, can lead to the failure of the first or second channel.

The presence of two control systems individually for the first or second channel, perform similar functions, creates some hardware redundancy of the Converter and in the General case reduces its reliability.

The Converter can provide feed the load, consume power equal to the rated power of only the first or only the second channel, as their simultaneous operation with summation of the capacities of the channels on the total load is not provided.

The Converter as a whole is not fault-tolerant, that is, failure of power equipment or control system of one of the channels of conversion when working from a core network or from the reserve network may lead to loss of supply to consumers that consumers is unacceptable.

The objective of the invention is to improve the stability of the Converter to the effects of pulse-switching noise entering from the mains supply, the protection of the first and second channel power equipment inverter (filter-inverter-transformer-rectifier) against overloads and short circuits, extending the functionality of the Converter to ensure maximum continuity of his work, as well as ensuring uniform distribution of the dynamically changeable workload between multiple parallel channels conversion and increasing the load capacity and resiliency of the transducer.

This task is solved in that the voltage Converter DC with redundant parallel architecture consisting of a module channel is preobrazovaniya voltage DC (Direct Current) to DC voltage (DC/DC), the first conversion module DC/DC contains the inverter of the first channel conversion, the input of which is the first power entry module DC/DC, supplied from the core network and connected to the primary winding of the transformer of the first channel conversion, the secondary winding of which is connected to the load through a rectifier of the first conversion and the second conversion module DC/DC contains the inverter of the second channel conversion, the input of which is the second power entry module DC/DC fed back from the network and connected to the primary winding of the transformer of the second channel conversion, the secondary winding of which is connected to the load through a second rectifier channel conversion, the control voltage to the load through a voltage sensor connected to the first input of analog-to-digital Converter system control module DC/DC, analog-to-digital Converter system control module DC/DC connected to the first input of the microcontroller system control module DC/DC, the first output of the microcontroller system control module DC/DC via the power drivers power switches of the first channel conversion control module DC/DC connected to the inverter input of the first channel conversion, the second output of the microcontroller system control module DC/DC th the ez block drivers power switches of the second channel conversion system control module DC/DC is connected to the inverter input of the second channel conversion entered second, ..., nth and (N+1)th module DC/DC (same with the first module DC/DC), filters, pulse-switching overvoltage of the first and second channels of conversion, the sensor current of the inverter of the first and second channels of conversion, output filters of the first and second channels of conversion, the sensors of the load current of the first and second channels of conversion, the power supply from the primary and backup network circuit isolation circuit, real time clock system control module DC/DC, a non-volatile memory of the system control module DC/DC the HBA information exchange system management module DC/DC; bus information exchange, an external control system, and the filter pulse-switching overvoltage of the first channel conversion is enabled between the primary network and the inverter of the first channel conversion, the filter pulse-switching overvoltage of the second channel conversion is enabled between the backup network and the inverter of the second channel conversion, the current sensor inverter of the first channel conversion is enabled between the inverter of the first channel conversion and the primary winding of the transformer of the first channel conversion, the current sensor inverter of the second channel conversion is enabled between the inverter of the second channel conversion and primary about what modou transformer of the second channel conversion the inverter output of the first channel conversion is connected to the second input of the analog-to-digital Converter system control module DC/DC inverter output of the second channel conversion is connected to the third input of the analog-to-digital Converter system control module DC/DC sensor output current of the inverter of the first channel conversion connected to the fourth input of the analog-to-digital Converter system control module DC/DC sensor output current of the inverter of the second channel conversion is connected to the fifth input of the analog-to-digital Converter system control module DC/DC sensor output current load of the first channel conversion is connected to the sixth input analog-digital Converter system control module DC/DC sensor output current load of the second channel conversion is connected to the seventh input of the analog-to-digital Converter system control module DC/DC; between the rectifier output of the first channel transform, and load cascaded output filter of the first channel conversion and the sensor load current of the first channel conversion between the rectifier output of the second channel transform, and load cascaded output filter of the second channel conversion and the current sensor load W is the art of conversion, forming a total power output of the first module, DC/DC, to the second input-output of the microcontroller system control module DC/DC connected to the HBA information exchange system management module DC/DC, to the third input of the microcontroller system control module DC/DC connected to the non-volatile memory of the system control module DC/DC, the fourth - real time clock system control module DC/DC power supply input from a core network connected to the output of the filter pulse-switching overvoltage of the first channel conversion, the first output of the power supply from the core network connected to the input of power filter pulse-switching overvoltage of the first channel conversion, the second output of the power supply from the core network connected to the first input circuit isolation circuit, the input of the power supply from the backup network is connected to the output of the filter pulse-switching overvoltage of the second channel conversion, the first output of the power supply from the backup network is connected to the power input filter pulse-switching overvoltage of the second channel conversion, the second output of the power supply from the backup network is connected to the second input of the differential isolation of power circuits, output circuits isolation circuit connected to the power input of the microcontroller si themes control the first module, DC/DC, block drivers power switches of the first channel conversion system control module DC/DC, power drivers power switches of the second channel conversion system control module DC/DC, analog-to-digital Converter system control module DC/DC and HBA information exchange system management module DC/DC, the second input-output bus adapter information exchange system management module DC/DC, which is the information input-output of the first DC/DC connected to the bus information exchange, the first power input of the second, ..., nth and (N+1)-th modules DC/DC connected to the core network, the second power inputs of the second, ..., nth and (N+1)-th modules DC/DC connected to the backup network, the total power outputs of the second, ..., nth and (N+1)-th modules DC/DC connected to the load information of the inputs and outputs of the second, ..., nth and (N+1)-th modules DC/DC connected to the bus information exchange, to which is also connected input-output external control system.

