Battery charger noise reduction by variable frequency
First Claim
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1. A method of charging a battery in a charging system having a power convertor that converts AC electrical power to DC electrical power, the method comprising:
- generating a carrier signal having a carrier frequency that continuously varies between a minimum carrier frequency value and a maximum carrier frequency value; and
operating a switching component of the power convertor using the carrier signal, wherein the switching component of the power convertor receives AC electrical power from a power source, converts the AC electrical power to DC electrical power, and supplies the DC electrical power to charge a battery.
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Abstract
A method of charging a battery in a charging system having a power convertor that converts AC electrical power to DC electrical power, the method comprising generating a carrier signal having a carrier frequency that continuously varies between a minimum carrier frequency value and a maximum carrier frequency value, and operating a switching component of the power convertor using the carrier signal.
25 Citations
20 Claims
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1. A method of charging a battery in a charging system having a power convertor that converts AC electrical power to DC electrical power, the method comprising:
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generating a carrier signal having a carrier frequency that continuously varies between a minimum carrier frequency value and a maximum carrier frequency value; and operating a switching component of the power convertor using the carrier signal, wherein the switching component of the power convertor receives AC electrical power from a power source, converts the AC electrical power to DC electrical power, and supplies the DC electrical power to charge a battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A battery charging apparatus having a power convertor that converts AC electrical power to DC electrical power, the apparatus comprising:
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a carrier signal generator that outputs a carrier signal having a carrier frequency that continuously varies between a minimum carrier frequency value and a maximum carrier frequency value; and one or more switching components that are operated by the carrier signal, wherein the one or more switching components of the power convertor receive AC electrical power from a power source, convert the AC electrical power to DC electrical power, and supply the DC electrical power to charge a battery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification