发明名称 |
OFFSET VOLTAGE GENERATOR AND METHOD FOR GENERATING AN OFFSET VOLTAGE OF THREE-PHASE INVERTER |
摘要 |
In one embodiment, an offset voltage generator includes a first limiter configured to compare a first phase-voltage signal with a maximum limit value and a minimum limit value to output a first limit-voltage signal; a second limiter configured to compare a second phase-voltage signal with the maximum limit value and the minimum limit value to output a second limit-voltage signal; a third limiter configured to compare a third phase-voltage signal with the maximum limit value and the minimum limit value to output a third limit-voltage signal; and a summer configured to add a difference between the first phase-voltage signal and the first limit-voltage signal, a difference between the second phase-voltage signal and the second limit-voltage signal, and a difference between the third phase-voltage signal and the third limit-voltage signal, to output an offset voltage. |
申请公布号 |
US2016308460(A1) |
申请公布日期 |
2016.10.20 |
申请号 |
US201615098238 |
申请日期 |
2016.04.13 |
申请人 |
LSIS CO., LTD. |
发明人 |
Lee Hak-Jun |
分类号 |
H02M7/44 |
主分类号 |
H02M7/44 |
代理机构 |
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代理人 |
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主权项 |
1. An offset voltage generator in a three-phase inverter, the three-phase inverter operating in a continuous modulation mode or a discontinuous modulation mode, the offset voltage generator comprising:
a first limiter configured to compare a first phase-voltage signal with a maximum limit value and a minimum limit value to output a first limit-voltage signal; a second limiter configured to compare a second phase-voltage signal with the maximum limit value and the minimum limit value to output a second limit-voltage signal; a third limiter configured to compare a third phase-voltage signal with the maximum limit value and the minimum limit value to output a third limit-voltage signal; and a summer configured to add a difference between the first phase-voltage signal and the first limit-voltage signal, a difference between the second phase-voltage signal and the second limit-voltage signal, and a difference between the third phase-voltage signal and the third limit-voltage signal, to output an offset voltage, wherein the summer outputs a different offset voltage depending on a modulation index determined by a DC link voltage of the three-phase inverter to switch between the modulation modes of the three-phase inverter. |
地址 |
Gyeonggi-do KR |