储能驱动用双转子感应电机结构参数分析

Structure parameters analysis of dual-rotor induction motor applied for energy storage and driving

储能驱动用双转子感应电机可利用主动转子惯量进行储能,通过主动转子与从动转子之间的电磁耦合,完成主动转子机械能到从动转子机械能的直接传递,实现惯性负载的瞬时加速。本文介绍了双转子感应电机的特殊结构和运行原理,利用有限元法分析了这种新型电机的励磁极数、励磁线圈匝数、从动转子形式等关键结构参数与电机瞬时输出转矩、输出功率等性能之间的关系,为双转子感应电机的瞬态性能优化提供了理论依据。最后,基于分析结果设计了一台工程样机并进行了实验,验证了理论分析的正确性。

The dual-rotor induction motor(DRIM)applied for energy storage and driving can store energy by rotational inertia of its own master rotor.Based on the electromagnetic coupling between the two rotors,the energy stored in master rotor can be directly converted to the mechanical power of slave rotor and achieve instantaneous acceleration of load.In this paper,the special structure and operating principle of DRIM had been firstly introduced.Then the influence of key motor structure parameters such as excitation poles number,excitation coil turns and rotor construction type on the motor transient output torque and output power has also been investigated by finite element method,which can provide theoretical basis on the transient performance improvement of DRIM.Finally,according to the investigation results a prototype of DRIM is established and the tests to reveal the correctness of aforementioned investigation has also been conducted.