The invention provides a single-stage three-port magnetic integration topology, a vehicle-mounted charger and a control method of the vehicle-mounted charger, in the single-stage three-port magnetic integration topology, an alternating current side conversion circuit adopts a matrix conversion structure on the basis of realizing voltage polarity conversion processing of the alternating current side of the single-stage three-port magnetic integration topology, so that the voltage polarity of the alternating current side of the single-stage three-port magnetic integration topology can be converted; the power factor correction circuit can replace an additional PFC rectification circuit in the prior art to realize a power factor correction function, so that the PFC rectification circuit, a corresponding PFC inductor and a large-capacitance electrolytic capacitor between the positive electrode and the negative electrode of a post-stage intermediate bus in the prior art can be omitted, devices are reduced, and the power density is improved; moreover, a single-stage conversion structure after the PFC rectifying circuit is omitted, and compared with the prior art, one-stage power conversion is reduced, so that the conversion efficiency can be improved, and a control scheme is simplified. Moreover, the high-voltage side is designed to be low in impedance, and the high-voltage side conversion circuit can be controlled to realize the voltage clamping of the transformer port, so that the port power decoupling is realized, and the control complexity is reduced.
本申请提供一种单级三端口磁集成拓扑、车载充电机及其控制方法,单级三端口磁集成拓扑中,交流侧变换电路在实现对于单级三端口磁集成拓扑交流侧的电压极性变换处理的基础之上,通过采用矩阵变换结构,能够代替现有技术中额外的PFC整流电路实现功率因数校正功能,进而可以省略现有技术中的PFC整流电路及相应的PFC电感和后级中间母线正负极之间的大容值电解电容,减少器件,提高功率密度;而且,省略了PFC整流电路后的单级变换结构,相比于现有技术减少了一级功率变换,进而可以提高变换效率,并简化控制方案。而且,其高压侧通过低阻抗设计,可以控制高压侧变换电路实现变压器端口电压钳位,从而实现端口功率解耦,降低控制复杂度。
Single-stage three-port magnetic integration topology, vehicle-mounted charger and control method of vehicle-mounted charger
单级三端口磁集成拓扑、车载充电机及其控制方法
2023-05-23
Patent
Electronic Resource
Chinese
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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