H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 7/02 (2006.01) H02J 7/04 (2006.01)
Patent
CA 2511929
According to a first aspect of the invention a battery charger and method of charging a battery includes an input circuit that receive an ac input having a period of T seconds and provides a do signal. A converter receives the first dc signal and provides a converter output across a dc bus having a peak voltage of V volts. An output circuit receives the dc signal and provides a battery charging signal having a power of P watts. A controllers controls the converter to provide power factor correction. A bus capacitor is connected across the dc bus and has a capacitance of at least (3PT)/(V2) farads, or a capacitance to store sufficient energy to maintain the available output power signal through the duration of mechanical transient. The capacitance may be at least (4PT)/(V2), (5PT)/(V2), or (5.5PT)/(V2). Multiple output circuits may be provided, connected either one at a time, or a number at a time.
Reynolds Jon O.
Stanzel David A.
Finlayson & Singlehurst
Illinois Tool Works Inc.
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