一种晶闸管可逆整流器的精准触发脉冲生成系统及方法
The system, composed of a six-bridge arm orientation angle generation module and an overcurrent protection logic module, accurately generates trigger pulses, solving the problem of pulse overlap in thyristor reversible rectifiers and ensuring precise control of the AC-AC frequency converter system.
CN116094495BActive Publication Date: 2026-07-17TIANJIN RES INST OF ELECTRIC SCI
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN RES INST OF ELECTRIC SCI
- Filing Date
- 2022-12-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In the existing technology, the trigger pulse generation of thyristor reversible rectifiers is not accurate enough, which leads to frequent pulse overlap and affects the precise control of AC-AC frequency conversion systems.
Method used
It employs a six-bridge arm orientation angle generation module, an overcurrent protection logic module, a single pulse generation module, and a dual pulse and forward/reverse group gating module. It generates trigger pulses by accurately measuring the grid phase and avoids pulse overlap by combining overcurrent protection logic.
Benefits of technology
It achieves precise generation of trigger pulses for thyristor reversible rectifiers, avoids pulse overlap problems, and ensures accurate control of AC-AC frequency converter systems.
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Figure CN116094495B_ABST
Abstract
本发明涉及一种晶闸管可逆整流器的精准触发脉冲生成系统及方法，通过外部锁相环节生成的电网频率信号和电源相位角闭环修正定向角，根据三相桥式整流触发规则将定向角依次间隔60度电角度生成六个桥臂定向角；通过电流实际值判断及外部限幅综合生成触发角限幅环节得到过流保护后的触发角；并由触发角与定向角的比较结果结合触发脉冲允许信号的综合判断，得出触发脉冲前沿，并进一步生成宽度可自由设定的宽脉冲列；充分考虑触发角快速变化以及正反组快速切换时，能够精确有效的生成触发脉冲，避免缺脉冲与重复脉冲现象的出现；综合各桥臂触发脉冲情况和正反组切换信号，生成有效的补脉冲，确保电流导通。
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