绕线式电机新型节能起动拓扑结构的仿真研究  

Simulation of winding motor with new topology in energy-saving starting

作　　者：何春晗[1] 任开春[1] 张兴起[1] 

机构地区：[1]重庆通信学院军事电力工程系,重庆400035

出　　处：《机电工程》2010年第9期108-111,共4页Journal of Mechanical & Electrical Engineering

摘　　要：为了实现电机启动中能耗的再利用,分析了电机机械特性和转矩与转差率关系,推导出电机保持最大恒转矩起动时转子上电流变化规律。采用不可控整流电路与可控电流源相结合,取代电机启动时转子上串接的电阻,避免了大量电能以热能形式在电阻上损耗掉。可控电流源通过Boost电路实现;在启动过程中,可以将Boost电路吸收的能量通过逆变输出至电网或其他交流负载,从而达到节能的目的。仿真结果表明,电机具有最优的起动效果。Aiming at realizing the re-utilization of energy in the motor starting,the mechanical properties and electrical torque with slip were analyzed,the current variation was derived when the motor starting with constant torque and keeping the maximum.Using non-controlled rectifier circuit combined with the controlled current source to replace the resistance on rotor when the motor starting,a lot of energy loss on resistance with the form of heat was avoided.Controllable current source can be realized with Boost circuit.During the startup,the energy that Boost circuit absorbed can be sent to the power grid through the inverter,the energy saving was achieved.The simulation results indicate that the motor starting has the best effect.

关 键 词：恒转矩 转差率 可控电流源 节能 BOOST 

分 类 号：TH113[机械工程—机械设计及理论]