| 计及中性点电压的无刷直流电机无位置传感器控制 |
| |
| 引用本文： | 王华斌,刘和平,张毅,刘平.计及中性点电压的无刷直流电机无位置传感器控制[J].电工技术学报,2009,24(7). |
| |
| 作者姓名： | 王华斌 刘和平 张毅 刘平 |
| |
| 作者单位： | 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆,400030 |
| |
| 摘 要： | 为解决无刷直流电机在低速状态下检测转子位置的难题,提出了一种新颖的无位置传感器控制方法。该方法基于凸极式永磁无刷直流电机定子绕组电感是转子位置的函数这一特点,采用H_PWM-L_PWM调制方式,通过检测定子绕组中性点电压的波动情况,从而判断通电相的定子绕组自感是否相等,进而推断出反电动势的过零时刻。再借鉴反电动势法的特点,在过零点的基础上滞后30°电角度,即可确定换相时刻,理论推导证明了该方法的正确性。在实验过程中把该方案与霍尔传感器换相的方法进行了对比,验证了这种方法的有效性。
|
| 关 键 词： | 无刷直流电机 无传感器控制 中性点电压 自感 |
Sensorless BLDC Drive Allowing for Neutral Point Voltage |
| |
| Wang Huabin,Liu Heping,Zhang yi,Liu ping.Sensorless BLDC Drive Allowing for Neutral Point Voltage[J].Transactions of China Electrotechnical Society,2009,24(7). |
| |
| Authors: | Wang Huabin Liu Heping Zhang yi Liu ping |
| |
| Affiliation: | State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400030 China |
| |
| Abstract: | A novel sensorless scheme for brushless DC (BLDC) motor drives is presented in order to solve the problem that it is very difficult to detect the rotor position at low speeds. The method is based on the fact that stator windings inductance of salient BLDC is the function of the rotor position. When the H_PWM-L_PWM modulation mode is adopted for the salient BLDC motor, the fluctuation of neutral point voltage could be used to justify if the self inductance of energized stator windings is equal, from which th... |
| |
| Keywords: | Brushless DC motor sensorless control neutral point voltage self inductance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
