Title:
BEATLESS CONTROLLER
Document Type and Number:
Japanese Patent JP3229216
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to suppress torque ripples when the output frequency of an unverter is close to the double frequency of power supply, by adding up a compensation value and an inverter phase angle reference value to obtain an inverter phase angle, and controlling the output voltage of the inverter according to that inverter phase angle.
SOLUTION: A uctuation calculator 16 is fed with direct-current link voltages Vdc detected by a voltage detector 8, and calculates the amount of fluctuation in flux angle frequency (U o, a motor rotation frequency fr, a secondary magnetic flux mean value $ 2", and the mean value of torque current iq", and calculates the amount of compensation A 8 i. An adder 28 adds up the amount of compensation A B i and an unverter phase angle reference value Q i", and outputs an inverter phase angle Q il A multiplier 27 multiplies an inverter frequency reference fi" by 2 yc, and an inverter phase reference value Q i"is obtained by means of an integrator 18.
Inventors:
Kazuaki Yuki
Application Number:
JP23677896A
Publication Date:
November 19, 2001
Filing Date:
September 06, 1996
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H02M7/48; H02P21/00; H02P21/05; H02P21/14; H02P21/18; H02P21/20; H02P21/22; H02P21/24; H02P23/04; H02P23/07; H02P23/08; H02P23/14; H02P27/04; H02P27/06; (IPC1-7): H02P21/00; H02M7/48
Domestic Patent References:
| JP5752383A | ||||
| JP458777A | ||||
| JP746918B2 | ||||
| JP6148356B2 |
Other References:
電機学会論文誌Ｄ，第１０９巻，第５号，１９８９，中村他「コンバータ・インバータシステムにおけるビート現象の抑制法」ｐ．３６３−３６９
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)