POWER FACTOR CORRECTOR WITH HIGH POWER FACTOR AT LOW LOAD OR HIGH MAINS VOLTAGE CONDITIONS专利检索- 由检测系统电输入的偏差量从而控制系统中的一个设备以获得调定输出的电变量调节系统专利检索查询-专利查询网

POWER FACTOR CORRECTOR WITH HIGH POWER FACTOR AT LOW LOAD OR HIGH MAINS VOLTAGE CONDITIONS
申请号	PCT/IB2010056097	申请日	2010-12-28	公开(公告)号	WO2011080702A3	公开(公告)日	2011-08-25
申请人	NXP BV; HALBERSTADT HANS;			发明人	HALBERSTADT HANS;
摘要	A power factor corrector raises power factor at low loads or high mains voltages by modifying the switch timing or the current received by the power converter. It achieves this by increasing the switch -on time of a control switch during the falling time so that the majority of the switch -on time during a mains period occurs during the falling time, to thereby control the current received by the converter to compensate for current received by the intermediate filter. Some embodiments may employ a feedback system to produce one or more error signals that modify the control signal used to control the operation of the converter. Various embodiments may also include additional stages that limit the compensation range of the error signal.
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