Regulating and controlling method and logic of self-adaption commutation integration of high frequency chain matrix inverter

Abstract

The invention discloses a regulating and controlling method and logic of self-adaption commutation integration of a high frequency chain matrix inverter, belonging to the regulating and controlling technology of power electronic power convertor. The invention is composed of a PWM information generating link (1), a self-adaption safe commutation integration logic processing circuit (2) and a controlled object high frequency chain matrix inverter (3), wherein PWM information which is produced by the PWM information generating link for classic inverter sinusoidal output is processed with the self-adaption safe commutation integration method and logic to control a high frequency chain circuit into a common voltage inverter or current inverter, thus obtaining a driving control signal used for the high frequency chain matrix inverter, and realizing energy double flow and four-quadrant operation. The invention has the advantages that the system has explicit working state and low regulation complexity, and the principle is easy to realize; the safe commutation of the system can be realized without commutation current detection and assistant circuit self-adaption used by traditional regulation and control. Thus the invention has wide application prospect in the fields of new energy power generation, motor speed regulation and the like.

Description

technical field [0001] The invention relates to a power converter modulation control method and logic, in particular to a high-frequency link matrix converter bidirectional switch self-adaptive safe commutation integrated control method and logic, belonging to the field of power electronic power converter modulation and control. Background technique [0002] An inverter is a topological device that converts DC power into AC power. The high-frequency link inverter uses a high-frequency transformer instead of a power frequency transformer to overcome the shortcomings of traditional transformer isolation applications. [0003] The conversion process of the high-frequency chain matrix inverter has three power characteristics of DC / HFAC / LFAC, among which, HFAC: high-frequency AC, LFAC: low-frequency AC. It can be seen that there is a DC / AC or DC / AC inverter link in this type of inverter, which is located on the primary side of the transformer, and it can also be seen that there ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the complex modulation and control method of the known high-frequency chain matrix converter, which cannot simply and effectively solve the problem of safe commutation of bidirectional switches, and needs auxiliary commutation detection, clamping and absorption circuits for safe operation. In order to solve the disadvantages, an integrated control method and logic that can realize the self-adaptive safe commutation of the high-frequency chain matrix converter simply and reliably

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