Title:
インバータ装置および交流電動機の減速方法
Document Type and Number:
Japanese Patent JP4756478
Kind Code:
B2
Abstract:
There is provided an inverter capable of reducing a speed in a short period of time without generating an overcurrent even in a case of an alternating current motor which is easy to be saturated magnetically. A frequency of driving a motor is calculated by using a detecting value constituted by passing a direct current bus line voltage through a first filter portion, a voltage command is corrected by using a detecting value passing through a second filter portion, by making a time constant of the second filter portion larger than a time constant of the first filter portion in reducing a speed, the motor is brought into an overexcited state and loss is brought about in the motor.
Inventors:
Hideaki Iura
Kazuhiko Hiramatsu
Kazuhiko Hiramatsu
Application Number:
JP2006528849A
Publication Date:
August 24, 2011
Filing Date:
July 01, 2005
Export Citation:
Assignee:
Yaskawa Electric Co., Ltd.
International Classes:
H02P3/18
Domestic Patent References:
| JPH08107699A | 1996-04-23 | |||
| JP2005295614A | 2005-10-20 |