| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and an arrangement for reducing effects of a voltage distortion on driving at a low speed in an electric driving unit. <P>SOLUTION: The method for reducing the effects of the voltage distortion includes the steps of receiving a first signal having a duty cycle in the range between the minimal achievable duty cycle and the maximal achievable duty cycle; generating a second duty cycle based on the minimal achievable duty cycle, when the duty cycle lies within the range of a distortion and in the range less than a first clipping value; generating the second duty cycle based on a minimum pulse width or a maximum pulse width which is closer, when the duty cycle lies within the range of the distortion and in the range between the first and the second clipping values; generating the second duty cycle based on the maximal achievable duty cycle, when the duty cycle lies within the range of the distortion and in the range larger than the second clipping value; and transmitting a second signal having the second duty cycle to the voltage-supply inverter. <P>COPYRIGHT: (C)2008,JPO&INPIT |
