Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2009-12-09
2011-12-27
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
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.
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Ditthavong Mori & Steiner, P.C.
Kabushiki Kaisha Yaskawa Denki
Leykin Rita
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