摘要
提出了一种新型的逆变器结构,将传统的三相桥逆变器中与功率开关管反并联安装的续流二极管独立开,通过采用磁感应式电流传感器,实现无刷直流电机的非换相相电流的采样,从而使得电磁转矩的精确控制成为可能。理论分析及实验结果证明了该结构的可行性及有效性。
A novel inverter structure is proposed.Freewheeling diodes are isolated with power switches in this topology,which are anti-parallel connected with the power switches in traditional three phase bridgeinverter.By adopting the mag-netic induction current sensor,the non-commutation phase current of brush-less DC motor（BLDCM）can be sampled with this inverter structure,and this makes it possible to realize the accurate control of electromagnetic torque.The theoretical analysis and experimental results both testify the feasibility and effectiveness of the proposed inverter structure.
出处
《电力电子技术》
CSCD
北大核心
2010年第4期19-20,71,共3页
Power Electronics
关键词
逆变器
无刷直流电机
非换相相电流
电磁转矩控制
inverter
brushless DC motor
non-commutation phase current
electromagnetic torque control
