Title:
CONTROLLING DEVICE OF ROTARY ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP3467961
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an output torque accurately corresponding to a torque command even if temperature increases by calculating a torque current command from a magnetic flux which is obtained from a magnetic flux table based on a temperature detected by a temperature sensor and a torque command and controlling a rotary electric machine from the torque current command.
SOLUTION: A magnetic flux table 21 is a data table for storing the demagnetization characteristics of magnetic flux according to a temperature created, for example, by the data sheet of the permanent magnet of a PM motor 2, a motor stator temperature is detected by such a temperature sensor as a thermistor, and a temperature 6mg of the permanent magnet at a rotor side is supplied as a substitution for temperature information. As a result, a magnetic flux table 21 transmits the information on the magnetic flux Amg corresponding to a temperature tmg. A part 22 for setting the number of poles multiplies the magnetic flux Amg by the number of poles before outputting. A divider divides a torque command T* by the output of the part 22 for setting the number of poles. The output of a divider 23 becomes T*/Pn Amg and a torque current command becomes Ig, thus compensating the demagnetization characteristics due to temperature increase and obtaining a desired torque.
Inventors:
Tadashi Ashikaga
Masato Mori
Kazutoshi Nagayama
Masato Mori
Kazutoshi Nagayama
Application Number:
JP7702396A
Publication Date:
November 17, 2003
Filing Date:
March 29, 1996
Export Citation:
Assignee:
KABUSHIKI KAISHA MEIDENSHA
International Classes:
H02P21/00; H02P6/06; H02P6/08; H02P6/28; H02P21/05; H02P21/14; H02P21/16; H02P21/18; H02P21/22; H02P21/24; H02P21/28; H02P23/00; H02P23/04; H02P23/14; H02P27/04; H02P27/08; (IPC1-7): H02P21/00; H02P5/28; H02P6/08
Domestic Patent References:
| JP60197181A | ||||
| JP3222686A | ||||
| JP7123799A |
Attorney, Agent or Firm:
Toshiro Mitsuishi (2 outside)