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Electronic ballast with power factor compensation/correction (PFC) for discharge lamps and method for reducing harmonics during operation of such ballast, with specified capacitor (dis)charging
Electronic ballast with power factor compensation/correction (PFC) for discharge lamps and method for reducing harmonics during operation of such ballast, with specified capacitor (dis)charging
During operation of ballast for gas discharge lamp (LA) in one phase two capacitors (C2,C3) are charged in series with rectified mains voltage (UNETZ) and in further phase are discharged in parallel into an intermediate circuit .The circuit supplies inverter (DC/AC) for energizing a load circuit (LK), containing. the gas discharge lamp, whose power tapping is synchronously modulated to zero passages of mains voltage. Preferably, the rated value for power proportional magnitude of load circuit depends on actual value of intermediate voltage circuit (UR3). Independent claims are included for gas discharge lamp.
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机译:在气体放电灯镇流器(LA)的一相运行期间,两个电容器(C2,C3)用整流的市电电压(UNETZ)串联充电,并在另一相中并联放电到中间电路中。该电路为逆变器( DC / AC),用于为负载电路(LK)供电。气体放电灯,其功率抽头被同步调制为电源电压的零通道。优选地,负载电路的功率比例大小的额定值取决于中间电压电路(UR3)的实际值。气体放电灯包括独立权利要求。
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