In addition, the voltage Converter DC with redundant parallel architecture filters pulse-switching overvoltage of the first and second channels of transformation which have been connected in series inductance, the output electrolytic capacitor and a host of active suppression pulse-comm is operating overvoltages, consisting of parallel connected bipolar transistor with insulated gate and a resistor, and a sensor input voltage control circuit bipolar transistor with insulated gate consisting of series-connected comparator and block drivers bipolar transistor with insulated gate and to the first comparator input connected to the voltage sensor input voltage and the second input is a reference voltage from the voltage divider of two resistors, connected respectively to the power supply from the primary and backup network.

In addition, the voltage Converter DC with redundant parallel architecture microcontrollers control systems first, second, ..., nth and (n+1)-m module DC/DC is configured to control the voltage level of the primary and backup network, determine the voltage level of the primary and backup network within the acceptable range of voltages, generation of control actions on the inverters of the first and second channels of the transformation to stabilize the voltage at the load when the voltage level of the primary or backup network within the acceptable range of voltages, protection of the first and second channels conversion power equipment inverter (filter-inverter-transformator-rectifier) against overloads and short circuits, translation (at rated load) one of the modules DC/DC in "Hot standby", uniform distribution of the dynamically variable load between parallel modules DC/DC automatic commissioning of the backup module DC/DC with increasing load in excess of par or at a single failure (failure of one module DC/DC), informing the external control system of the denial of the Converter.

The essence of the invention lies in the fact that the proposed inverter DC with redundant parallel architecture has a wide functionality: protection channel power equipment inverter - filter-inverter-transformer-rectifier from the effects of pulse-switching overvoltages, penetrating from the mains supply; to protect the inverter against overloads and short-circuit currents; high load capacity and resiliency of the transducer.

The Converter consists of (N+1)-th number of identical modules, DC/DC, load capacity of each of which is equal to the value of the rated load divided by N. In each of the modules DC/DC has its own microcontroller based control system. System control modules DC/DC have the opportunity to exchange information on the bus (CAN-bus) and are equal is (i.e., not divided on the basis of "lead management system" and "Slave control system").

Original identical algorithms implemented in all microcontrollers peer systems management modules, DC/DC, translate (at rated load) one of the modules DC/DC in "Hot standby", the uniform distribution is dynamically variable load between parallel modules, DC/DC, auto switch on the back of the module DC/DC with increasing load in excess of par or at a single failure (failure of one module DC/DC), informing the external control system of the denial of the Converter (and, consequently, his work, without reserve power). Received by the external control system failure allows service personnel the necessary and timely steps to restore operation of the Converter in failover mode with redundant power "N+1" (replacement of the failed module DC/DC working on the module spare part kit).

Figure 1 shows the structural diagram of the voltage Converter DC with redundant parallel architecture.

Figure 2 presents the structural diagram of the filter pulse-switching overvoltages.

Figure 3 shows the block diagram of the algorithm enable the Converter.

figure 4 shows the block diagram of the algorithm set and uniform distribution of load Converter mode with redundant power "N-H" and without reserve power in case of failure of one of the modules DC/DC.

