Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2006-12-12
2006-12-12
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S434000
Reexamination Certificate
active
07148639
ABSTRACT:
A compensating circuit for compensating the terminal voltage on the armature in a sensorless type DC brushless motor apparatus is described. The driving circuit of the motor apparatus outputs a three-phase power, and each phase is connected with a compensating circuit. The compensating circuit has a reference voltage, a resistance device, a diode device, a differential amplifier and a processor. The two terminals of the resistance device are respectively connected to the reference voltage and the anode of the diode device. The cathode of the diode device is connected to an output of the three-phase power supply. The two input terminals of the differential amplifier are respectively connected to the two terminals of the resistance device. The processor accepts the signal output from the differential amplifier and then calculates and outputs a compensating voltage.
REFERENCES:
patent: 3906320 (1975-09-01), Doemen
patent: 4306181 (1981-12-01), Welburn
patent: 4562393 (1985-12-01), Loyzim et al.
patent: 4744018 (1988-05-01), Eccleston
patent: 5053688 (1991-10-01), Rees
Chen Chih-Hsin
Chen Mu-Ping
Fang Chih-Hsing
Huang Tai-Ming
Hwu Kuo-Ing
Industrial Technology Research Institute
Ro Bentsu
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