Title:
【発明の名称】インバータ電流制御装置
Document Type and Number:
Japanese Patent JP2653873
Kind Code:
B2
Abstract:
PURPOSE:To obtain a current controller for an inverter with high control accuracy inexpensively by converting a current command value to a current command of an analog basic sine wave, obtaining a deviation between the current command and a motor current in an analog manner, and digitalizing the current deviation in a microcomputer to accurately generate time data. CONSTITUTION:Calculating means 51 obtains U-phase, V-phase current command values IU, IV, and inputs them to PWM means 52, 53. The PWM means 52 generates a PWM pulse train PU, and the PWM means 53 generates a PWM pulse train PV. A low pass filter 56 removes V-phase side carrier frequency component to convert it to current commands IU, IV. A subtracter 23 obtains a difference between the current command IU and a motor current IU*, and an analog current amplifier 26 outputs a current deviation IU. Data generating means 55 obtains a current deviation, and generates time data Dt1, Dt2 in a conversion table.
Inventors:
MIZUNO KIMIMOTO
HIRABAYASHI TERUMI
TAKAHASHI TATSUJI
MURAMATSU HIROSHI
TAWADA MASANORI
KODERA TOSHUKI
HIRABAYASHI TERUMI
TAKAHASHI TATSUJI
MURAMATSU HIROSHI
TAWADA MASANORI
KODERA TOSHUKI
Application Number:
JP8803589A
Publication Date:
September 17, 1997
Filing Date:
April 10, 1989
Export Citation:
Assignee:
MITSUBISHI DENKI KK
International Classes:
H02M7/48; H02P7/00; H02P21/00; H02P23/07; H02P23/16; H02P23/22; H02P27/06; H02P27/08; H03K4/08; H03M1/00; (IPC1-7): H02P7/63; H02M7/48
Domestic Patent References:
| JP6288787A |
Attorney, Agent or Firm:
Mitsuteru Soga (4 outside)