宽输入范围下双向逆变器的控制策略  

Control Strategy of Bidirectional Inverter Under Wide Input Voltage Range

作　　者：蔡亮 姚志垒 CAI Liang;YAO Zhi-lei(Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]上海海事大学,物流工程学院,上海201306

出　　处：《电力电子技术》2023年第6期6-8,39,共4页Power Electronics

基　　金：国家自然科学基金(52077131);上海市浦江人才计划(20PJ1401500)。

摘　　要：针对传统双向逆变器体积大、成本高、开关管电压应力大的问题,提出了一种非隔离双向逆变器拓扑,该逆变器由升降压变换器和全桥逆变器组成。在任意模式下,都控制母线电容为非恒值电压,从而减小了开关管的电压应力。且中间母线电容可采用薄膜电容代替传统的电解电容,提高了功率密度和可靠性。最后,搭建了一个500 W双向逆变器的仿真电路和实验样机,通过仿真和实验表明,系统可在35~60 V较宽范围的输入电压下实现电池充放电功能。A transformer-less bidirectional inverter is presented to solve the problem of large size,high cost and high voltage stress of power devices in traditional bidirectional inverters.The inverter consists of a Buck/Boost converter and a full-bridge inverter.In any mode,the bus capacitance is controlled to a non-constant voltage,so the voltage stress of the power device is reduced.In addition,film capacitors can be used for intermediate bus capacitors instead of traditional electrolytic capacitors which improves power density and reliability.Finally,a simulation circuit and experimental prototype of a 500 W bidirectional inverter are built.Simulation and experiments show that the system can realize battery charging and discharging functions under a wide input voltage range of 35~60 V.

关 键 词：双向逆变器 非隔离 升降压变换器 

分 类 号：TM464[电气工程—电器]