发明授权
- 专利标题： Method of operating a resonant inverter using zero current switching and arbitrary frequency pulse width modulation
- 专利标题（中）： 使用零电流切换和任意频率脉宽调制操作谐振逆变器的方法
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申请号： US11951969申请日： 2007-12-06
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公开(公告)号： US07800928B1公开(公告)日： 2010-09-21
- 发明人: John Jay Dernovsek , Steve Mays
- 申请人： John Jay Dernovsek , Steve Mays
- 申请人地址： US AL Madison
- 专利权人： Universal Lighting Technologies, Inc.
- 当前专利权人： Universal Lighting Technologies, Inc.
- 当前专利权人地址： US AL Madison
- 代理机构： Waddey & Patterson
- 代理商 Mark J. Patterson; Gary L. Montle
- 主分类号： H02M7/5387
- IPC分类号： H02M7/5387 ; H02M3/24
摘要：
A method of controlling a series-resonant, half-bridge inverter includes turning off the bottom switch and turning on the top switch the inverter when the current through the resonant inductor crosses the zero axis while the current is increasing, thereby insuring zero voltage switching of the inverter switches and increases the overall switching period so that the actual inverter frequency is closer to the resonant frequency of the series-resonant circuit. Using an on-time control circuit, the method further includes controlling the current delivered to the load (such as a gas discharge lamp) by varying the on-time of the top inverter switch.
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