双三相感应电机SVPWM的新型过调制策略  

A novel SVPWM over-modulation strategy for the dual three-phase induction motor

作　　者：周勤奋[1] 鲍宇[1] 耿乙文[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电测与仪表》2015年第10期82-86,共5页Electrical Measurement & Instrumentation

摘　　要：过调制策略能够提高逆变器输出电压范围和品质,从而提高电机输出转速范围和转矩特性。针对双三相感应电机空间矢量脉宽调制(SVPWM)算法过调制区域有限,分区实现复杂,内存占用率大等问题,提出一种新型过调制策略。该策略将整个过调制区域算法统一实现,不需要分区多控制角计算,同时使调制度与调制后控制比例参数成线性关系,不用查表及数据存储即可实现线性区到十二阶梯波的平滑过渡,使数字化实现更为简洁高效。通过仿真和实验验证了所提过调制策略的正确、可行性。The over-modulation strategy can improve the range and quality of the inverter output voltage so that the output speed range and torque characteristics of the motor can be increased.The over-modulation region of the space vector pulse width modulation （ SVPWM） algorithm in the dual three-phase induction motor is limited, the process of the algorithm achievement in different areas is complex and the memory utilization rate is large.For the series of prob-lems, a novel over-modulation strategy was proposed, which implemented the algorithm in the whole over-modulation region without multi-control angle calculation in different areas.At the same time, the strategy realized a linear rela-tionship between the modulation degree and the ratio control parameters after modulation and the smooth transition from the linear region to the twelve-step wave without reading the meter or storing the data.Thus, the digital realiza-tion would be more simple and efficient.Simulation and experiments verified the correctness and feasibility of the strategy.

关 键 词：双三相感应电机 SVPWM 过调制 线性变化 十二阶梯波 

分 类 号：TM93[电气工程—电力电子与电力传动]