This research utilizes a hybrid technology through resonant line-level control phase-shifted full-bridge (HR-LLC-PSFB) dc–dc converter. In this research, a line level control (LLC) auxiliary circuit is used to achieve zero-current soft-switching turned-off operation of a controlled switch. The zero-voltage soft-switching turned-on operation is achieved by using the transformers’ magnetic branch energy and the energy reflected by the output filter inductor. The effective turn’s ratio of the isolating transformers is used to reduce the inverter circuit’s voltage stresses. The effect of voltage overshoots and freewheeling circulating current in rectifying branches is improved by implementing an energy recovery circuit with an output filter. A closed loop coordination proportional integral derivative (PID) controller is proposed to generate the pulse width modulation (PWM) control signal to transmit smooth power by controlling output voltage and current values. The droop constant current charging (CCC) and reduced constant current charging (RCCC) technique is proposed for the charging process. Simulations performed in MATLAB and results substantiate the proposed work superiority in comparison to other topologies.

中文翻译：

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高功率密度混合动力汽车充电机优化控制

本研究通过谐振线路电平控制相移全桥 (HR-LLC-PSFB) DC-DC 转换器利用混合技术。在本研究中，采用线路电平控制（LLC）辅助电路来实现受控开关的零电流软开关关断操作。利用变压器磁支路能量和输出滤波电感反射的能量实现零电压软开关开通操作。隔离变压器的有效匝数比用于降低逆变器电路的电压应力。通过采用带有输出滤波器的能量回收电路，改善了整流支路中的电压过冲和续流环流的影响。提出了一种闭环协调比例积分微分（PID）控制器来生成脉宽调制（PWM）控制信号，通过控制输出电压和电流值来传输平滑功率。针对充电过程，提出了下垂恒流充电（CCC）和减少恒流充电（RCCC）技术。在 MATLAB 中进行的仿真和结果证实了与其他拓扑相比所提出的工作优越性。