Title:
ACTIVE FILTER DEVICE AND ELECTRIC COMPRESSOR PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2023/140200
Kind Code:
A1
Abstract:
[Problem] To provide an active filter device that has improved the attenuation characteristics of a passive common mode noise filter without using a common mode transformer or significantly increasing the volume and weight of the common mode noise filter. [Solution] An active filter device 1 comprises a common mode choke coil 28 inserted in a pair of power supply lines 11 and 12, a detection unit 29 that detects a common mode voltage, an inverting amplifier circuit 37 that inverts and amplifies the common mode voltage detected by the detection unit 29, and Y capacitors 21 and 22 that are connected between the output of the inverting amplifier circuit and the pair of power supply lines 11 and 12, respectively, the voltage output by the inverting amplifier circuit 37 being applied to the Y capacitors 21 and 22 as compensation voltages.
More Like This:
| JPS58176600 | [Title of the device] Motor driving device |
| JPH02261064 | VOLTAGE CONTROLLING OF POWER INVERTER |
| JP4894509 | Inverter controller |
Inventors:
YOSHIDA HIROSHI (JP)
KOBAYASHI KOJI (JP)
KASHIHARA TATSUKI (JP)
OGASAWARA SATOSHI (JP)
UDA IORI (JP)
KOBAYASHI KOJI (JP)
KASHIHARA TATSUKI (JP)
OGASAWARA SATOSHI (JP)
UDA IORI (JP)
Application Number:
PCT/JP2023/000927
Publication Date:
July 27, 2023
Filing Date:
January 16, 2023
Export Citation:
Assignee:
SANDEN CORP (JP)
UNIV HOKKAIDO NAT UNIV CORP (JP)
UNIV HOKKAIDO NAT UNIV CORP (JP)
International Classes:
H02M7/48
Foreign References:
| JP2017051085A | 2017-03-09 | |||
| JP2005204438A | 2005-07-28 | |||
| JPH11196565A | 1999-07-21 | |||
| JP2010520670A | 2010-06-10 | |||
| JP2018007531A | 2018-01-11 | |||
| JP2008312429A | 2008-12-25 |
Download PDF: