Title:
他励式電力変換器制御装置、およびその制御方法
Document Type and Number:
Japanese Patent JP7436418
Kind Code:
B2
Abstract:
To provide a small and inexpensive line commutation type power converter control device which prevents a consecutive commutation failure in abnormality and raises a direct current power quickly, and a control method for the same.SOLUTION: A line commutation type power converter control device includes a power converter, a gate pulse generator for controlling the power converter, a converter control device for controlling the gate pulse generator, and a converter protection device for protecting the converter control device. The converter control device has a constant margin angle control circuit which performs constant margin angle control. The constant margin angle control circuit 103 comprises a harmonic detection circuit 201 for detecting harmonic waves, an AC voltage detection circuit 202 for detecting an AC voltage, a control lead angle limiter circuit 203 for limiting a control lead angle with respective signals of the AC voltage detection circuit and a direct current, a β→α conversion circuit 204 for converting an output signal of the control lead angle limiter circuit into a control delay angle, a compensation control circuit 220 for outputting a fixed value by detecting a single shot commutation failure, and a compensation circuit 205 for compensating an output signal of the β→α conversion circuit with respective signals of the harmonic detection circuit and the compensation control circuit.SELECTED DRAWING: Figure 3
Inventors:
Jun Okamoto
Naoki Kawamura
Ikuta Mekaku
Naoki Kawamura
Ikuta Mekaku
Application Number:
JP2021084318A
Publication Date:
February 21, 2024
Filing Date:
May 19, 2021
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H02M7/48
Domestic Patent References:
| JP10164757A | ||||
| JP8237869A | ||||
| JP10023763A | ||||
| JP8308233A | ||||
| JP11341685A |
Attorney, Agent or Firm:
Patent Attorney Corporation Isono International Patent and Trademark Office