A high-voltage inverter multi-IGBT clock synchronous driving method and system

Abstract

The invention discloses a multi-IGBT clock synchronous driving method and system for a high-voltage frequency converter, and relates to the technical field of electronic device control. The method comprises the steps that a main control end generates a main clock signal, a control command or control data and a driving pulse, performs Manchester encoding to form a serial signal carrying the main clock signal, and sends the serial signal to a receiving end to be controlled, wherein the control command or the control data carries an address code of the receiving end; the receiving end performs Manchester decoding, and extracts the main clock signal, the control command or control data and the driving pulse; the main clock signal is taken as a synchronous clock signal, a synchronous driving signal is generated and transmitted to an IGBT driver. According to the invention, the Manchester codes carry the main clock signal, and the synchronous clock can be recovered through the decoding of the receiving end, so the method and system achieve the synchronous driving of the IGBTs, and have the good anti-jamming capability.

Description

technical field [0001] The invention relates to the technical field of electronic device control, in particular to a multi-IGBT clock synchronous drive method and system for a high-voltage frequency converter. Background technique [0002] In large-scale industrial systems, the application of high-voltage frequency converters is becoming more and more extensive, and the capacity is getting larger and larger. Therefore, the performance requirements for high-voltage frequency converters are also getting higher and higher. There are multiple IGBTs (Insulated Gate Bipolar Transistor, Insulated Gate Bipolar Transistor) inside the high-voltage inverter, and the use of optical fibers to transmit the driving pulse signals of the IGBTs can reduce the difficulty of wiring. [0003] The multiple IGBTs inside the high-voltage inverter are arranged in groups, each group has multiple IGBTs, and the driving signals of each IGBT are different. In order to reduce the number of optical fibers...

AI Technical Summary

Problems solved by technology

This transmission method is simple to implement, but there may be abnormal continuous 0 or continuous 1 phenomena in the decoded data at the group end, or because the local clocks of each group are not synchronized, the decoded IGBT drive pulses are not synchronized, resulting in system failure. Some functional indicators can not achieve the expected results

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