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US 8,575,907 B2Granted
Predictable method for reducing power consumption during peak demand
OwnerYang Paninventor
Life of this patent
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Abstract
System and method for reducing power consumption during peak demand period is disclosed. A consumption unit comprises a power limiter. An AC power limiter converts a portion of AC power into heat and generates an output for a temperature sensor. A comparator has one of the inputs as the output of the temperature sensor and another input as a reference generated by a controller. A feedback loop is established by connecting output of the comparator to secondary winding of a power transformer through a switch. A DC power limiter is also disclosed.
Claims19
An electricity power limiter comprising:
- (a) a power sensor for receiving a predetermined portion of output power of a secondary winding of a transformer;
- (b) a converter for converting received power into heat through a heating element of a microstructure;
- (c) a temperature sensor for measuring temperature of the microstructure;
- (d) a comparator comprising a first input as the output of the temperature sensor, a second input as a reference signal generated from a controller and an output as a PWM (Pulse-Width Modulation) signal, wherein said reference signal generated by the controller is determined based upon at least a predetermined maximum output power of the secondary winding of the transformer;
- (e) a feedback loop connected between the output of the comparator and an input of a switch;
- and
- (f) said switch connected to the secondary winding in series for modulating the output power by said PWM signal.
4 more elements
An electricity power limiter comprising:
- (a) a first converter for converting DC power to PWM (Pulse-Width Modulation) form;
- (b) a power sensor for extracting a predetermined portion of the DC power;
- (c) a second converter for converting the extracted DC power into heat through a heating element of a microstructure;
- (d) a temperature sensor for measuring temperature of the microstructure;
- (e) a comparator comprising a first input as the output of the temperature sensor, a second input as a reference signal generated from a controller and an output as PWM signal, wherein said reference signal generated by the controller is determined based upon at least a predetermined maximum output power of said power limiter;
- and
- (f) a feedback loop connected between the output of the comparator and said first converter.
4 more elements
Dependencies are inferred from the claim text.