Title:
SYNCHRONOUS MACHINE SIMULATOR AND SYNCHRONOUS MACHINE SIMULATION METHOD
Document Type and Number:
Japanese Patent JP3428885
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To simulate the transition phenomenon of an electrical system by converting the real number instant value of a three-phase voltage which indicates the terminal voltage of a synchronous machine to the spiral vector of a complex number by finally calculating a positive-phase current or the like based on the conversion result, and by performing symmetrical coordinate conversion for obtaining the real number instantaneous value of a three-phase current.
SOLUTION: A real number instant value of a three-phase voltage that is the terminal voltage of a synchronous machine is A/D-converted by an A/D conversion circuit 21, and each phase voltage is converted into a plurality of spiral vectors of a complex number. Then, in a terminal voltage operation circuit 22, a symmetrical coordinate transformation is made, the positive phase, reverse phase, and zero-phase voltage of a symmetrical constituent are calculated. In a synchronous machine internal voltage operation circuit 23, the effective value of the internal voltage is obtained according to the phase angle of the synchronous machine. In a synchronous machine positive phase operation circuit 24, the positive-phase current of the synchronous machine is obtained according to the positive-phase voltage and the internal voltage of the synchronous machine. Awing to the operation of the positive phase, the reverse phase, a zero phase current, the active power, reactive power, and electrical system torque of the synchronous machine can be accurately simulated, without converting them to the amount of DC in a synchronous machine power-electrical system torque operation circuit 27.
Inventors:
Jianping
Application Number:
JP34038697A
Publication Date:
July 22, 2003
Filing Date:
December 10, 1997
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02J3/24; G06F19/00; H02J3/00; H02P9/00; H02P29/00; (IPC1-7): H02P9/00; G06F17/00; H02J3/24; H02P7/00
Domestic Patent References:
| JP63224693A | ||||
| JP6339300A | ||||
| JP2102000A |
Attorney, Agent or Firm:
Hiroaki Tazawa (1 person outside)