EPE Association: EPE 2015 - DS3e: Power Factor Correction Techniques

EPE 2015 - DS3e: Power Factor Correction Techniques
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 02: Power Converter Topologies and Design > EPE 2015 - DS3e: Power Factor Correction Techniques

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   A Novel Bridgeless PFC Boost Rectifier with a Simple ZVS Circuit
By Takae SHIMADA [View]
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Abstract: A power-factor-correction (PFC) rectifier using a novel circuit topology and its control method was developed and tested. To reduce both conduction and switching losses, the proposed circuit is based on a bridgeless PFC boost rectifier with a zero-voltage-switching (ZVS) function. To achieve ZVS, the proposed circuit topology employs a simple auxiliary circuit consisting of one MOSFET, one inductor, and one capacitor. The auxiliary MOSFET is simply driven alternately with the main MOSFETs. The results of testing demonstrated that all three switching devices can be switched under ZVS. A 1-kW prototype rectifier attained an input power factor of 99\%. Moreover, at switching frequency of 100 kHz, the proposed prototype reduced loss by 16\% compared to a conventional-bridgeless prototype.

   EMI DM Filter Volume Minimization for a PFC Boost Converter Including Boost Inductor Variation and MF EMI Limits
By Jonas WYSS [View]
[Download]

Abstract: For the AC-DC conversion in drive systems, Power Factor Correction (PFC) converters are widely usedas they can ensure a high power factor. The EMI filters that are needed for meeting grid regulationshave a considerable impact on the total converter volume. In this paper, a method to optimize an EMIfilter stage of a PFC converter with respect to volume, is investigated. It includes the optimal choice ofthe boost inductance value, as it has a big impact on both the converter and the EMI filter design. Inaddition, different damping topologies are investigated and compared with each other. It is shown that incomparison to a boost inductance value so that the boost inductor current ripple is set to 15 \% of the inputcurrent, an optimal boost inductance value reduces the total volume of EMI filter and boost inductor upto 17 \%.

   Performance/Efficiency Analysis for High Efficiency Three-Phase Buck-Type PFC Rectifiers
By Valeriu OLARESCU [View]
[Download]

Abstract: One major research topic in the PFC rectifiers area is represented by efficiency improving methods, while maintaining the unity power factor. In this paper, the single stage PFC rectifiers, namely the SWISS and 8-switch topologies, are investigated. New control strategy for the 8-switch rectifier proposed in [7] is introduced. Further, an interleaved switching strategy that enables cancellation of the AC-side input current harmonics reduction of DC-side voltage ripple is proposed for the two single stage PFC rectifiers. Performance of the interleaved SWISS and interleaved 8-switch PFC rectifiers, respectively for the SWISS and 8-switch PFC rectifiers is evaluated for various power ranges, based on simulation studies in GECKO Circuits environment. Efficiency evaluation is also provided. Higher power efficiency, than for the standard current source rectifier solutions they are based on, is assured.

EPE 2015 - DS3e: Power Factor Correction Techniques
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 02: Power Converter Topologies and Design > EPE 2015 - DS3e: Power Factor Correction Techniques
	[return to parent folder]

	A Novel Bridgeless PFC Boost Rectifier with a Simple ZVS Circuit By Takae SHIMADA	[View] [Download]
Abstract: A power-factor-correction (PFC) rectifier using a novel circuit topology and its control method was developed and tested. To reduce both conduction and switching losses, the proposed circuit is based on a bridgeless PFC boost rectifier with a zero-voltage-switching (ZVS) function. To achieve ZVS, the proposed circuit topology employs a simple auxiliary circuit consisting of one MOSFET, one inductor, and one capacitor. The auxiliary MOSFET is simply driven alternately with the main MOSFETs. The results of testing demonstrated that all three switching devices can be switched under ZVS. A 1-kW prototype rectifier attained an input power factor of 99\%. Moreover, at switching frequency of 100 kHz, the proposed prototype reduced loss by 16\% compared to a conventional-bridgeless prototype.

	EMI DM Filter Volume Minimization for a PFC Boost Converter Including Boost Inductor Variation and MF EMI Limits By Jonas WYSS	[View] [Download]
Abstract: For the AC-DC conversion in drive systems, Power Factor Correction (PFC) converters are widely usedas they can ensure a high power factor. The EMI filters that are needed for meeting grid regulationshave a considerable impact on the total converter volume. In this paper, a method to optimize an EMIfilter stage of a PFC converter with respect to volume, is investigated. It includes the optimal choice ofthe boost inductance value, as it has a big impact on both the converter and the EMI filter design. Inaddition, different damping topologies are investigated and compared with each other. It is shown that incomparison to a boost inductance value so that the boost inductor current ripple is set to 15 \% of the inputcurrent, an optimal boost inductance value reduces the total volume of EMI filter and boost inductor upto 17 \%.

	Performance/Efficiency Analysis for High Efficiency Three-Phase Buck-Type PFC Rectifiers By Valeriu OLARESCU	[View] [Download]
Abstract: One major research topic in the PFC rectifiers area is represented by efficiency improving methods, while maintaining the unity power factor. In this paper, the single stage PFC rectifiers, namely the SWISS and 8-switch topologies, are investigated. New control strategy for the 8-switch rectifier proposed in [7] is introduced. Further, an interleaved switching strategy that enables cancellation of the AC-side input current harmonics reduction of DC-side voltage ripple is proposed for the two single stage PFC rectifiers. Performance of the interleaved SWISS and interleaved 8-switch PFC rectifiers, respectively for the SWISS and 8-switch PFC rectifiers is evaluated for various power ranges, based on simulation studies in GECKO Circuits environment. Efficiency evaluation is also provided. Higher power efficiency, than for the standard current source rectifier solutions they are based on, is assured.