发明名称 |
METHOD AND APPARATUS FOR PULSE-WIDTH MODULATION OF A VARIABLE-FREQUENCY DRIVE |
摘要 |
The present invention disclose a method and apparatus for pulse-width modulation (PWM) of a variable-frequency drive (VFD), the method comprising:for each sector of a space vector graph for PWM of the VFD, identifying at least two possible clamping phases in switching between the vectors in the sector; comparing currents in multiple phases in at least one PWM cycle; in the sector of the space vector graph corresponding to the PWM cycle, determining the possible clamping phase with the maximum current in the at least two possible clamping phases; and clamping the determined possible clamping phase with the maximum current. |
申请公布号 |
EP3014754(A1) |
申请公布日期 |
2016.05.04 |
申请号 |
EP20140818698 |
申请日期 |
2014.06.27 |
申请人 |
EATON CORPORATION |
发明人 |
CHEN, YILUN;CHENG, XIAOMENG |
分类号 |
H02M7/5387;F04B49/06;H02P23/00 |
主分类号 |
H02M7/5387 |
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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