Denso Corporation

Satoshi Takada

Yuji Hayashi

Tatsuya Murakami

Rikizou Akagi

Masakazu Fukada

Satoru Yoshikawa

Shingo Inaishi

Hideyuki Sumino

A power conversion device includes an inverter which converts a DC power supplied thereto from a power supply device to an AC power using an operation of a switching element and outputs the AC power toward a load a current meter which measures an output current from the inverter, and a control unit which controls the operation of the switching element to change an output voltage waveform from the inverter. The control unit changes the output voltage waveform on the basis of the measured output current.

Power conversion device

A bearingof a support portionfor rotatably supporting a shaftof a rotating bodyto be measured with respect to the magnitude of unbalance thereof is formed into a hollow U-shape and has formed therein an injection portfor injecting a gas towards the shaft. As the shaft can be supported and floats without making contact with the bearing by virtue of the gas injected from the injection port, the friction can be made small and, hence, a change in rotational speed can be made small. The number and position of the injection ports are determined as required.

Unbalance measuring apparatus

Growing community of inventors

Kariya, Japan

Satoshi Takada