摘要
无位置传感器起动运行技术一直是开关磁阻电机研究的热点与难点。对开关磁阻电机初始定位后的起动运行阶段进行了研究,提出了一种基于导通相与非导通相电流斜率差值交点法的开关磁阻电机无位置传感器起动运行方法。该方法利用三相绕组的对称性,在导通相与非导通相电流斜率差值交点处确定即将导通相的0°位置,并在该位置完成换向;优化了起动运行的导通区间,起动效率较高,实现了与高速无位置传感器算法的平滑过渡,进而实现全速范围内的无位置传感器运行。仿真及实验结果验证了理论分析的正确性与有效性。
Sensorless starting method has always been an essential concern for switched reluctance motor（SRM）. This paper presents a new starting method based on the current slope differences of conducting phase and non-conducting phase. Given the symmetrical characteristic of three-phase winding, incoming phase reaches its 0 degree at the cross-point of the current slope differences of conducting phase and non-conducting phase, the commutation will be completed simultaneously. Conducting interval has been optimized and starting efficiency has been improved.Furthermore, this starting method is suitable for smooth transition to high-speed sensorless method, so that the sensorless operation among wide-speed-range can be realized.Simulation and experimental results are presented to verify the proposed method.
出处
《电工技术学报》
EI
CSCD
北大核心
2017年第19期11-20,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金项目(51277094)
南京航空航天大学基本科研业务费项目(NP2013304)资助
关键词
开关磁阻电机
无位置传感器
起动运行
电流斜率差值
全速范围
Switched reluctance motor
sensorless control
starting operation
current slope difference
wide-speed-range
