发明名称 |
Power converter and method including noise suppression by controlling phase shifting of converter cells |
摘要 |
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. |
申请公布号 |
US8711586(B2) |
申请公布日期 |
2014.04.29 |
申请号 |
US20100839590 |
申请日期 |
2010.07.20 |
申请人 |
YAMADA YOICHIRO;KATOH SHUJI;INOUE SHIGENORI;HITACHI, LTD. |
发明人 |
YAMADA YOICHIRO;KATOH SHUJI;INOUE SHIGENORI |
分类号 |
H02M7/49;H02M1/12 |
主分类号 |
H02M7/49 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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