Power controller for heater load

Details Power controller for heater load Power controller for heater load

1988-01-19

1989-08-22

Salce, Patrick R.

Electricity: power supply or regulation systems

Output level responsive

Phase controlled switching using electronic tube or a three...

323322, G05F 1455

Patent

active

048599263

ABSTRACT:
A controller for a load such as the heater elements of an actuator for drying the various zones or slices of a moving sheet of a papermaking machine includes silicon controlled rectifiers for each zone or slice of the moving sheet whose firing angle is controlled by an external power command signal. This power command signal is processed by a digital signal processor which strobes at a high rate the line voltage and load current to provide a closed loop feedback control technique for power being applied to the load and in addition, the processor, at the same time, has an open loop firing angle control routine which has a fast response time to protect against abnormal conditions within one-half cycle of load voltage.

REFERENCES:
patent: 4063146 (1977-12-01), Oliver
patent: 4117392 (1978-09-01), Kintigh et al.
patent: 4358729 (1982-11-01), Hart
patent: 4494316 (1985-01-01), Stephansen et al.
patent: 4661765 (1987-04-01), Bando et al.

Affiliated with

Also associated with

Rating

Power controller for heater load does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power controller for heater load, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power controller for heater load will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2418847