| 发明名称 | Control device of fan motor | ||
| 摘要 | A control device of a fan motor includes: a voltage sensor that detects a voltage applied to a fan motor; a switching portion that selectively connects to each of coils of the fan motor and a rectifier circuit; and a switching control portion that reduces a duty ratio of a driving pulse applied to the switching portion if the voltage detected by the voltage sensor exceeds a threshold. | ||
| 申请公布号 | US9369069(B2) | 申请公布日期 | 2016.06.14 |
| 申请号 | US201414490152 | 申请日期 | 2014.09.18 |
| 申请人 | Sanyo Denki Co., Ltd. | 发明人 | Toda Takahisa;Kaise Takashi;Watanabe Jiro |
| 分类号 | H02P27/04;H02P6/00;H02P6/08;H02P6/14 | 主分类号 | H02P27/04 |
| 代理机构 | Drinker Biddle & Reath LLP | 代理人 | Drinker Biddle & Reath LLP |
| 主权项 | 1. A control device of a fan motor comprising: a rectifier circuit that includes a smoothing capacitor; an inverter circuit that is connected to the rectifier circuit, the inverter circuit serving as a switching portion that selectively connects to each of coils of the fan motor and a power supply; a voltage sensor that is connected between the rectifier circuit and the inverter circuit, the voltage sensor detecting a voltage applied to a fan motor; and a switching control portion that reduces a duty ratio of a driving pulse applied to the inverter circuit if the voltage detected by the voltage sensor exceeds a threshold. | ||
| 地址 | Tokyo JP | ||