The invention provides a single-stage power conversion circuit and an application device and a control method thereof, and the single-stage power conversion circuit is characterized in that a switching circuit is additionally arranged between a three-phase matrix conversion circuit and an AC port of the single-stage power conversion circuit; after the switching circuit is controlled, single-phase alternating current or three-phase alternating current accessed from an alternating current port can be transmitted to the three-phase matrix conversion circuit, so that the single-stage power conversion circuit can normally work under different working conditions of single-phase power and three-phase power, and multiplexing of single-phase and three-phase application occasions is realized. Normal work of a three-phase circuit and a single-phase circuit can be realized by controlling the working state of a switch in the switching circuit; in addition, by arranging an additional winding connected with the primary side of the transformer in series and a corresponding switch, matching of different input voltages and output voltages of single-phase and three-phase alternating currents can be achieved.
本申请提供一种单级功率变换电路及其应用装置和控制方法,该单级功率变换电路,在三相矩阵变换电路与该单级功率变换电路的交流端口之间增加切换电路,该切换电路在受控后能够将交流端口接入的单相交流电或者三相交流电传输至该三相矩阵变换电路,以使该单级功率变换电路能够在单相电和三相电不同工况下正常工作,实现对于单相和三相应用场合的复用;通过控制切换电路中开关的工作状态,可以实现三相与单相电路正常工作;另外,通过设置变压器原边串联连接的附加绕组及相应的开关,还可以实现单三相交流电不同输入电压与输出电压相匹配。
Single-stage power conversion circuit and application device and control method thereof
单级功率变换电路及其应用装置和控制方法
2023-05-23
Patent
Elektronische Ressource
Chinesisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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