两级升压式高增益三相逆变器  

Two-stage Boosting Three-phase Inverter with High Voltage Gain

作　　者：程孟晗 程真何 商少波 秦晓丹 李诗华 Cheng Menghan;Cheng Zhenhe;Shang Shaobo;Qin Xiaodan;Li Shihua(College of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221008, China;State Grid Jiangsu Electric Power Co., Ltd. Maintenance Branch, Nanjing Jiangsu 211106, China)

机构地区：[1]中国矿业大学电气与动力工程学院,江苏徐州221008 [2]国网江苏省电力有限公司检修分公司,江苏南京211106

出　　处：《电气自动化》2019年第4期86-88,103,共4页Electrical Automation

摘　　要：传统Z源逆变器及其衍生拓扑只能通过控制直通时间实现升压,针对这一特点提出了一种两级升压式高增益三相逆变器,即在结构上采取了两级升压设计,在特定调制方式下合理分配非直通时间可以实现升压。分析了电路工作原理,介绍了PWM控制策略,利用仿真软件及试验数据验证了理论分析的准确性,并证明新型拓扑更适用于需要较大DC/AC电压增益的场合。Traditional Z-source inverter and its derivative topology could only be boosted by controlling its shoot-through time. In view of the above-mentioned characteristic, this paper proposed a two-stage boosting three-phase inverter of high voltage gain, its structure being designed with a two-stage boosting so that its non-shoot-through time might be distributed reasonably in a specific modulation mode to realize boosting. The working principle of the circuit was analyzed, PWM control strategy was introduced, and the correctness of theoretical analysis was verified through simulation software and test data. Furthermore, the new type of topology was proved to be more suitable when a considerable high DC/AC voltage gain was required.

关 键 词：两级升压 阻抗网络 高电压增益 非直通升压 调制策略 

分 类 号：TM464[电气工程—电器]