基本信息:
- 专利标题: MOTOR CURRENT RECONSTRUCTION VIA DC BUS CURRENT MEASUREMENT
- 专利标题(中):电机电流重建通过直流总线电流测量
- 申请号:PCT/US2003/009972 申请日:2003-03-28
- 公开(公告)号:WO2003084044A2 公开(公告)日:2003-10-09
- 发明人: HO, Eddy, Ying Yin , TAKAHASHI, Toshio
- 申请人: INTERNATIONAL RECTIFIER CORPORATION
- 申请人地址: 233 Kansas Street, El Segundo, CA 90245 US
- 专利权人: INTERNATIONAL RECTIFIER CORPORATION
- 当前专利权人: INTERNATIONAL RECTIFIER CORPORATION
- 当前专利权人地址: 233 Kansas Street, El Segundo, CA 90245 US
- 代理机构: WEINER, Samuel, H.
- 优先权: US60/368,860 20020328; US10/402,909 20030327
- 主分类号: H02P
- IPC分类号: H02P
摘要:
A technique for reconstructing phase currents based on measurements of a DC bus current. Non-observable regions of DC bus current samples to reconstruct phase currents are reduced in size by using two phase space vector modulation. The non-observable regions can be further reduced by omitting deadtime insertions for switch actuations when output current is higher than a given threshold. Voltage command vectors in non-observable areas can be formed by two additive vectors of differing phase and magnitude to obtain an observable DC bus current reflecting phase current. The additive vectors have the same combined time average value as that of the voltage command vector.
摘要(中):
基于DC总线电流测量重建相电流的技术。 通过使用两个相位空间矢量调制,大小减小了用于重构相电流的直流母线电流样本的不可观察区域。 当输出电流高于给定的阈值时,通过省略开关致动器的死时间插入,可以进一步减小不可观察的区域。 不可观测区域的电压指令矢量可以通过两个不同相位和幅度的加法矢量形成,以获得反映相电流的可观察直流母线电流。 加权矢量具有与电压指令矢量相同的组合时间平均值。