交错并联LLC谐振的双向AC-DC变换器  

Bidirectional AC-DC converter with staggered parallel LLC resonance

作　　者：邓孝祥 黄治峰 Deng Xiaoxiang;Huang Zhifeng(School of Electrical&Control Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学电气与控制工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2023年第4期567-574,共8页Journal of Heilongjiang University of Science And Technology

摘　　要：针对当前平衡供电供需与解决再生能源间歇特性的问题,设计了一种以优化PWM调制策略控制图腾柱无桥PFC和交错并联双向LLC谐振电路的两级式双向AC-DC变换器。前级运用了优化PWM调制的控制策略,增强网侧电流对电网电压的跟踪能力,后级采用同步整流管驱动控制的交错并联LLC谐振变换器的方案,设计了变换器和环路补偿的参数,通过搭建实验仿真系统验证设计的可行性。结果表明,实现正向工作输入交流电220±10%V,输出直流电12 V,额定功率1 800 W;反向工作输入直流电12 V,输出交流电220 V,验证所设计的合理性与可行性。This paper is an attempt to address current problem of unbalancing power supply and demand and solving the intermittent characteristics of renewable energy.The study designs a two-stage bidirectional AC-DC converter to control the totem pole bridgeless PFC and the interleaved parallel bidirectional LLC resonant circuit with optimized PWM modulation strategy.The pre-stage adopts the control strategy of optimizing PWM modulation to enhance the tracking skill of the grid-side current to the grid voltage,and the latter stage adopts the scheme of interleaved parallel LLC resonant converter controlled driven by synchronous rectifier tube to design parameters of converter and loop compensation,and verifies the feasibility of this design by building an experimental simulation system.The results show that the positive working input AC current is 220 ±10% V,the output DC current is 12 V,and the rated power is 1 800 W;the reverse operation input DC current is 12 V and the output AC current is 220 V,as which verifies the rationality and feasibility of this paper.

关 键 词：双向AC-DC变换器 图腾柱无桥PFC 双向LLC谐振变换器 同步整流 

分 类 号：TM46[电气工程—电器]