METHODS AND SYSTEMS FOR CONTROLLING ELECTRICAL POWER TO DC LOADS
First Claim
1. A method of using pulses of fixed duration and fixed frequency for power control of electrical loads, the method comprising:
- with a processing system, providing a timing signal;
determining a desired power level for an electrical load;
generating a control signal including a sequence of control pulses of fixed duration and fixed frequency within the timing signal and corresponding to the desired power level; and
supplying the control signal to an input of a current switch connected to the electrical load to place the switch in one of an ON state during each pulse and an OFF state after each pulse to cause current to flow from a first potential to a second potential through the electrical load during the ON state.
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Accused Products
Abstract
Fixed Frequency, Fixed Duration power controls methods and systems are described for application of power to electrical loads. FFFD techniques according to the present disclosure utilize power train pulses with fixed-frequency fixed-duration pulses to control power applied to a load. The load can be any type of DC load. FFFD techniques allows for controlled variation of the fixed length of the ON pulse, the Fixed length of the OFF or recovery period, the total time period for one cycle, and/or the number of pulses in that time period. Applications to electric motors, electric lighting, and electric heating are described. Related circuits are also described.
31 Citations
26 Claims
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1. A method of using pulses of fixed duration and fixed frequency for power control of electrical loads, the method comprising:
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with a processing system, providing a timing signal; determining a desired power level for an electrical load; generating a control signal including a sequence of control pulses of fixed duration and fixed frequency within the timing signal and corresponding to the desired power level; and supplying the control signal to an input of a current switch connected to the electrical load to place the switch in one of an ON state during each pulse and an OFF state after each pulse to cause current to flow from a first potential to a second potential through the electrical load during the ON state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A FFFD power control circuit comprising:
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a first power potential; a second power potential; an electrical load; and a current switch connected to the electrical load and including an input to receive a current switch control signal to place the switch in one of an ON state and an OFF state including a timing cycle with a series of pulses of fixed duration and fixed frequency within the timing cycle to cause current to flow from the first potential to the second potential through the load during the ON state to cause the load to receive power over the timing cycle. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification