Four-link semi-continuous casting machine speed regulating circuit
Source: InternetPublisher:通通 Keywords: Speed regulating circuit BSP excitation Updated: 2020/01/14
The circuit consists of main circuit, trigger circuit, speed negative feedback, voltage differential negative feedback, current
cut-off circuit, loss of excitation protection and other parts. Since the motor power is small (1. lkW), a single-phase circuit is used. In the figure, BQM and BQTG are the excitation
windings
of the DC motor M and the tachometer generator TG respectively . They are provided with excitation voltage by
transformer Tz through rectifier bridge VC3 .
Adjust the master potentiometer RP3 to change the speed of the motor.
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