发明名称 |
Electric motor controller |
摘要 |
The present invention provides a motor controller capable of driving a synchronous motor having no position sensor stably at high efficiency by carrying out simple control. In order to attain this purpose, a reactive current is obtained from a motor current and a rotation phase, an error voltage is obtained from the reactive current and the command value of the reactive current, thereby obtaining a motor applied voltage command value Va that is used to compensate for the V/f characteristic of the motor. Furthermore, the motor applied voltage command value Va is applied to an output command computing section, and computed with the rotation phase signal of a wave generation section, thereby obtaining a signal for PWM driving the switching devices of an inverter circuit. <IMAGE> |
申请公布号 |
EP1378990(A2) |
申请公布日期 |
2004.01.07 |
申请号 |
EP20030019270 |
申请日期 |
2002.02.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
NAKATA, HIDEKI;YOSHIOKA, KANEHARU;UEDA, MITSUO;ARAI, YASUHIRO |
分类号 |
H02P6/14;H02P27/06;H02P6/00;H02P6/06;H02P6/08;H02P6/18;H02P21/14 |
主分类号 |
H02P6/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|