Dead Angle Reduction of Single - Stage PFC Using Controllable Coupled Inductors
作者： Mohammad Mehdi Tavassol , Hosein Farzanehfard , Ehsan Adib
关键词: Distortion 、 Control theory 、 Zero crossing 、 Reduction (complexity) 、 Power factor 、 Inductor 、 Flyback transformer 、 Engineering 、 Voltage 、 Line (electrical engineering)
摘要: This paper presents a new structure of single-stage flyback power factor correction (PFC) converter with controllable coupled negative magnetic feedback (NMF) winding. NMF winding is used to reduce the bulk capacitor voltage at high line voltages and light loads. However, it would cause current distortion zero crossing condition. In proposed circuit, series inductor eliminate low voltages. As result, dead angle input current, near crossing, eliminated increased. The presented experimental results PFC confirm integrity idea theoretical analysis.
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