发明授权
US06215677B1 Method and an apparatus for current sensing in an AC/DC converter
失效
用于AC / DC转换器中的电流感测的方法和装置
- 专利标题: Method and an apparatus for current sensing in an AC/DC converter
- 专利标题(中): 用于AC / DC转换器中的电流感测的方法和装置
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申请号: US09590300申请日: 2000-06-09
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公开(公告)号: US06215677B1公开(公告)日: 2001-04-10
- 发明人: Mats Karlsson , Christer Thorén
- 申请人: Mats Karlsson , Christer Thorén
- 优先权: SE9902179 19990610
- 主分类号: H02M7155
- IPC分类号: H02M7155
摘要:
In a multi-phase AC/DC converter provided with an artificial neutral point a voltage sensing circuit is provided. The voltage sensing circuit comprises three small windings connected to a first common point and to three impedances. In the circuit, the voltage between the first common point of the windings and a second common point of the impedances is measured. The voltage is indicative of the current flowing in the artificial neutral point. By using such a circuit the current sensing in the neutral point can be simplified and the multi-phase AC/DC converter made at a lower cost.
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