Title:
MARGINAL ANGLE CONTROLLER FOR CONVERTER
Document Type and Number:
Japanese Patent JPS5851778
Kind Code:
A
Abstract:
PURPOSE:To perform the operation of a stable power inverter by carrying out the calculation of a commutation reactance for automatically correcting the variation in the commutation reactance in a converter varying upon variation of frequency as the input parameter of a marginal angle control calculating circuit. CONSTITUTION:A frequency deviation detector 40 inputs the frequency (f) of an AC system, outputs a deviation DELTAf from the tuning frequency set by an AC filter, which is inputted to a commutation reactance calculator 41. The varied component DELTAXC of the reactance due to the variation in the frequency is added to the commutation reactance XC of only a transformer, and is inputted to a multiplier 31. Since the varied component of the reactance due to the variation in the frequency is corrected in this manner, even if the frequency of the AC system is varied, the marginal commutation angle can be determined with the correct commutation reactance, thereby providing the stable operation of a power inverter.
Inventors:
MATSUMURA SUSUMU
HAYASHI SHIGEO
HAYASHI SHIGEO
Application Number:
JP14991081A
Publication Date:
March 26, 1983
Filing Date:
September 22, 1981
Export Citation:
Assignee:
KANSAI ELECTRIC POWER CO
MITSUBISHI ELECTRIC CORP
MITSUBISHI ELECTRIC CORP
International Classes:
H02M7/515; (IPC1-7): H02P13/20
Domestic Patent References:
| JPS51150027A | 1976-12-23 |
Attorney, Agent or Firm:
Masuo Oiwa