Device to control a 3-phase motor

Details Device to control a 3-phase motor Device to control a 3-phase motor

2005-04-12

2005-04-12

Ip, Paul (Department: 2837)

Electricity: motive power systems

Braking

Plural, diverse or diversely controlled braking means

C318S269000, C318S273000, C318S377000, C318S375000, C318S757000, C363S037000, C323S351000

Reexamination Certificate

active

06879123

ABSTRACT:
A device to control a 3-phase motor having an inverter connected to each phase terminal and a brake to arrest the 3-phase motor, includes a power supply to supply power to the brake and the inverter at the same time based on a predetermined synchronization signal. The device also includes a control unit to output an inverter control signal to control the inverter and a power control signal to enable the power supply to supply the power to the brake and the inverter. Thus, the device to control a 3-phase motor has an immediate response to a control signal with a reduced production cost and a system size, by reducing circuit components such as a brake relay and a brake power supply.

REFERENCES:
patent: 4627370 (1986-12-01), Nakamura
patent: 5049793 (1991-09-01), Tanaka et al.
patent: 5892341 (1999-04-01), Chmiel
patent: 6232758 (2001-05-01), Konda et al.
patent: 20040119432 (2004-06-01), Youm
patent: 20040155615 (2004-08-01), Youm
patent: 20040155623 (2004-08-01), Youm
patent: 20040160792 (2004-08-01), Youm et al.
patent: 20040232871 (2004-11-01), Deck et al.

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