DC pump control system
First Claim
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1. A control system comprising:
- an input port for a first type of electrical energy having a periodically varying parameter;
a conversion circuit, coupled to the port for conversion of the first type to a second type of electrical energy with a non-periodically varying corresponding, first parameter;
an output port coupled to the circuit;
a programmed control unit, coupled to the circuit which includes executable instructions for monitoring the first and second types of electrical energy and for adjusting the circuit so as to maintain at least one different parameter of a second type below a predetermined maximum value.
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Abstract
A processor controlled DC pump system charges back-up batteries using utility supplied AC power. In the absence of AC the batteries energize a DC load. When AC is restored, the processor regulates total output current to charge the batteries and energize the load without exceeding the maximum allowable total output current.
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Citations
26 Claims
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1. A control system comprising:
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an input port for a first type of electrical energy having a periodically varying parameter;
a conversion circuit, coupled to the port for conversion of the first type to a second type of electrical energy with a non-periodically varying corresponding, first parameter;
an output port coupled to the circuit;
a programmed control unit, coupled to the circuit which includes executable instructions for monitoring the first and second types of electrical energy and for adjusting the circuit so as to maintain at least one different parameter of a second type below a predetermined maximum value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pump system couplable to a back-up battery comprising:
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a pump having a DC drive motor;
a control element;
an AC/DC power conversion circuit coupled to the control element; and
,a sensor of current output from the conversion circuit wherein the output current charges the battery only until it exhibits a predetermined charging condition and the output current drives the motor of the pump and charges the battery up to a not-to-be exceeded predetermined value. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A pump system for use with a DC-type pump comprising:
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an input port for a first type of electrical energy having a periodically varying parameter;
a conversion circuit, coupled to the port for conversion of the first type to a second type of electrical energy with a non-periodically varying corresponding, first parameter;
an output port coupled to the circuit wherein the output port can be coupled to the pump;
a programmed control unit, coupled to the circuit which includes executable instructions for monitoring the first and second types of electrical energy and for adjusting the circuit so as to maintain at least one different parameter of a second type below a predetermined maximum value. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification