Single-stage full-bridge power factor correction(PFC)technique is all effective solution to eliminate the pollution produced by power electronic equipment.To restrain the DC.1ink voltage and reduce the voltage stress ...Single-stage full-bridge power factor correction(PFC)technique is all effective solution to eliminate the pollution produced by power electronic equipment.To restrain the DC.1ink voltage and reduce the voltage stress of the switches.an active power clamp circuit is used in this converter as shown in Fig 1.展开更多
Dimmers are very widely applied in theatres,cinemas,dancing-parties, auditoriums and signal systems.They are usually supplied by single-stage AC/AC converters in the past with voltage regulation technique with the dis...Dimmers are very widely applied in theatres,cinemas,dancing-parties, auditoriums and signal systems.They are usually supplied by single-stage AC/AC converters in the past with voltage regulation technique with the disadvantages of high total harmonic distortion,low power factor and poor power transfer efficiency.This paper introduces a novel method-DC-modulation that implements DC/DC conversion technology into AC/AC converters.The DC-modulated single-stage PFC AC/AC converters effectively improved the power factor up to 0.999 and the power transfer efficiency up to 97.8 %.The experimental results verified our design and calculation.This technique will be widely used in light dimming and other industrial applications.展开更多
文摘Single-stage full-bridge power factor correction(PFC)technique is all effective solution to eliminate the pollution produced by power electronic equipment.To restrain the DC.1ink voltage and reduce the voltage stress of the switches.an active power clamp circuit is used in this converter as shown in Fig 1.
文摘Dimmers are very widely applied in theatres,cinemas,dancing-parties, auditoriums and signal systems.They are usually supplied by single-stage AC/AC converters in the past with voltage regulation technique with the disadvantages of high total harmonic distortion,low power factor and poor power transfer efficiency.This paper introduces a novel method-DC-modulation that implements DC/DC conversion technology into AC/AC converters.The DC-modulated single-stage PFC AC/AC converters effectively improved the power factor up to 0.999 and the power transfer efficiency up to 97.8 %.The experimental results verified our design and calculation.This technique will be widely used in light dimming and other industrial applications.
