Synchronized PWM randomization for coordinated load management
First Claim
Patent Images
1. A method of controlling a power consuming device, said method comprising:
- receiving a control signal from a power supplying utility, the control signal signaling a beginning of a control period, the control period is generated using synchronized Pulse Width Modulation randomization;
determining a length of time to operate the power consuming device during the control period;
identifying an offset time;
calculating a forthcoming start time for operation of the power consuming device as a function of the beginning of the control period and the offset time;
calculating a forthcoming stop time for operation of the power consuming device as a function of the start time and the determined length of time to operate the power consuming device; and
controlling a duty cycle of the power consuming device based on at least the calculated offset time, start time and stop time.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of controlling a power consuming device includes receiving a control signal from a power supplying utility. The control signal signals a beginning of a control period. A length of time to operate the power consuming device during the control period is determined and an offset time is identified. A start time for operation of the power consuming device is identified as a function of the beginning of the control period and the offset time. A stop time for operation of the power consuming device is identified as a function of the start time and the determined length of time to operate the power consuming device.
-
Citations
20 Claims
-
1. A method of controlling a power consuming device, said method comprising:
-
receiving a control signal from a power supplying utility, the control signal signaling a beginning of a control period, the control period is generated using synchronized Pulse Width Modulation randomization; determining a length of time to operate the power consuming device during the control period; identifying an offset time; calculating a forthcoming start time for operation of the power consuming device as a function of the beginning of the control period and the offset time; calculating a forthcoming stop time for operation of the power consuming device as a function of the start time and the determined length of time to operate the power consuming device; and controlling a duty cycle of the power consuming device based on at least the calculated offset time, start time and stop time. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An apparatus for controlling operation of at least one power consuming device, said apparatus comprising:
-
an input for receiving a control signal from a power supplying utility; a processor coupled in communication with said input; a non-transitory computer readable medium coupled with said processor and containing instructions that, when executed by said processor, cause said processor to; receive a control signal from a power supplying utility via said input, the control signal signaling a beginning of a control period, the control period is generated using synchronized Pulse Width Modulation randomization; determine a length of time to operate a power consuming device during the control period; identify an offset time; and calculate a forthcoming start time for operation of the power consuming device as a function of the beginning of the control period and the offset time. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method of controlling power demand on a network using synchronized pulse width modulation (PWM) signals, said method comprising:
-
determining a demanded power target; transmitting a control signal to a plurality of customers, the control signal indicating the beginning of a control period, the control period is generated using synchronized Pulse Width Modulation randomization; transmitting a saturation signal to the plurality of customers, the saturation signal representing a power usage threshold for each customer during the control period, the saturation signal configured to limit a maximum duty cycle for operation of at least one power consuming device for the customer during the control period; monitoring power consumption on the network during the control period; and determining whether the monitored power consumption on the network is about equal to the demanded power target. - View Dependent Claims (17, 18, 19, 20)
-
Specification