【摘要】 分析了无刷直流电机(BLDCM)控制系统的换相特点;提出了采用四开关逆变器的结构。通过分析该逆变器系统的运行状态,给出了系统换相的逻辑实现图,并对系统进行了仿真和实验。结果表明,在特定的逻辑控制下,该逆变器可成功地获得无刷直流电机所需要的方波电流。更多还原

【Abstract】 In this paper,the switching characteristics of brushless dc motor system are analyzed,then a novel structure with four switches configuration is proposed.After analyzing the running mode of the new system,the logical circuit of the commutation is designed.To verify the validity of this system,the simulation is carried out.All the results showed that the rectangular stator currents can be acquired successfully.更多还原