According to figure 1, the voltage Converter DC with redundant parallel architecture includes a first module DC/DC 3, the first channel of the first conversion module DC/DC 3 contains the inverter of the first channel conversion 11, the inlet of which is the first power input of the first module DC/DC 3 fed from the core network 1 and is connected to the primary winding of the transformer of the first channel conversion 13, the secondary winding of which is connected to the load 7 through rectifier channel conversion 14 and the second channel of the first conversion module DC/DC 3 contains the inverter of the second channel conversion 29, the inlet of which is the second a power input of the first module DC/DC 3 fed back from the network 2 and is connected to the primary winding of the transformer of the second channel conversion 31, the secondary winding of which is connected to the load 7 through rectifier of the second channel conversion 32, the control voltage on the load 7 through the voltage sensor 19 is connected to the first input of the analog-to-digital Converter system control module DC/DC 18, an analog-to-digital Converter system control module DC/DC 18 connected to the first input of the microcontroller system control module DC/DC 23, the first output of the microcontroller system control module DC/DC 23 is via the block driver power switches of the first channel conversion system control module DC/DC 20 is connected to the inverter input of the first channel conversion 11, the second output of the microcontroller system control module DC/DC 23 through the power drivers power switches of the second channel conversion system control module DC/DC connected to the inverter input of the second channel conversion 21, the filter pulse-switching overvoltage of the first channel conversion 10 is enabled between the host network 1 and the inverter of the first channel conversion 11, the filter pulse-switching overvoltage of the second channel conversion 28 connected between the backup network 2 and the inverter of the second channel conversion 29, the current sensor inverter of the first channel conversion 12 connected between the inverter of the first channel conversion 11 and the primary winding of the transformer of the first channel conversion 13, the current sensor inverter of the second channel conversion 30 connected between the inverter of the second channel conversion 29 and the primary winding of the transformer of the second channel conversion 31, the inverter output channel conversion 11 is connected to the second input of the analog-to-digital Converter system control module DC/DC 18, the inverter output of the second channel conversion 29 is connected to the third input of the analog-to-digital Converter system control module DC/DC 18, the sensor output current of the inverter of the first channel conversion 12 is connected to the included four is the input of analog-to-digital Converter system control module DC/DC 18, the sensor output current of the inverter of the second channel conversion 30 is connected to the fifth input of the analog-to-digital Converter system control module DC/DC 18, the sensor output current load of the first channel conversion 16 is connected to the sixth input of the analog-to-digital Converter system control module DC/DC 18, the sensor output current load of the second channel conversion 34 is connected to the seventh input of the analog-to-digital Converter system control module DC/DC 18; between the rectifier output channel conversion 14 and the load 7 series output filter of the first channel conversion 15 and the sensor load current of the first channel conversion 16, between the rectifier output of the second channel conversion 32 and the load 7 series output filter of the second channel conversion 33 and the sensor load current of the second channel conversion 34, forming a total power output of the first DC/DC 3, the second input-output of the microcontroller system control module DC/DC 23 connected to the HBA information exchange system management module DC/DC 27, to the third input of the microcontroller system control module DC/DC 23 is connected to the non-volatile memory of the system control module DC/DC 26, the fourth clock the real time of the system control the first module DC/DC 25, the power supply input from the core network 17 is connected to the output of the filter pulse-switching overvoltage of the first channel conversion 10, the first output of the power supply from the main network 17 is connected to supply input filter pulse-switching overvoltage of the first channel conversion 10, the second output of the power supply from the main network 17 connected to the first input circuit isolation circuit 22, the input of the power supply from the backup network 24 is connected to the output of the filter pulse-switching overvoltage of the second channel conversion 28, the first output of the power supply from the backup network 24 is connected to supply input filter pulse-switching overvoltage of the second channel conversion 28, the second output of the power supply from the backup network 24 is connected to the second input circuit isolation circuit 22, the output of the circuit isolation circuit 22 is connected to the power input of the microcontroller system control module DC/DC 23, block drivers power switches of the first channel conversion system control module DC/DC 20, block drivers power switches of the second channel conversion system control module DC/DC 21, an analog-to-digital Converter system control module DC/DC 18 and HBA information exchange system management module DC/DC 27, the second input output of hell is tera bus information exchange system management module DC/DC 27, an information input-output of the first DC/DC 3 connected to the bus information exchange 9, the first power input of the second 4, ..., N-th 5 and (N+1)-th 6 modules DC/DC connected to the core network 1, the second power inputs of the second 4, ..., N-th 5 and (N+1)-th 6 modules DC/DC connected to the backup network 2, the total power outputs of the second 4, ..., N-th 5 and (N+1)-th 6 modules DC/DC connected to the load 7, the information inputs and outputs of the second 4, ..., N-th 5 and (N+1)-th 6 modules DC/DC connected to the bus information exchange 9 to which is also connected to the input-output external control system 8.

According to figure 2, the filter pulse-switching overvoltage of the first 10 (figure 1) and the second 28 (1) channels of conversion contains serially connected inductance 35, the output electrolytic capacitor 37 and a host of active suppression pulse-switching overvoltages 38, consisting of parallel connected bipolar transistor with insulated gate and a resistor, and a sensor input voltage 36 and the control circuit bipolar transistor with insulated gate consisting of series-connected comparator 41 and block drivers bipolar transistor with insulated gate 42 and to the first input of the comparator 41 is connected to the voltage sensor input voltage 36, and the second the input reference voltage from which elites voltage of the two resistors 39 and 40, connected respectively to the power supply from the main 17 (figure 1) and the reserve network 24 (Fig 1).

