发明名称 |
PWM CONVERTER CONTROL APPARATUS |
摘要 |
A PWM converter control apparatus is capable of simply reducing the higher harmonics of an electric rolling stock formation unit without strictly setting the zero-phase detection tolerance of a reference signal. The control apparatus is adapted to detect components which are n-times as many as the carrier frequency components of a primary current, and a phase is finely regulated with respect to a pre-designated phase difference so that the phase difference of each converter unit is at a level not lower than a desired level, whereby a phase shift due to a difference in the accuracy of detecting the reference frequency of each converter and a difference in the delay of on-off switching actions is corrected. This enables an ideal phase difference operation to be attained. |
申请公布号 |
WO9843848(A1) |
申请公布日期 |
1998.10.08 |
申请号 |
WO1997JP01112 |
申请日期 |
1997.03.31 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
NAKAMOTO, NORIAKI |
分类号 |
B60L9/00;B60L9/24;B60L9/28;H02M5/45;H02M7/155;H02M7/17;(IPC1-7):B60L9/24;H02M7/162 |
主分类号 |
B60L9/00 |
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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