| 发明名称 |
TORQUE ESTIMATING SYSTEM FOR SYNCHRONOUS ELECTRIC MOTOR |
| 摘要 |
A torque estimating system for a synchronous electric motor having a permanent magnet includes: a superimposing unit configured to superimpose a voltage or current of a frequency different from a frequency of a fundamental wave driving the synchronous electric motor on at least a d-axis of the synchronous electric motor; a magnet temperature estimating unit configured to estimate a temperature of the permanent magnet from the superimposed voltage or current and a current or voltage obtained by the superimposing; and a torque estimating unit configured to estimate a torque of the synchronous electric motor from the estimated temperature of the permanent magnet. |
| 申请公布号 |
US2015198491(A1) |
申请公布日期 |
2015.07.16 |
| 申请号 |
US201414450797 |
申请日期 |
2014.08.04 |
| 申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
DIAZ REIGOSA David;Briz Del Blanco Fernando;Yoshida Hideo;Kato Takashi |
| 分类号 |
G01L3/00;H02K11/00 |
主分类号 |
G01L3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A torque estimating system for a synchronous electric motor having a permanent magnet comprising:
a superimposing unit configured to superimpose a voltage or current of a frequency different from a frequency of a fundamental wave driving the synchronous electric motor on at least a d-axis of the synchronous electric motor; a magnet temperature estimating unit configured to estimate a temperature of the permanent magnet from the superimposed voltage or current and a current or voltage obtained by the superimposing; and a torque estimating unit configured to estimate a torque of the synchronous electric motor from the estimated temperature of the permanent magnet. |
| 地址 |
Yokohama-shi JP |
