Title:
【発明の名称】多相交流より直流を得る電圧形コンバータの制御装置
Document Type and Number:
Japanese Patent JP3065517
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a controller for polyphase power supply voltage type converter in which the output voltage follows up a predetermined level and the power factor angle of power supply is matched with a predetermined value. SOLUTION: A DC controller 8 calculates an AC effective power command value P* and a reactive current command value calculating means 9 calculates an AC reactive power command value Q*. First and second means 1, 2 determine the difference sP, sq between the command values P*, Q* and effective power P and reactive power Q. A third means 3 calculates equivalent input vectors U p , U q being determined by circuit parameters, power supply voltage and power value. A fourth means 4 calculates control input vectors V0 Up , V0 Uq . Fifth and sixth means 5, 6 decide the polarity of V0 Up -U p , V0 Uq -U q and the control difference sP, sq . Based on decision results, a seventh means 7 selects a switching vector (u) and turns the semiconductor switch 12 in a polyphase voltage type converter on/off.
Inventors:
Chen Yifeng
Atsushi Fujikawa
Hirokazu Kobayashi
Atsushi Fujikawa
Hirokazu Kobayashi
Application Number:
JP26980495A
Publication Date:
July 17, 2000
Filing Date:
October 18, 1995
Export Citation:
Assignee:
Toyo Denki Manufacturing Co., Ltd.
International Classes:
H02M7/219; H02M7/12; H02M7/48; H02M7/797; H02P21/00; H02P21/05; H02P21/22; H02P23/04; H02P23/26; H02P27/04; H02P27/08; (IPC1-7): H02M7/219; H02M7/12
Domestic Patent References:
| JP8251921A | ||||
| JP819261A | ||||
| JP8214552A |
Attorney, Agent or Firm:
Shunichiro Nagasawa (1 person outside)