J.C. Patents
Parallel control method and system for single-phase inverters and inverter
A parallel control method and a parallel control system for single-phase inverters and an inverter. Acquiring an output voltage and an output current of each of the single-phase inverters; transforming a voltage and a current in static abc coordinates into dq coordinates by reconstruction and coordinate transformation so as to realize decoupling of the voltage and the current; transforming an output voltage command value of a current loop in dq coordinates into abc coordinates by coordinate transformation; and modulating and generating modulation waves according to an output voltage command value in abc coordinates to control a switching of a power device. In the present application, a plurality of single-phase inverters are controlled to be connected in parallel and are simultaneously started to work, after one of the single-phase inverters is faulted, any other single-phase inverter automatically bears the load of the faulted single-phase inverter, so that a problem of restarting delay of a mutual backup module is solved, a real uninterrupted power supply of the power supply is realized, high reliability is achieved, and influences to vehicle driving are avoided.
CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
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Meiyun Junbo Xuebin Shen Qingwen Congcong Wendong Yongjie Bo Zhenzong Yunlong Yufei
Li Zhao Xing Wang Sun Wang Ji Mao Zhang Zhu Liu Chen