斩波串级调速系统电机机械特性曲线的研究  

Research on Mechanical Characteristics of AC Motor with Cascade DC Chopper Speed Control System

作　　者：王归新[1] 裴合伟[1] 晓琼 鲜万春[1] 

机构地区：[1]三峡大学电气与新能源学院/新能源研究院,湖北宜昌443002 [2]中船重工海声科技有限公司,湖北宜昌443000

出　　处：《电气传动》2012年第4期3-6,共4页Electric Drive

摘　　要：绕线转子式交流电机转子回路串级调速系统具有很好的调速性能和节电效果,在中大功率领域应用较多。基于对三相整流电路电源等效内阻抗对桥路整流输出的影响分析,将整流桥及其后续电路等效为电机转子回路的电阻,推导出在有串级调速系统下电机的机械特性,得出了影响电机机械特性的两方面因素,其中转子回路的等效阻抗对机械特性的影响相对于转子漏抗影响换相重叠角对机械特性的影响尤为严重的结论。仿真结果证实了理论推导的结论,并进行了实验验证。In high power application, wound AC motor rotor loop cascade control system has very good speed performance and energy-saving effect. Based on the analysis that the equivalent internal impedance of three-phase rectifier bridge influence rectifier output, rectifier bridge and follow-up circuit equivalent to the mo- tor rotor loop resistance,inferred to the mechanical characteristics in the cascade control system. Came to con- clusion that two influence factors for mechanical characteristics. The rotor loop equivalent impedance is more serious than rotor leakage reactance effect commutation overlap angle to mechanical characteristics influence. The simulation and the experiment verify the theory.

关 键 词：串级控制 节能 绕线异步电动机 整流桥 逆变器 

分 类 号：TM343[电气工程—电机]