发明名称 |
PHASE-LOCKED LOOP, POWER CONVERSION DEVICE AND PHASE SYNCHRONIZATION METHOD |
摘要 |
PROBLEM TO BE SOLVED: To improve a precision of phase synchronization in a phase-locked loop for single-phase AC.SOLUTION: The phase-locked loop is configured to further perform coordinate transformation on a voltage from an α-β coordinate system after quadrature coordinate transformation from three phases to two phases into a d-q coordinate system that is a rotation coordinate, and controls an ineffective voltage component into 0. As voltages Vα and Vβ in the α-β coordinate system, the phase-locked loop uses a real voltage of the single-phase AC subjected to phase synchronization as Vα and uses a value that is a time differentiation value of Vα and includes a frequency of the single-phase AC in a coefficient, as a pseudo voltage Vβ.SELECTED DRAWING: Figure 10 |
申请公布号 |
JP2016082655(A) |
申请公布日期 |
2016.05.16 |
申请号 |
JP20140210219 |
申请日期 |
2014.10.14 |
申请人 |
SUMITOMO ELECTRIC IND LTD |
发明人 |
OKUMURA TOSHIAKI |
分类号 |
H02M7/48;H02J3/04;H02J3/38 |
主分类号 |
H02M7/48 |
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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