Figure 3 flowchart of the algorithms algorithm enable the Converter, the following notation:

43 - the beginning of the algorithm enable the transducer;

44 is fed to the voltage Converter core network, the self-starting control systems of the first, second, ..., nth and (N+1)-th module DC/DC;

45 - poll voltage sensors control systems of the first, second, ..., nth and (N+1)-th module DC/DC;

46 - transmission voltages core network defined by the control system of the i-th module, DC/DC, other modules, DC/DC,

where i is any of the modules DC/DC (first, second, ..., nth and (N+1)-th);

47 - checking conditions for issuance of the i-th module DC/DC N parameter values of the load voltage from the other modules, DC/DC,

where N is the number of working modules DC/DC Converter, providing nominal load power;

48 - checking conditions for issuance of the i-th module DC/DC N-1 parameters values of the load voltage from the other modules DC/DC;

49 - checking conditions for issuance of the i-th module DC/DC N-2 parameter values of the load voltage from the other modules DC/DC;

50 - send a message about the availability of the i-th module DC/DC (from the "N+1" serviceable modules DC/DC) to the external management system;

51 - fixing in the external system management SOS the sustainability of the Inverter is ready to "return" rated capacity load with excess capacity "N+1"";

52 - send a message about the availability of the i-th module DC/DC ("N" serviceable modules DC/DC) to the external management system;

53 - fixing in the external control system of the Inverter is ready to "return" rated capacity load without reserve power";

54 - send a message about the availability of the i-th module DC/DC (from "N-1" serviceable modules DC/DC) to the external management system;

55 - fixing in the external control system of the Inverter is ready to "return" power, is equal to N-1/N rated power load;

56 - send a message about the availability of the i-th module DC/DC (from the "N-2" serviceable modules DC/DC) to the external management system;

57 - fixing in the external control system of the Inverter is ready to "return" power, lower N-1/N rated power load;

58 - the end of the algorithm enable the Converter.

Figure 4 flowchart of the algorithm set and uniform distribution of load Converter mode with redundant power "N+1" and without reserve power in case of failure of one of the modules DC/DC the following notation:

59 - the beginning of a cycle of the algorithm set and uniform distribution of load Converter mode with redundant power "N+1" and without reserve power in case of failure of one of the modules DC/DC;

60 op the OS voltage core network of the i-th module DC/DC;

61 - checking the condition of finding the voltage level of the core network in the valid interval values of voltage Uc1min≤Uc1≤Uc1max,

where Uc1- voltage core network;

Uc1min- the minimum voltage of the main network;

Uc1max- the maximum allowable voltage of the main network;

62 - formation increases control actions on the inverter first channel conversion of the i-th module DC/DC to stabilize the load output parameters of the transducer;

63 polling sensor voltage on the load of the i-th module DC/DC;

64 - checking conditions Un min≤Un,

where Unthe voltage at the load;

Un min- minimum allowable voltage at the load;

65 - the formation of the step-down control actions on the inverter first channel conversion of the i-th module DC/DC to stabilize the load output parameters of the transducer;

66 survey of the sensor voltage at the load of the i-th module DC/DC;

67 - the condition Un≤Un max,

where Un max- the maximum allowable voltage at the load;

68 - a survey of current sensor load the first channel of the conversion of the i-th module DC/DC ("N+1" serviceable modules DC/DC);

69 - the transfer value of the load current specified by the control system of the i-th module, DC/DC, other DC/DC;

70 - compare the value of the load current in the i-th module DC/DC values of the load current in the other modules DC/DC. Test conditions the Value of the load current in the k-th module DC/DC lowest";

71 - a survey of current sensor load the first channel of the conversion of the j-th module, DC/DC,

where j is any one running under load modules DC/DC (first, second, ..., nth and (N+1)-th);

72 - the transfer value of the load current specified by the control system of the j-th module, DC/DC, other modules DC/DC;

73 - checking conditions for obtaining the j-th module DC/DC N parameter values of the load current from the remaining modules, DC/DC,

74-

78 - checking the condition of finding the current value of the j-th module DC/DC permissible range of values of currents 0≤Icf-Ij/Icf≤Imin,

where Imin- valid indicator of the dispersion of values of currents j-x modules DC/DC;

79 - send a message "Emergency core network from the i-th module DC/ calculation of the j-th module DC/DC arithmetic mean value of the load current equal to Icf=∑Ij/N

where Ij- load currents of all j running under load modules DC/DC;

