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Abstract

A rectifier electric drive has a synchronous machine shaft position transmitter (2) which is electrically connected to an output of a permanent storage (10). The output bus of this storage (10) is connected to control inputs (11) of code-to-pulse duration converters (12) whose number is equal to the number of windings of the synchronous machine (1). The outputs of the code-to-pulse duration converter (12) are connected to pulse duration master inputs (17) of respective switching devices (18) having their pulse polarity master inputs (26) connected to respective outputs of the permanent storage (10). The outputs of the switching device (18) are connected to the windings of the synchronous machine (1). Also provided is a voltage to pulse repetition period conversion unit (34) having its input (35) connected to a voltage source (25) and also connected to the switching devices (18). The input (33) of the voltage to pulse repetition period conversion unit is also connected to the output of the master oscillator ( 32) and connected to an input (31) of a controlled frequency divider (28), and its output is connected to triggering inputs (36) of the code-to-pulse duration converters (12). The control input (29) of the frequency divider (28) receives a control signal modulus code and the output of the divider (28) is connected to pulse frequency master inputs (30) of the converters (12).

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