Roadway functional converter


(57) Abstract:

The Converter can be used in conversion devices good as utility power output voltage, modeling and computing devices. The purpose of the invention is to simplify, improve reliability and economic efficiency. The Converter consists of a high-frequency inverter with an output transformer, the secondary windings of which are bitwise included in the diagonal mnogomodovykh cells, and the cells are connected in series between itself and the load. The synthesis of the shape of the output voltage is stepped approximation, and management mnogomodovyj cells is based on the use of multi-valued symmetric notation. 3 Il.

The invention relates to the formation (synthesis) of the electrical signals described trigonometric, for example sinusoidal, multi-function to the synthesis of controlled discrete-largest DC and AC voltages, and can find application in automation, computing and Converter equipment.

Known prior art [1] consisting of inverter, the secondary winding, dial keys first intermediate energy conversion and representation of integers natural numbers using a symmetric multivalued code. This may be formed all the voltage levels required to generate a given periodic function, approximated by a stepped shape of the curve.

The disadvantage of analogue is the increased number of secondary windings, keys AC high voltage on these keys and the ability to build only digit devices. Noted deficiencies reduce manufacturability (a large number of windings), reliability (increased number of keys and the increased strain on them) and increase the cost of the device.

Closest to the proposed device is functional Converter [2] in which to implement mnogogrannosti used sequential power discharge and load. All of the major disadvantages of the analog characteristic of the prototype.

The purpose of the invention is the simplification of the device, increasing its maintainability and reliability, reduce the cost.

This is achieved by the fact that the secondary (bit) winding of the transformer of each category are included in the diagonal mnogorazovogo frequency Converter made on the keys AC. Mnogochislenost functional preobrazovala is edstaven roadway functional three-digit Converter implementation patienoe number system with a symmetric base: 0; 1; 2. The Converter consists of an input high-frequency inverter (frequency 20 30 kHz), made for example, "zero" circuit, and a three-digit digital mnogorazovogo frequency Converter.

The inverter provides power transistors 1 and 1', the diodes 2, the primary winding 3 of the power transformer.

Mnogomodovoi digital frequency Converter consists of three groups of secondary windings 4-4', 5-5' and 6-6' and three cells petiluzkovych bridges AC 7, 8 and 9. The first bridge contains keys AC 10-14; second 15-19, etc. Patricia bridges are interconnected and load 20 consistently.

The control circuit consists of an oscillator 21, a frequency divider 22 and the pulse distributor 23. The power source 24.

The ratio of turns of the winding groups 4-4'; 5-5' and 6-6' between them is 1: 5:25, etc. for the selected patienoe notation.

In Fig. 2 shows the first discharge 7 (cell) mnogorazovogo digital frequency Converter that implements multi-valued number system with base number, big five. In Fig. 2 the primary winding 3; secondary winding 25 27; keys AC 29 36.

The ratio of turns of the windings 25, 26, 27 in each of R is carried out by the selected base number.

In Fig. 3 presents the experimental waveform of the output sinusoidal voltage, the synthesized three-digit, base number equal to seven bridge functional converters.

The scheme of Fig. 1 operates as follows.

Rectangular pulses of high frequency from the frequency divider 22 start power inverter 1-2-3. When the supply voltage from source 24 to the primary winding 3 are formed of rectangular voltage pulses. On the secondary winding 4-6 transformed voltage equal to: group 4-4' U; group 5-5' 5U; group 6-6' 25U each of the windings. When switching the keys in each of the bridges (discharge) voltage of the winding group can be transferred to the output mnogomodovoi cells (a-b) alternately in phase or out of phase, or in the amount or cell output can be shorted.

Thus, the output cell 7 can be formed voltage: 0, U and 2U; output cell 8 (c-d)-voltage 0, 5U, 10U, and the output of the cell 9(e-f) voltage 0, 25U and 50U. For example, in cell 8 with the closure of the keys 18 and 19 and is opened, all the other keys on the output (c-d) will be short circuited, and the voltage winding 5 and 5' will be isolated from the output. When the circuit only giving 5V; with the closure of the keys 15 and 19 receives a voltage of +10V, and with the closure of the keys 16 and 18, the voltage of 10V. A similar algorithm keys and other cells of the Converter.

Because cells between itself and the load are connected in series, by manipulating the magnitude and polarity of the voltage output of each cell can be formed on the load-any voltage level (K) from 0 to 62U both polarities (three digits), from 0 to 12U in two digits, and so on, according to the formula , where P is the base number (in our case P=5); n is the number of digits.

For example, you need to get on the load voltage +8V. To do this, from 10U to subtract 2U, this is achieved by the inclusion of the keys 10 and 14 in the cell 7 (voltage +2U) and keys 15 and 19 in the cell 8 voltage +10U). As the cells connected in opposite polarity, the load will be generated voltage +8U. For the formation voltage 7U you must enable keys 10 and 14, 17 and 18 (voltage 5U).

Control of the actuation keys of the digital frequency Converter (cells 7, 8 and 9) is produced from the pulse distributor 23 containing programmable chip EPROM.

The work of the cell 7 mnogorazovogo digital frequency Converter for lightstone.

The winding 25 U; winding 26 U; winding 27 2U.

On the basis of this structure can be implemented cells with different base number.

Using the winding 25 and the keys 29-32, you can implement the ternary notation (01), using the windings 25 and 26, and the keys 29 34 can be implemented patricnou the notation (0, 1, 2); using the windings 26 and 27, and the keys 31 to 36, you can implement the septenary number system(0, 1, 2, 3), using windings 25, 26 and 27, and the keys 29 36, it is possible to implement dewatering notation(0, 1, 2, 3, 4).

Connecting additional winding and a pair of keys, you can increase the base number of the cell and the next.

Connection sequentially such cells it is possible to realize a multi-bit structure.

From analysis of cells can be seen that in each cell for any algorithm at the same time, no more than two keys. The maximum voltage is applied at the keys and it does not exceed the total voltage in the group of windings for one cell, as in the prototype, this voltage is equal to twice the group tension.

This, by the way, and always different "zero" scheme from the pavement. It is evident from Fig. 1 shows that when implementing patienoe system schnoy number systems number of keys is reduced by one.

In the prototype the number of windings (l) in each category is determined by the formula l= p-1, and in the proposed device for patienoe notation for septenary for dewatering l9=p/3. This fact significantly simplifies the manufacturing technology of the transformer and reduces its cost.

On the basis of the above structures can be synthesized and multiphase functional transducers.

Roadway functional Converter comprising a master oscillator, frequency divider, pulse distributor, power supply, power transistors, shunt diodes, a transformer, a load element and a multi-bit frequency Converter, each category of which consists of five keys, the control inputs of which are connected to respective outputs of the pulse distributor, the output of the master oscillator is connected to the input of the frequency divider, the outputs of which are connected respectively to the input of the pulse distributor and the basic conclusions of the power transistors, the emitter conclusions of which is connected to the anode conclusions bypass diodes and the first output of the power source, the second terminal of which is connected with the average output of the primary winding of the transformer, at interaudi diodes, characterized in that each digit of a multi-bit frequency Converter is made in the form of a bridge circuit, four shoulder which is formed respectively by the four keys at the conclusions of each section of the secondary winding of the transformer included in the corresponding diagonal of the bridge circuit, the average output of each section of the secondary winding of the transformer corresponding to the bridge circuit through the fifth key is connected with a free top of the bridge circuit, the output and opposite to it the top of the bridge circuits are connected with the conclusions of the load element.


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