75 - checking conditions for Icp-Ij≥0;

76 - formation increases control actions on the inverter first channel conversion of the j-th module DC/DC to stabilize the load output parameters of the transducer;

77 survey to gauge the current load of the first channel conversion of the j-th module DC/DC; DC in external management system;

80 - self-locking operation of the inverter of the first channel conversion, the transition of the k-th module DC/DC and its control system in the "Hot standby";

81 send the message "Loss of reserve capacity Converter from the j-th module DC/DC control system of the k-th module DC/DC and the external control system;

82 - unlock operation of the inverter of the first channel conversion, the transition of the k-th module DC/DC and its control system in the operation mode "Hot standby";

83 poll voltage backup network i-m module DC/DC;

84 - checking the condition of finding the voltage level of the reserve network in the valid interval values of voltage USMP≤Uc2<Uc2max,

where Uc2- voltage network standby;

Uc2min- minimum allowable voltage of the backup network;

Uc2max- the maximum allowable voltage of the backup network;

85 - formation increases control actions on the inverter of the second channel conversion of the i-th module DC/DC to stabilize the load output parameters of the transducer;

86 survey of the sensor voltage at the load of the i-th module DC/DC;

87 - the condition Un min≤Un,

where Unthe voltage at the load;

Un min- minimum allowable voltage at the load;

88 - forming panisaldehyde impacts on the inverter of the second channel conversion of the i-th module DC/DC to stabilize the load output parameters of the Converter;

89 survey of the sensor voltage at the load of the i-th module DC/DC;

90 - the condition Un≤Un max,

where Un max- the maximum allowable voltage at the load;

91 - a survey of current sensor load the second channel conversion of the i-th module DC/DC ("N+1" serviceable modules DC/DC);

92 - the transfer value of the load current specified by the control system of the i-th module, DC/DC, other modules DC/DC;

93 comparison of the values of the load current in the i-th module DC/DC values of the load current in the other modules DC/DC. Test conditions the Value of the load current in the k-th module DC/DC lowest";

94 - a survey of current sensor load the second channel conversion of the j-th module, DC/DC,

where j is any one running under load modules DC/DC (first, second, ..., nth and (N+1)-th);

95 - transfer the values of the load current specified by the control system of the j-th module, DC/DC, other modules DC/DC;

96 - checking conditions for obtaining the j-th module DC/DC N parameter values of the load current from the remaining modules, DC/DC,

97 - calculation of the j-th module DC/DC arithmetic mean value of the load current equal to Icf=∑Ij/N

where Ij- load currents of all j running under load modules DC/DC;

98 - the condition Icp-Ij≥0

99 - formation increases control actions on the inverter of the second channel into the project for the j-th module DC/DC to stabilize the load output parameters of the Converter;

100 - survey of sensor load current of the second channel conversion of the j-th module DC/DC;

101 checking the condition of finding the current value of the j-th module DC/DC permissible range of values of currents 0≤Icf-In j/Icf≤Imin,

where Imin- valid indicator of the dispersion of values of currents j-x modules DC/DC;

102 send the message "Emergency back-up network" from the i-th module DC/DC to the external management system;

103 - self-locking operation of the inverter of the second channel conversion, the transition of the k-th module DC/DC and its control system in the "Hot standby";

104 send the message "Loss of reserve capacity Converter from the j-th module DC/DC control system of the k-th module DC/DC and the external control system;

105 - unlock operation of the inverter of the second channel conversion, the transition of the k-th module DC/DC and its control system in the operation mode "Hot standby";

106 - ending cycle algorithm set and uniform distribution of load Converter mode with redundant power "N+1" and without reserve power in case of failure of one of the modules DC/DC.

The proposed Converter operates as follows.

The first module DC/DC 3 Converter from the core network 1. The supply voltage of the core network 1 (figure 1) through the filter pulse-switching overvoltages first is the anal conversion 10 is supplied to the inverter of the first channel conversion 11, where it is converted into AC voltage supplied to the primary winding of the transformer of the first channel conversion 13. With the secondary winding of the transformer of the first channel conversion 13 voltage supplied to the rectifier of the first channel conversion 14 and further through the output filter of the first channel conversion 15 and the current sensor of the first channel conversion 16 to the load 7.

