ANPC全小回路调制策略调制波极性切换方法
By detecting changes in the polarity of the modulation wave and adjusting the state of the switching transistor, the switching of the modulation wave polarity in the ANPC full small loop modulation strategy is realized, which solves the problems of complex modulation wave polarity switching and safety risks, and ensures zero voltage output and safe commutation.
CN116488496BActive Publication Date: 2026-07-17HIWING TECH ACAD OF CASIC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HIWING TECH ACAD OF CASIC
- Filing Date
- 2022-01-14
- Publication Date
- 2026-07-17
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Figure CN116488496B_ABST
Abstract
本发明提供了一种ANPC全小回路调制策略调制波极性切换方法，包括：检测到当前开关周期调制波极性与上一开关周期调制波极性不同时，判断当前开关周期调制波极性是否为负，若是，则在(0,1 / 5t]开关周期内导通T2开关管，关闭T1、T3、T4、T5和T6开关管；在(1 / 5t,2 / 5t]开关周期内导通T2和T5开关管，关闭T1、T3、T4和T6开关管；在(2 / 5t,3 / 5t]开关周期内导通T2、T3、T5和T6开关管，关闭T1和T4开关管；在(3 / 5t,4 / 5t]开关周期内导通T3和T6开关管，关闭T1、T2、T4和T5开关管；在(4 / 5t,t]开关周期内导通T3开关管，关闭T1、T2、T4、T5和T6开关管；若否，则按照上述逆序切换开关状态。应用本发明的技术方案，能够解决现有技术中ANPC全小回路调制策略操作复杂，换流存在一定的安全风险的技术问题。
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