Title:
【発明の名称】PWMコンバータの制御装置
Document Type and Number:
Japanese Patent JP3159993
Kind Code:
B2
Abstract:
A control apparatus for a PWM converter can easily reduce harmonic waves for each formation of electric cars without making a zero-phase detection tolerance of a reference signal severe. In the control apparatus, phase differences of converter units, an n-fold component of the carrier frequency component of a primary current is detected, phases are finely adjusted with respect to pre-designated phase differences such that the n-fold component is set at a desired value or more, and an error of detection precision of reference frequencies of the converters and a phase error caused by a difference between delays of ON/OFF-switching operations are corrected, so that a more ideal phase difference operation can be realized.
Inventors:
Noriaki Nakamoto
Application Number:
JP54138898A
Publication Date:
April 23, 2001
Filing Date:
March 31, 1997
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
B60L9/00; B60L9/24; B60L9/28; H02M5/45; H02M7/155; H02M7/17; (IPC1-7): B60L9/24; H02M7/155
Domestic Patent References:
| JP7274517A | ||||
| JP6351106A | ||||
| JP61244201A |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)