- 专利标题: Switching frequency and PWM control to extend power converter lifetime
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申请号: US17029874申请日: 2020-09-23
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公开(公告)号: US11336206B2公开(公告)日: 2022-05-17
- 发明人: Yujia Cui , Garron K. Morris , Lixiang Wei
- 申请人: Rockwell Automation Technologies, Inc.
- 申请人地址: US OH Mayfield Heights
- 专利权人: Rockwell Automation Technologies, Inc.
- 当前专利权人: Rockwell Automation Technologies, Inc.
- 当前专利权人地址: US OH Mayfield Heights
- 代理机构: Fay Sharpe LLP
- 主分类号: H02M7/5387
- IPC分类号: H02M7/5387 ; H02M1/088 ; H02M5/458 ; H02P27/08
摘要:
Methods, non-transitory computer readable mediums, and power conversion systems with a controller configured to provide modulated inverter switching control signals at a first switching frequency in response to an inverter current being greater than a first threshold and less than a second threshold, the second threshold being greater than the first threshold. The controller is further configured to provide the inverter switching control signals at a second switching frequency in response to the inverter current being greater than the second threshold, and to provide the inverter switching control signals at a third switching frequency in response to the inverter current being less than the first threshold, where the second switching frequency is less than the first switching frequency and the third switching frequency is greater than the first switching frequency.
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