| 摘要 |
A method for assisting in operating a PWM driven motor comprising for at least one phase of the PWM driven motor: generating a pulse width modulated phase voltage scheme according to a desired phase profile with a base scaling factor, by time multiplexing a first pulse and at least a further pulse within a pulse width modulation period of the phase the first pulse having a pulse width according to a first profile, for that rotor position, multiplied with a first scaling factor, the first profile being in phase with the desired phase profile, and the at least a further pulse having a pulse width corresponds with a further profile, for that rotor position, multiplied with a further scaling factor, the further profile being not in phase with the desired phase profile, whereby the first pulse and the at least one further pulse are positioned within the pulse width modulation period of the phase in at least partially non-overlapping way. |
| 主权项 |
1. A method for assisting in operating a PWM driven motor, the method comprising, during at least a certain period in time, the following steps for at least one phase of the brushless DC motor:
generating, for a given/measured rotor position, a pulse width modulated phase voltage scheme according to a desired phase profile with a base scaling factor, by time multiplexing a first pulse and at least a further pulse within a pulse width modulation period of the phase the first pulse having a pulse width according to a first profile, for that rotor position, multiplied with a first scaling factor, the first profile being in phase with the desired phase profile, and the at least a further pulse having a pulse width corresponds with a further profile, for that rotor position, multiplied with a further scaling factor, the further profile being not in phase with the desired phase profile, whereby the first pulse and the at least one further pulse are positioned within the pulse width modulation period of the phase in at least partially non-overlapping way, and whereby a combination between the multiplication of the first phase profile and the first scaling factor and the multiplication of the second phase profile and the second scaling factor corresponds with the multiplication of the desired phase profile with the base scaling factor. |