In addition, the supply voltage of the core network 1 from the output of the filter pulse-switching overvoltage of the first channel conversion 10 is supplied to the power supply from the main network 17, the voltage of the backup network 2 from the output of the filter pulse-switching overvoltage of the second channel conversion 28 is supplied to the power supply from the backup network 24. The voltage generated by the power supply from the main network 17 and the power supply from the backup network 24 arrive at the circuit junction of the power supply circuits 22 and corresponding galvanically isolated from the primary 1 and backup network 2 power input filter pulse-switching overvoltage of the first channel conversion 10 and the second channel conversion 28. With the output of the circuit isolation circuit 22 provides power to the power input of the microcontroller 23 system management module, DC/DC, power drivers power switches of the first channel conversion 20 is istemi control module DC/DC, block drivers power switches of the second channel conversion 21 system control module DC/DC, analog-to-digital Converter 18 system control module DC/DC adapter data bus 27 system control module DC/DC.

At the output circuits isolation circuit 22, the voltage required to power the components of the control system by the first module DC/DC Converter, are present if power is received from at least one network (core network 1 or network standby 2). Thus, the proposed Converter control system of the first module DC/DC can function to provide management inverters) up until the stored power from at least one network.

The voltage input to the filter pulse-switching overvoltage of the first channel conversion 10 (figure 1) and the filter pulse-switching overvoltage of the second channel transformation 28 (1), smoothed l-shaped inductive-capacitive filter 35-37 (figure 2). Pulse-switching surges coming over the network from the sensor input voltage 36 and having an amplitude higher than the reference voltage from the voltage divider of two resistors 39 and 40, "revealed" by the comparator 41. The comparator 41 with the help of block drivers bipolar transistor with an insulated ZAT is a PR 42 controls the operation of the node active suppression pulse-switching overvoltages 38, not "missing" (shunting) the pulse voltage output filters pulse-switching overvoltage of the first channel conversion 10 and the second channel transformation 28 (figure 1).

The control system of the first module DC/DC is a hardware-software system, with programs installed in the nonvolatile memory 26. After switching Converter is loading programs into RAM of the microcontroller 23 system control module DC/DC. To provide control voltages to the inverter input of the first channel conversion 10 from the core network 1 and the inverter input of the second channel conversion 28 from the backup network 2 and the voltage at the load 22 in the system control module DC/DC enabled analog-to-digital Converter 18. For generation of control actions on the inverter first channel conversion 11 and the inverter of the second channel conversion 29 in the system control module DC/DC included, respectively, the block driver power switches of the first channel conversion 20 and block drivers power switches of the second channel conversion 21.

The microcontroller 23 using analog-to-digital Converter 18 periodically polls the voltage values of the core network 1 (second input of the analog-to-digital preobrazovala what I 18) and the voltage at the load 7 (the first analog-digital Converter 18), forming through the block driver power key 20 corresponding control inputs to the inverter of the first channel conversion 11 to stabilize the load 7 output parameters of the first channel of the first conversion module DC/DC.

When damage in the power equipment of the first channel of the first conversion module DC/DC (the primary winding of the transformer of the first channel conversion 13, the secondary winding of the transformer of the first channel conversion 13, the rectifier of the first channel conversion 14, the output filter of the first channel conversion 15 and the current sensor of the first channel conversion 16) or in the load 7 (to supply the load cables) and, as a consequence, the occurrence of an overcurrent or short circuit, leading to the increase of the current in the primary winding of the transformer of the first channel conversion 13, a current sensor 12 generates a control signal received at the fourth input of the analog-to-digital Converter 18. Analog-to-digital Converter 18 converts the analog control signal from the current sensor 12 into digital and sends it to the microcontroller 23, which generates control inputs to the inverter of the first channel 11, reducing the inverter output current of the first channel 11 and, if necessary, blocking his work.

The second channel of the first module DC/DC 3 transducer R is worked from the back-up network 2 similar to the first.

The control system of the first module DC/DC provides the following main functions:

- a survey of the values of the input voltage of the inverter of the first channel 11 - voltage core network 1 (at the input of the inverter of the second channel 29 - voltage network standby 2) using analog-to-digital Converter 18;

poll voltages at the load 7 (at the output of the first and second channel of the first module DC/DC) using an analog-to-digital Converter 18;

- determining the location of the voltage level of the core network 1 (backup network 2) in the valid range of values of voltages;

- formation of control actions on the inverter of the first channel 11 (the inverter of the second channel 29) to stabilize the load 7 output parameters of the first (and second) channel convert the first DC/DC when the voltage level of the core network 1 (backup network 2) in the valid range of values of voltages;

- protection against current overloads and short circuits in the first (and second) channels convert the first DC/DC;

when the output voltage level of the core network 1 of the allowable range of voltages, the formation of the control actions on the inverter of the second channel 29.

