发明名称 |
APPARATUS AND METHOD FOR STARTING AND CONTROLLING A MOTOR |
摘要 |
An apparatus and method for starting and controlling a motor comprises a timing circuit and a main control circuit. The timing circuit initiates a start-up period upon detecting power and provides an indication of the start-up period. The main control circuit receives the indication of the start-up period and applies variable magnitudes of power to a main winding of the motor. During the start-up period, the power applied to the main winding has a fixed, substantially maximum magnitude. During a period of normal operation following, the power applied to the main winding has a user-adjustable magnitude. The start-up period duration is as long as necessary for the motor to overcome a starting load thereon. Preferably, the timing circuit has a timer measuring the start-up period and a main relay signaling the start-up period to the main control circuit. Preferably, the apparatus also has a start-up relay and a start-up control circuit applying power to a start-up winding of the motor in addition to the power applied by the main control circuit to the main winding during the start-up period.
|
申请公布号 |
CA2155810(C) |
申请公布日期 |
2003.04.15 |
申请号 |
CA19952155810 |
申请日期 |
1995.08.10 |
申请人 |
|
发明人 |
BANKS, SCOTT A.;KRAVETS, VALERY;FOX, JOHN C. |
分类号 |
H02P1/42;(IPC1-7):H02P1/42 |
主分类号 |
H02P1/42 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|