Title:
POWER CONVERSION DEVICE AND METHOD FOR REDUCING OUTPUT CURRENT NOISE THEREFROM
Document Type and Number:
WIPO Patent Application WO/2017/013723
Kind Code:
A1
Abstract:
In order to provide noise reduction that takes into consideration the noise levels felt by people, by using a method for reducing output current noise in a power conversion device, this power conversion device comprises: a carrier frequency setting unit that switches a plurality of carrier frequencies; a carrier frequency limiting unit that limits a prescribed range of carrier frequencies; a carrier frequency generation unit that generates a carrier frequency used in PMW generation, from the carrier frequency setting unit and the carrier frequency limiting unit; a PMW generation unit that generates PMW output signals using the carrier frequency generated by the carrier frequency generation unit; and an AC conversion unit that outputs AC voltage using the PMW output signals. As a result, a power conversion device is provided that is capable of reducing the noise felt by people.
Inventors:
ARAO YUSUKE (JP)
Application Number:
PCT/JP2015/070616
Publication Date:
January 26, 2017
Filing Date:
July 17, 2015
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H02P27/08; H02M7/48
Foreign References:
| JPH0947026A | 1997-02-14 | |||
| JP2001025258A | 2001-01-26 | |||
| JP2012016104A | 2012-01-19 | |||
| JP2012135118A | 2012-07-12 | |||
| JP2009065791A | 2009-03-26 | |||
| JP2014064448A | 2014-04-10 | |||
| JP2011158170A | 2011-08-18 | |||
| JP2000184786A | 2000-06-30 |
Other References:
See also references of EP 3327918A4
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
Download PDF:
Previous Patent: SHUTOFF CONTROL METHOD AND POWER CONVERSION DEVICE USING SAME
Next Patent: CLAMPING DEVICE FOR INJECTION MOLDING OF WAX PATTERN
Next Patent: CLAMPING DEVICE FOR INJECTION MOLDING OF WAX PATTERN