Other modules DC/DC Converter are similar to the first. Description the block diagram of the algorithms enable preobrazovala who I am. After the filing of the supply voltage of the core network 1 to the Converter is self-starting control systems of the first, second, ..., nth and (N+1)-th module, DC/DC, each of which, after determining the value of the voltage on the core network transmits it to the other modules. Since the number N in each Converter is known, the number of received mutual message management system of each module DC/DC can determine in which mode the power delivered to the load, will be able to operate the Converter and to transmit to the external control system, an appropriate message. After receiving the command to start work from the external control system or after a timeout this command algorithm enable the Converter passes control algorithm set and uniform distribution of the load of the Converter.

The description of the flowchart of the algorithm set and uniform distribution of load Converter mode with redundant power "N+1" and without reserve power in case of failure of one of the modules DC/DC.

The algorithm provides the following basic functions of the Converter:

the control voltage at the load;

- conclusion in hot standby module DC/DC;

- manage the load current of each module DC/DC and aligned currents;

- commissioning work m the module DC/DC, in hot standby, when a load in excess of par or failure of one of the running under load modules DC/DC Converter;

- informing the external control system about events occurring during operation of the Converter.

When the control voltage on the load of the microcontroller 23 system management modules DC/DC receives information about the voltage level of the core network 1 to the inverter input of the first channel 11 (the input voltage of the Converter and the load 7 (the output voltage of the Converter) using part of the control system analog-to-digital Converter 18. Based on this control information, the microcontroller 23 generates control actions with the help included with the unit control system driver power switches of the first channel 20 to the inverter of the first channel 11, providing the required output parameters voltage DC/DC.

When you exit the allowable range of voltages (or even the loss of the supply voltage) in the core network 1, which is determined by the microcontroller 23 by controlling the voltage at the inverter input of the first channel 11, the microcontroller 23 detects the event and sends to the external control system, the message "Emergency core network, polls voltages backup network 2, and determines Nachod is the voltage level of the backup network 2 in the valid interval values of voltages, generates control actions with the help included with the unit control system driver power switches of the second channel 21 to the inverter of the second channel 29, providing the required output parameters voltage DC/DC.

When you exit the allowable range of stress values (or even the loss of the supply voltage) in the reserve network 2, which is determined by the microcontroller 23 by controlling the voltage at the inverter input of the second channel 29, the microcontroller 23 detects the event and sends to the external control system, the message "Emergency backup network, polls voltages of the core network 1, determines the presence of the voltage level of the core network 1 in the valid interval values of voltages, generates control actions with the help included with the unit control system driver power switches of the first channel 20 to the inverter of the first channel 11, providing the required output parameters voltage module DC/DC.

Next loop of the algorithm is repeated.

When considering the flowchart of the algorithm the implementation of the other features apparent and further explanation is not required.

Industrial applicability of the invention is defined by the fact that the proposed Converter can be manufactured in accordance with the above description and the drawings on the basis of the known komplektas the x products and technological equipment and used to power a variety of objects.

Thus, the proposed Converter has a high resistance to the effects of pulse-switching noise entering from the mains supply has a protection of the first and second channel power equipment from overload currents and short circuits, has a high load capacity and high availability.

Based on the above and on the results of our patent information search we believe that the proposed Converter DC voltage with redundant parallel architecture meets the criteria of "novelty", "inventive step" and may be protected by a patent of the Russian Federation for the invention.

