Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1999-04-06
2000-10-31
Ip, Paul
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 318439, H02P 700
Patent
active
061407828
ABSTRACT:
A fan driver is provided to drive a DC brushless fan. The fan driver has a pulse generator for receiving a signal indicating the phase of a rotor in the fan from a Hall element and generating two pulse signals whose phases are inverted by about 180.degree.. Two driving units activated by the two pulse signals, respectively, are provided to alternatively apply current to the two coils thereby generating magnetic fields to rotate the rotor of the fan. Two switch elements are connected to the two driving units so that anti-electromotive voltage generated by one of the two coils can be transferred to the other coil.
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Ip Paul
Silicon Touch Technology Inc.
Warren, Jr. Sanford E.
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