Panasonic Intellectual Property Management Co., Ltd.

Panasonic Appliances Refrigeration Devices Singapore

Masamitsu Taura

Shigetomi Tokunaga

Mitsuhiro Fukuda

Masaki Sumi

Hiroaki Kase

Takayuki Okamoto

A compressor driving device includes: a controller that PWM drives a compressor; an inverter circuit unit that supplies power to an electric motor included in the compressor; a drive circuit that drives the inverter circuit unit according to a control signal; a voltage detector that detects a voltage that is output to the electric motor; and a current detector that detects a current that is output to the electric motor. When a product of a detection value of the voltage detector and a detection value of the current detector is greater than a predetermined comparison value, a duty ratio of the control signal is reduced to cause the input power supplied to the electric motor by the inverter circuit unit to have a predetermined input power level or less.

Compressor driving device, compressor including the same, and refrigeration cycle apparatus including the compressor driving device and the compressor

A control device () of an electric sealed compressor of the present invention comprises a power converter () which supplies electric power to an electric motor () of the electric sealed compressor; a driving circuit () which drives the power converter (); abnormality detector () which detects abnormality in an abnormality detection region including the power converter () and the driving circuit (); a controller () configured to output a control signal for driving the power converter to the driving circuit () and stop outputting the control signal in response to a signal (Fo signal) output from the abnormality detector (), the signal indicating that the abnormality has been detected; and an auxiliary protection circuit () configured to deactivate the driving circuit () in response to the signal output from the abnormality detector (), the signal indicating that the abnormality has been detected.

Control device of electric sealed compressor, electric sealed compressor apparatus, and home appliance comprising control device and electric sealed compressor apparatus

Growing community of inventors

Osaka, Japan

Masamitsu Taura