四象限软开关悬浮斩波器研究  

Research on Four-quadrant Soft-switching Maglev Chopper

作　　者：夏猛[1] 徐俊起 龙文波 郭育华[1] 

机构地区：[1]西南交通大学,磁浮技术与磁浮列车教育部重点实验室,四川成都610031 [2]上海磁浮交通发展有限公司,上海201203 [3]北京动车客车段,北京100064

出　　处：《电力电子技术》2011年第4期98-99,共2页Power Electronics

摘　　要：传统的H桥悬浮斩波器开关损耗高、效率低、发热量较大,并且存在较严重的电磁干扰。为改善传统悬浮斩波器开关管的工作状态,将软开关应用到四象限悬浮斩波器中,使开关管发热较低,进而能够稳定工作。介绍了一种零电压转换四象限软开关悬浮斩波器,通过谐振电路的作用使主开关管工作在零电压导通状态。试验表明,采用软开关技术的悬浮斩波器的其主开关管导通损耗、温升等均小于传统悬浮斩波器。The traditional H-bridge maglev chopper has the drawbacks of large switching losses,low efficiency,high heat and heavy EMI.In order to improve the working state of the switcher,soft-switching method is applied into the traditional maglev chopper,which makes the switcher working in a steady state.This paper introduces a zero-voltage-transition four-quadrant soft-switching maglev chopper.The main switcher can work in a zero-voltage open-state under the function of resonant circuit.The test shows that the open switching losses,temperature rise of soft-switching maglev chopper are lower than the traditional maglev chopper.

关 键 词：斩波器 磁悬浮 零电压转换 四象限软开关 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]