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US 2013/0076150 A1Published application
Acoustic Noise Modification in Power Converters
AssigneeGeneral Electric Company
InventorsRobert Gregory Wagoner, David Smith
Life of this patent
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Abstract
A boost converter including two or more inductors coupled to an input DC power source and to switches that can each be modulated with a modulation signal to control the output power of the boost converter. Two or more of the modulation signals have a relative phase other than 360° divided by the number of switches.
Claims20
A boost converter comprising:
- N inductors electrically connected to a power source;
- each of the N inductors further electrically connected to a corresponding switch, each of the switches electrically connected to an output of the boost converter;
- and,
- a boost converter controller providing pulse width modulation (PWM) signals to each of the switches,
- wherein at least two of the PWM signals are phase separated from each other by a phase other than 360° divided by N (2π/N radians).
2 more elements
A method comprising:
- determining N pulse width modulation (PWM) signals;
- and,
- providing the N PWM signals to a boost converter to output power from the boost converter,
- wherein at least two of the N PWM signals have a relative phase other than 360° divided by N.
1 more element
A power converter comprising:
- at least one power source providing power;
- a boost converter receiving the power from the at least one power source and outputting direct current (DC) power;
- an inverter receiving the DC power and outputting alternating current (AC) power;
- and,
- a grid coupling providing the AC power to a power grid,
- wherein the boost converter comprises:
- N inductors electrically connected to the power source;
- each of the N inductors further electrically connected to a corresponding switch, each of the switches electrically connected to an output of the boost converter;
- and,
- a boost converter controller providing pulse width modulation (PWM) signals to each of the switches,
- wherein at least two of the PWM signals are phase separated from each other by a phase other than 360° divided by N (2π/N radians).
8 more elements
Dependencies are inferred from the claim text.