Power factor improving converter and control method thereof

Details Power factor improving converter and control method thereof Power factor improving converter and control method thereof

2005-12-27

2005-12-27

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S041000, C363S046000, C323S246000, C323S284000

Reexamination Certificate

active

06980445

ABSTRACT:
A boost quantity detecting section (103) detects a boost quantity of an inductor (L11). An operational amplifier (113) of a control section (106) compares the boost quantity detected by the boost quantity detecting section (103) with a reference voltage (ES12). When a supply voltage supplied from an AC power source (100) reduces and an output voltage is unchanged, the boost quantity detected by the boost quantity detecting section (103) increases. When a signal level of a boost quantity detection signal is higher than the reference voltage (ES12), a control section (106) reduces a target level of a switching current. The target level of the switching current decreases, so that the output voltage decreases and energy loss due to boosting reduces.

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patent: 03-022865 (1991-01-01), None
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