可升压自然软开关变流器  

A NATURAL SOFT-SWITCH POWER CONVERTER WITH ADJUSTABLE DC VOLTAGE

作　　者：吴卫民[1] 顾斌[1] 钱照明[1] 彭方正[1,2] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]MichiganStateUniversity

出　　处：《中国电机工程学报》2005年第12期62-66,共5页Proceedings of the CSEE

摘　　要：该文提出一种能应用于DC-AC、AC-DC-AC、AC-DC、和DC-DC电能变换的新型电能变化策略。采用该策略的变流器与对应的传统硬开关变流器相比,在直流储能环节的回路中增加一个辅助开关,通过适当的控制可实现:DC电压提升;辅助开关零电压零电流工作;传统变流器更多开关工作在零电压零电流状态。该文通过对一个新型两电平DC-AC三相逆变器的分析来详细阐述此类变流器的基本工作机理,并通过实验加以验证。This paper presents a novel type power converter and its control method for implementing DC-AC, AC-DC-AC, AC-DC, and DC-DC power conversion. Compared with the conventional power converter, an auxiliary switch is inserted between the DC link and the external circuit. With a proper control, the DC voltage can be boosted, the auxiliary switch works as a full soft-switch, and more switches of the conventional power converter transfer in the zero voltage switching (ZVS) or in the zero current switching (ZCS) state. To describe the operating principle and the control, this paper focuses on a two-level three-phase DC-AC inverter. Experimental results will be presented to demonstrate the new features.

关 键 词：开关变流器 升压 零电压零电流 辅助开关 AC-DC DC-DC 三相逆变器 电能变换 工作机理 流状态 传统 电平 

分 类 号：TN73[电子电信—电路与系统] TN624