发明名称 |
ELECTRIC POWER CONVERSION APPARATUS |
摘要 |
A single-phase AC/DC electric power conversion apparatus includes an indirect matrix converter having an input interface to receive a first alternating current (AC) signal and an output interface to produce a second AC signal, where the first AC signal has a grid frequency. A transformer has a primary winding and an electrically isolated and magnetically coupled secondary winding. A coupling inductor is connected in series between the output interface of the indirect matrix converter and the primary winding. An H-bridge switching arrangement is connected to the secondary winding and produces an output signal having a DC component and at least one AC component. The at least one AC component has a second order harmonic of the grid frequency. An active filter reduces the second order harmonic AC component. A modular conversion apparatus for three-phase power replicates the single-phase apparatus as a module for each phase and omits the active filter. |
申请公布号 |
US2017005565(A1) |
申请公布日期 |
2017.01.05 |
申请号 |
US201514789412 |
申请日期 |
2015.07.01 |
申请人 |
HELLA CORPORATE CENTER USA, INC. |
发明人 |
BAI Hua;LU JUNCHENG |
分类号 |
H02M1/12;H02M3/335 |
主分类号 |
H02M1/12 |
代理机构 |
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代理人 |
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主权项 |
1. An electric power conversion apparatus, comprising:
an indirect matrix converter having an input interface configured to receive a first alternating current (AC) signal and an output interface configured to produce a second AC signal, said first AC signal having a first frequency; a transformer having a primary winding and an electrically isolated and magnetically coupled secondary winding; a coupling inductor coupled in series between said output interface of said indirect matrix converter and said primary winding; an H-bridge switching arrangement connected to said secondary winding and configured to produce an output signal on an output node, said output signal having a DC component and at least one AC component wherein said at least one AC component comprises a second harmonic of said first frequency; and an active filter coupled to said output node and configured to reduce said second harmonic AC component. |
地址 |
PLYMOUTH TOWNSHIP MI US |