发明名称 |
APPARATUS FOR DRIVING BRUSHLESS DC MOTOR, COMPRESSOR OF REFRIGERATOR, AND METHOD OF DRIVING BRUSHLESS DC MOTOR |
摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a motor behavior from being changed when a waveform output means at a low speed time of a brushless DC motor is switched to a waveform output means at a high speed time or vice versa. <P>SOLUTION: A method of driving a brushless DC motor can suppress the change of the motor behavior when a waveform generating means to output a rectangular wave having a conducting angle of 120° to less than 180° or a waveform following to the rectangular wave, and a waveform generating means to output a rectangular wave/sine wave or a waveform following to the rectangular wave/sine wave having a conducting angle of 120° to less than 180° in a predetermined frequency and changing only a predetermined frequency with a constant duty are switched by an operating state. An influence affecting the non-cooling/dull cooling of a refrigerator and the lifetime reliability of a motor can be removed by suppressing noise generation/step-out or further reducing a peak current instantaneously. <P>COPYRIGHT: (C)2009,JPO&INPIT |
申请公布号 |
JP2009136149(A) |
申请公布日期 |
2009.06.18 |
申请号 |
JP20090067439 |
申请日期 |
2009.03.19 |
申请人 |
PANASONIC CORP |
发明人 |
OUCHIYAMA TOMONORI;HAMAOKA KOJI;TANAKA HIDENAO |
分类号 |
H02P6/18 |
主分类号 |
H02P6/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|