| 发明名称 | Control device and control method for a vehicle AC generator | ||
| 摘要 | The control device including: a power transistor (502) for controlling conduction/non-conduction of a field coil (3) in accordance with an output voltage of an AC generator (1) mounted on a vehicle; an RPM detection section (511) for detecting an RPM of the AC generator (1); a drive duty setting section (510) for determining whether or not the RPM detected by the RPM detection section (511) is equal to or higher than a predetermined threshold, and reducing a conduction ratio of the field coil (3) when determining that the RPM is equal to or higher than the predetermined threshold; and a driver (504) for driving the power transistor (502) based on the conduction ratio. In this manner, the conduction ratio of the field coil (3) is reduced to suppress the drive torque. | ||
| 申请公布号 | US8797002(B2) | 申请公布日期 | 2014.08.05 |
| 申请号 | US201213685268 | 申请日期 | 2012.11.26 |
| 申请人 | Mitsubishi Electric Corporation | 发明人 | Komurasaki Keiichi;Tanaka Kazunori;Sumimoto Katsuyuki |
| 分类号 | B60L11/02 | 主分类号 | B60L11/02 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A control device for a vehicle AC generator, the control device comprising: a power transistor for controlling conduction/non-conduction of a field coil in accordance with an output voltage of an AC generator mounted on a vehicle; an RPM detection section for detecting an RPM of the AC generator; a drive duty setting section for determining whether or not the RPM detected by the RPM detection section is equal to or higher than a predetermined threshold, and reducing a conduction ratio of the field coil when determining that the RPM is equal to or higher than the predetermined threshold; and a driver for driving the power transistor based on the conduction ratio of the field coil output from the drive duty setting section. | ||
| 地址 | Tokyo JP | ||