Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1983-09-21
1984-09-18
Smith, Jr., David
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, H02K 2902
Patent
active
044726660
ABSTRACT:
A brushless DC motor, in which power supplied to polyphase stator coils is controlled by drive transistors, has a DC-DC switching converter for producing an output voltage according to an on-time ratio of the switching semiconductor, a voltage controller for detecting a voltage drops across the drive transistors and for controlling the on-time ratio of the switching semiconductor so that the voltage drops across the drive transistors become a predetermined small value, a temperature detector for detecting a temperature of the drive transistors, and a current reviser for reducing the output currents of the drive transistors in each activated period so that the currents of the drive transistors are controlled in response to a command signal and an output of the temperature detector.
REFERENCES:
patent: 3896357 (1975-07-01), Tanikoshi
patent: 4023082 (1977-05-01), Tanikoshi
patent: 4039911 (1977-08-01), Tanikoshi
patent: 4051420 (1977-09-01), Tanikoshi
Akeda Takafumi
Gotou Makoto
Hosokawa Yoshiteru
Igarashi Yoshiaki
Matsushita Electric - Industrial Co., Ltd.
Smith Jr. David
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