Invention Grant
US08711586B2 Power converter and method including noise suppression by controlling phase shifting of converter cells
有权
功率转换器和方法包括通过控制转换器单元的相移来抑制噪声
- Patent Title: Power converter and method including noise suppression by controlling phase shifting of converter cells
- Patent Title (中): 功率转换器和方法包括通过控制转换器单元的相移来抑制噪声
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Application No.: US12839590Application Date: 2010-07-20
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Publication No.: US08711586B2Publication Date: 2014-04-29
- Inventor: Yoichiro Yamada , Shuji Katoh , Shigenori Inoue
- Applicant: Yoichiro Yamada , Shuji Katoh , Shigenori Inoue
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2009-169684 20090721
- Main IPC: H02M7/49
- IPC: H02M7/49 ; H02M1/12
Abstract:
The noise generated from a power converter is suppressed by increasing the noise frequency to a level not lower than the maximum frequency of the human audible range. To obtain the frequency of an output current harmonic component as a noise source which has exceeded the maximum frequency of the human audible range, it is adequate to determine that the frequency of a driving carrier wave for the individual converter cells in the power converter, in which the phases of the carrier wave for the converter cells are mutually shifted by a given value between the converter cells, meets the following equation.
Public/Granted literature
- US20110019442A1 POWER CONVERTER Public/Granted day:2011-01-27
Information query
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