| Patent application number | Description | Published |
|---|
| 20080211449 | Multiphase Current Supplying Circuit, Driving Apparatus, Compressor And Air Conditioner - A multiphase current supplying circuit includes a converter, an intervening circuit, an inverter, a control circuit and a lightning arrester. A power supply system is connected to the converter with the lightning arrester interposed therebetween, and the ac voltage is rectified. The intervening circuit includes a capacitor and a bypass connected in parallel thereto. In the bypass, a diode, a resister and a capacitor are connected in series, and the direction from an anode to a cathode of the diode corresponds to the direction from a high potential side to a low potential side of the smoothing capacitor. | 09-04-2008 |
| 20090251086 | MOTOR CONTROL UNIT - A motor control unit ( | 10-08-2009 |
| 20090256161 | POWER CONVERSION APPARATUS - In the case where a chip is made of wide band gap semiconductor, a power conversion apparatus is obtained in which a component having a low heat resistant temperature is prevented from receiving thermal damage by heat generated at the chip. In a configuration including: a chip portion ( | 10-15-2009 |
| 20100309700 | POWER CONVERTER - An inverter circuit ( | 12-09-2010 |
| 20100328975 | POWER CONVERTER - In a power converter for converting AC power supplied from an AC power source or DC power supplied from a DC power source to DC power or AC power having predetermined voltage and frequency including at least one switching device ( | 12-30-2010 |
| 20110026285 | BIDIRECTIONAL SWITCH CIRCUIT AND POWER CONVERTER INCLUDING THE SAME - A bidirectional switch circuit includes two switching elements connected to conduct a current in both directions. The two switching elements are connected in series to each other. Of the two switching elements, the switching element to which a reverse voltage is applied, a voltage of a source of one of the switching elements being higher than a voltage of a drain of the one, is configured to conduct a current from the source to the drain even when an on-drive signal is not being input to a gate terminal of the one. | 02-03-2011 |
| 20120127768 | POWER CONVERTER - A power converter includes a power converter section ( | 05-24-2012 |
| 20120182770 | POWER CONVERTER - The power converter includes a diode rectifier which rectifies alternating current power output from an alternating current power supply, a reactor provided between the alternating current power supply and the diode rectifier, an inverter circuit to which power output from the diode rectifier is directly supplied, and a capacitor provided between power supply lines on a primary side of the diode rectifier. | 07-19-2012 |
| 20130300327 | POWER CONVERSION APPARATUS - A DC link is provided, which includes a capacitor connected in parallel to an output of a converter circuit, and outputs a pulsating DC link voltage. An inverter circuit is provided, which converts an output of the DC link to AC by switching, and supplies the AC to a motor connected thereto. A controller is provided, which controls switching of the inverter circuit so that motor currents pulsate in synchronization with pulsation of a power-supply voltage. The controller controls the switching of the inverter circuit in accordance with a load of the motor or an operational state of the motor, and reduces pulsation amplitude of the motor currents. | 11-14-2013 |
| 20130300334 | POWER CONVERSION APPARATUS - A power conversion apparatus is equipped with switching devices to perform power conversion of input AC power supplied from an AC power supply to output AC power having a predetermined voltage and a predetermined frequency, and to supply the power to a motor connected thereto. The apparatus includes a controller controlling switching of the switching devices, a capacitor smoothing a ripple generated by the switching of the switching devices, a current controller controlling a current flowing to the motor, and a voltage distortion corrector detecting a harmonic component caused by distortion in motor input power, and superimposing compensation values on an output of the current controller in accordance with a value of the harmonic component. | 11-14-2013 |
