| 摘要 |
A synchronous machine control device for a polyphase synchronous machine (20) includes a phase detection sensor (32) and a control circuit (30, 130). The phase detection sensor (32) is set to 90° advanced. The control circuit (30, 130) includes phase detection, commutation driver and time delay circuits (38A-38C, 50, 40A-40C, respectively). The phase detection circuit (38A-38C) is coupled to the phase detection sensor (32) and is configured to determine electrical phase of the machine (20). The commutation driver circuit (50) is coupled to the phase detection circuit (38A-38C) and has high-side and low-side outputs for selectively and alternately controlling commutation of the machine (20). The time delay circuit (40A-40C) is coupled to the phase detection sensor (32), the phase detection circuit (38A-38C) and the commutation driver circuit (50). The time delay circuit (40A-40C) provides a control output to the commutation driver circuit (50) based upon an adjustable setpoint compared to a speed of the machine (20) as measured by the phase detection circuit (38A-38C). |
