发明名称 |
Controller for a brushless motor |
摘要 |
A controller for a brushless motor that is configured to operate in normal mode or under-voltage mode. When operating in normal mode, the controller generates control signals for exciting a winding of the motor, monitors the magnitude of an input voltage, and switches to under-voltage mode in the event that the input voltage drops below an under-voltage threshold. When operating in under-voltage mode, the controller suspends excitation of the winding, monitors the magnitude of the input voltage, monitors the magnitude of a supply voltage used to power the controller, switches to normal mode in the event that the input voltage exceeds a restart threshold, and resets itself in the event that the supply voltage drops below a brown-out threshold. |
申请公布号 |
US9407085(B2) |
申请公布日期 |
2016.08.02 |
申请号 |
US201414321437 |
申请日期 |
2014.07.01 |
申请人 |
Dyson Technology Limited |
发明人 |
Zheng Libo;Zhou Yongji;Celik Tuncay |
分类号 |
H02H3/24;H02H7/08;H02P6/08;H02M1/32;H02M1/36;H02M7/5387 |
主分类号 |
H02H3/24 |
代理机构 |
Morrison & Foerster LLP |
代理人 |
Morrison & Foerster LLP |
主权项 |
1. A controller for a brushless motor, the controller being configured to operate in normal mode, error mode, and under-voltage mode, wherein:
when operating in normal mode the controller generates control signals for exciting a winding of the motor, monitors the magnitude of an input voltage, switches to error mode in the event that the controller detects an error, and switches to under-voltage mode in the event that the input voltage drops below an under-voltage threshold; when operating in error mode the controller suspends excitation of the winding monitors the magnitude of the input voltage, and switches to under-voltage mode in the event that the input voltage drops below an under-voltage threshold greater than that used in normal mode; and when operating in under-voltage mode the controller suspends excitation of the winding, monitors the magnitude of the input voltage, monitors the magnitude of a supply voltage used to power the controller, switches to normal mode in the event that the input voltage exceeds a restart threshold, and resets itself in the event that the supply voltage drops below a brown-out threshold. |
地址 |
Malmesbury, Wiltshire GB |