Inverter device

Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control

Reexamination Certificate

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Details

C363S080000, C363S097000, C363S098000, C323S217000, C323S219000, C323S208000, C323S218000, C323S233000

Reexamination Certificate

active

08084974

ABSTRACT:
There is provided an inverter device capable of simplifying the circuit structure, lowering the cast, and downsizing of the device. The inverter device detects a switching change of an inverter by a pulse and is equipped with a pulse signal detector capable of detecting a motor residual voltage or a phase and a detector for detecting a residual voltage or a phase. The inverter device includes a voltage detector, a circuit for detecting a pulse signal based on a comparison between a phase voltage detection value per one phase output from the voltage detector and a first reference voltage value, a circuit for detecting a line residual voltage based on phase voltage detection values of two phases output from the voltage detector, and a circuit for detecting a line phase based on a comparison between the line residual voltage and a second reference voltage value.

REFERENCES:
patent: 5311419 (1994-05-01), Shires
patent: 5481166 (1996-01-01), Moreira
patent: 5504667 (1996-04-01), Tanaka et al.
patent: 5783917 (1998-07-01), Takekawa
patent: 6115274 (2000-09-01), Mao
patent: 6232730 (2001-05-01), Doyama et al.
patent: 7274161 (2007-09-01), Mori et al.
patent: 7285930 (2007-10-01), Weinmann et al.
patent: 01-126192 (1989-05-01), None
patent: 04-069066 (1992-03-01), None
patent: 06-121544 (1994-04-01), None
patent: 2006-296008 (2006-10-01), None

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