1. The voltage Converter DC with redundant parallel architecture consisting of a first module of the dual conversion voltage DC (Direct Current) to DC voltage (DC/DC), the first conversion module DC/DC contains the inverter of the first channel conversion, the input of which is the first power entry module DC/DC, supplied from the core network and connected to the primary winding of the transformer of the first channel conversion, the secondary winding of which is connected to the load through a rectifier of the first conversion and the second channel convert the output module DC/DC contains the inverter of the second channel conversion, the entrance which is the second power entry module DC/DC fed back from the network and connected to the primary winding of the transformer of the second channel conversion, the secondary winding of which is connected to the load through a rectifier of the second channel conversion, the control voltage to the load through a voltage sensor connected to the first input of analog-to-digital Converter system control module DC/DC, analog-to-digital Converter system control module DC/DC connected to the first input of the microcontroller system control module DC/DC, the first output of the microcontroller system control module DC/DC via the power drivers power switches of the first channel conversion system management module DC/DC connected to the inverter input of the first channel conversion, the second output of the microcontroller system control module DC/DC via the power drivers power switches of the second channel conversion control module DC/DC connected to the inverter input of the second channel conversion, characterized in that it introduced the second, ..., nth and (N+1)th module DC/DC (same with the first module DC/DC), filters, pulse-switching overvoltage of the first and second channel conversion, the current sensors of the first inverter and the second channel conversion, the output the filters of the first and second channel PR is education, the sensors of the load current of the first and second channel conversion, the power supply from the primary and backup network circuit isolation circuit, real time clock system control module DC/DC, a non-volatile memory of the system control module DC/DC host bus adapter information exchange system management module DC/DC first module DC/DC; bus information exchange, an external control system, and the filter pulse-switching overvoltage of the first channel conversion is enabled between the primary network and the inverter of the first channel conversion, the filter pulse-switching overvoltage of the second channel conversion is enabled between backup and network the inverter of the second channel conversion, the current sensor inverter of the first channel conversion is enabled between the inverter of the first channel conversion and the primary winding of the transformer of the first channel conversion, the current sensor inverter of the second channel conversion is enabled between the inverter of the second channel conversion and the primary winding of the transformer of the second channel conversion, the output of the inverter of the first channel conversion is connected to the second input of the analog-to-digital Converter system control module DC/DC inverter output of the second channel conversion is connected to the third is during analog-to-digital Converter system control module DC/DC, the sensor output current of the inverter of the first channel conversion connected to the fourth input of the analog-to-digital Converter system control module DC/DC sensor output current of the inverter of the second channel conversion is connected to the fifth input of the analog-to-digital Converter system control module DC/DC sensor output current load of the first channel conversion is connected to the sixth input of the analog-to-digital Converter system control module DC/DC sensor output current load of the second channel conversion is connected to the seventh input of the analog-to-digital Converter system control module DC/DC; between the rectifier output of the first channel transform, and load series output filter of the first channel conversion and the sensor load current of the first channel conversion between the rectifier output of the second channel transform, and load cascaded output filter of the second channel conversion and the sensor load current of the second channel conversion, forming a total power output of the first module, DC/DC, to the second input-output of the microcontroller system control module DC/DC connected to the HBA information exchange system management module DC/DC, to the third input of the microcontroller system control the Oia, the first module DC/DC connected to the non-volatile memory of the system control module DC/DC, the fourth real - time clock system control module DC/DC power supply input from a core network connected to the output of the filter pulse-switching overvoltage of the first channel conversion, the first output of the power supply from the core network connected to the power input filter pulse-switching overvoltage of the first channel conversion, the second output of the power supply from the core network connected to the first input circuit isolation circuit, the input of the power supply from the backup network is connected to the output of the filter pulse-switching overvoltage of the second channel conversion, the first output of the power supply from the backup network is connected to the power input filter pulse-switching overvoltage of the second channel conversion, the second output of the power supply from the backup network is connected to the second input of the differential isolation of power circuits, output circuits isolation circuit connected to the power input of the microcontroller system control module DC/DC, power drivers power switches of the first channel conversion system control module DC/DC, power drivers power switches of the second channel conversion system control module DC/DC, analog-to-digital Converter system control module DC/DC and HBA information exchange system management is possible by the first module DC/DC, the second input-output bus adapter information exchange system management module DC/DC, which is the information input-output of the first DC/DC connected to the bus information exchange, the first power input of the second, ..., nth and (N+1)-th modules DC/DC connected to the core network, the second power inputs of the second, ..., nth and (N+1)-th modules DC/DC connected to the backup network, the total power outputs of the second, ..., nth and (N+1)-th modules DC/DC connected to the load information of the inputs and outputs of the second, ..., nth and (N+1)-th modules DC/DC connected to the bus information exchange, to which is also connected to the input-output external control system.

2. The voltage Converter DC with redundant parallel architecture according to claim 1, characterized in that the filters are pulse-switching overvoltage of the first and second channel conversion contain inductance connected in series, the output electrolytic capacitor and a host of active suppression pulse-switching overvoltages, consisting of parallel connected bipolar transistor with insulated gate and a resistor, and a sensor input voltage control circuit bipolar transistor with insulated gate consisting of series-connected comparator and block drivers bipolar transistor with isolated is a private gate, and to the first comparator input connected to the voltage sensor input voltage and the second input is a reference voltage from the voltage divider of two resistors, connected respectively to the power supply from the primary and backup network.

3. The voltage Converter DC with redundant parallel architecture according to claim 1 or 2, characterized in that the microcontroller system control the first, second, ..., nth and (n+1)-m module DC/DC is configured to control the voltage level of the primary and backup network, determine the voltage level of the primary and backup network within the acceptable range of voltages, generation of control actions on the inverters of the first and second channel transformation to stabilize the voltage at the load when the voltage level of the primary or backup network within the acceptable range of voltages, protection of the first and second channel conversion power equipment inverter (filter-inverter-transformer-rectifier) against overloads and short circuits, translation (at rated load) one of the modules DC/DC in "Hot standby", uniform distribution of the dynamically variable load between parallel modules DC/DC automatic commissioning of the backup module DC/DC enlarged and load in excess of par or at a single failure (failure of one module DC/DC), informing the external control system of the denial of the Converter.



 

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