公开(公告)号：US20150022128A1

公开(公告)日：2015-01-22

申请号：US14327048

申请日：2014-07-09

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Michele Berto BOSCOLO ,  Federico MAGNI ,  Paolo PASCALE ,  Ezio GALBIATI

IPC: H02P6/00

CPC classification number: H02P6/002 ,  H02P6/085 ,  H02P6/182 ,  H02P6/28 ,  H02P6/34

Abstract: A method of driving a permanent magnet synchronous electric motor includes sensing or estimating a back electromotive force induced in at least a winding of the motor by the rotation of a rotor of the motor; and reading, from a memory, values of a first voltage waveform having a phase angle with respect to the back electromotive force. The method also includes generating a driving voltage corresponding to the sum of values of a control voltage, obtained as product of the values of the first voltage waveform by a first coefficient determined as a function of a desired value of motor torque, and values of a cancelation voltage of the back electromotive force. The method also includes applying the driving voltage at the motor winding.

Abstract translation: 驱动永久磁铁同步电动机的方法包括通过电动机的转子的旋转感测或估计在电动机的至少一个绕组中感应的反电动势; 以及从存储器读取具有相对于所述反电动势的相位角的第一电压波形的值。 该方法还包括产生与作为第一电压波形的值的乘积的控制电压的值的和相对应的驱动电压，该第一系数作为电动机转矩的期望值确定的第一系数，以及 背电动势的取消电压。 该方法还包括在电动机绕组处施加驱动电压。