Electric power conversion systems – Current conversion – Using semiconductor-type converter
Patent
1976-11-26
1977-08-16
Shoop, William M.
Electric power conversion systems
Current conversion
Using semiconductor-type converter
307252N, 363128, H02M 700
Patent
active
040428737
ABSTRACT:
A circuit for providing firing signals for SCRs, particularly suitable for use where the power waveform is distorted. The firing signals are based on fixed angles of the power signal rather than on a time basis. Ramp signals from a ramp generator are compared with a loop error voltage or reference voltage for providing the SCR firing signals. A voltage controlled oscillator in a phase locked loop generates an undistorted signal used to start the ramp generator. The output of a lowpass filter in the phase locked loop provides a frequency compensating signal for controlling the slope of the ramp signals.
REFERENCES:
patent: 3582685 (1971-06-01), Bolmgren
patent: 3609517 (1971-09-01), Tucker
patent: 3671836 (1972-06-01), Kolatorowicz et al.
patent: 3683262 (1972-08-01), Neusser et al.
patent: 3932766 (1976-01-01), Kudeljan et al.
patent: 3942041 (1976-03-01), Morriss
patent: 3978394 (1976-08-01), Quayle
patent: 3999114 (1976-12-01), Poppinger et al.
Guldon Industries, Inc.
Shoop William M.
LandOfFree
Phase locked firing circuit for SCRS, or the like does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phase locked firing circuit for SCRS, or the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase locked firing circuit for SCRS, or the like will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-363552