发明授权
US5166591A Current chopping strategy for generating action in switched reluctance
machines
失效
用于在开关磁阻电机中产生动作的当前斩波策略
- 专利标题: Current chopping strategy for generating action in switched reluctance machines
- 专利标题(中): 用于在开关磁阻电机中产生动作的当前斩波策略
-
申请号: US801327申请日: 1991-12-02
-
公开(公告)号: US5166591A公开(公告)日: 1992-11-24
- 发明人: Charles M. Stephens , Arthur V. Radun
- 申请人: Charles M. Stephens , Arthur V. Radun
- 申请人地址: NY Schenectady
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: NY Schenectady
- 主分类号: H02P9/40
- IPC分类号: H02P9/40 ; H02P25/08
摘要:
A method and apparatus are provided for controlling the switching devices in a switched reluctance machine bridge inverter, which inverter has at least two switching devices per phase leg, during generating operation. At the start of the conduction interval for a particular machine phase, both switching devices of that phase are turned on, causing the phase current to build up. When the phase current reaches an upper hysteresis band level, both switching devices are turned off, resulting in the application of a reverse voltage across the phase winding and directing the phase current into the power source via flyback diodes. At relatively low and medium speeds, the phase current decreases until it reaches a lower hysteresis band level, at which point only one switching device is turned back on to form a freewheeling loop through that device and the corresponding flyback diode. The process repeats until the turn-off angle of the active phase is reached, at which point both switches are turned off in order to discharge the corresponding phase winding.
公开/授权文献
- US4598027A Tape measure holster 公开/授权日:1986-07-01
信息查询