具有最小开关损耗的磁链轨迹跟踪型变频器研究  

Research on Flux Linkage Locus Control With Minimum Switching Losses

作　　者：林平[1] 胡长生[1] 刘晨阳[1] 张仲超[1] 

机构地区：[1]浙江大学,杭州310027

出　　处：《电力电子技术》2001年第3期21-23,30,共4页Power Electronics

基　　金：浙江省科委专项基金!项目 (991110 434)

摘　　要：分析了磁链轨迹跟踪PWM控制的基本原理。从减少开关损耗出发 ,提出了通过对零矢量作用时刻的不同分配及调节各矢量作用顺序的三种调制方法 ,给出相应相电压波形 ,表明选择适当调制方法可以显著减少开关损耗。以单片机Intel8xC196MC为控制芯片研制了一台样机。实验结果验证了该方法的有效性和简单性。This paper presents the principle of PWM based on flux linkage locus control. For reducing switching losses, three kind of modulation methods are analyzed by adjusting the duty time of the zero vectors and the duty order of every vector. The phase voltage waveforms also indicate that the switching losses can be extremely reduced by choosing proper modulation method. A prototype based on the theories is designed. Experiment shows these schemes are available and simple.

关 键 词：变频器 脉宽调制 磁链轨迹跟踪 开关损耗 单片机 

分 类 号：TN773[电子电信—电路与系统]