Power monitoring and regulating circuit and method having an ana

Details Power monitoring and regulating circuit and method having an ana Power monitoring and regulating circuit and method having an ana

1976-07-22

1977-07-05

Scott, James R.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

23515121, 324103R, H02J 300

Patent

active

040342336

ABSTRACT:
In a closed loop control system for monitoring and regulating the rate of electrical power delivered to a plurality of electrical loads, an improved circuit is disclosed that is responsive to an analog input signal representing a measured power rate and has a digital pulse output for conditioning a digital switching circuit to add one or more loads when the measured power rate falls below a predetermined rate and to shed one or more loads when the measured power rate exceeds such predetermined rate. The analog input signal is compared with a reference signal to produce an analog error signal that is first compensated for certain types of power rate deviations and is then fed to an analog to digital conversion circuit which includes a threshold detection circuit and a pulse generator circuit and produces one or more output pulses in response to a predetermined threshold magnitude of the compensated error signal. The polarity of the error signal is detected to steer the output pulses to one or the other of a pair of inputs of a load control switching circuit, one input thereof being effective to add a load and the other input being effective to shed a load in response to each received pulse.

REFERENCES:
patent: 3339079 (1967-08-01), Kessler
patent: 3566147 (1971-02-01), Masreliez

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