Novel sinusoidal converters with high power factor

Nabae, Akira; Nakano, Hirotami; Arai, Sei

doi:10.1109/ias.1994.377506

Cited by 25 publications

(15 citation statements)

References 9 publications

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“…This is desirable due to the current stress level at full load operation [4]. Appling this in (4), the average currents can be found:…”

Section: Inductor Designmentioning

confidence: 98%

“…For single-phase operation the capacitor voltages are equal to v G /2 [4]. Table I, from which some conclusions can be made: (a) the THD deteriorates for the lowest power and for lowest output voltage; (b) the better harmonic behavior occurs for the highest output voltage and for duty cycles equal to 0.49 and 0.4, of which the last one is the better; (c) for high power operation, i.e.…”

Section: Inductor Designmentioning

confidence: 99%

“…The proposed rectifier improves the input power factor without any intrincate PWM switching strategy, while reducing the component ratings and eliminating the reverse recovery losses. Besides this, such rectifier is free from input rush current [5] and differently from its basic version in [4] it can operate with variable load at constant switching frequency. Also, the proposed rectifier is suitable to be used in integrated topologies similarly to the single phase rectifier in [6] [7], and to the single or three phase distributed generation systems in [8].…”

Section: Introductionmentioning

confidence: 98%

“…1, which has been conceived from the two-level rectifier presented by Nabae in [4]. The proposed rectifier improves the input power factor without any intrincate PWM switching strategy, while reducing the component ratings and eliminating the reverse recovery losses.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A High Power Factor Three-Phase Three-Level Rectifier

Bento

Almeida

Oliveira

et al. 2007

2007 IEEE Power Electronics Specialists Conference

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Multilevel power converters have received much attention in recent years due to their high power and high voltage capability. However, a drawback of that structure is its large number of power devices and complexity of the control circuit. This paper proposes an inexpensive three-level three-phase rectifier, which improves the mains power factor and is free from inrush current; and from diode reverse recuperation and turn-on losses as well. The proposed rectifier employs only one three-level leg that operates at both constant switching frequency and constant duty cycle. Also, the proposed rectifier allows sharing the three-level leg, which makes it suitable for topology integration. The performance of the proposed rectifier is verified by theoretical analysis, and simulation and experimental results.

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“…This is desirable due to the current stress level at full load operation [4]. Appling this in (4), the average currents can be found:…”

Section: Inductor Designmentioning

confidence: 98%

Section: Inductor Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A High Power Factor Three-Phase Three-Level Rectifier

Bento

Almeida

Oliveira

et al. 2007

2007 IEEE Power Electronics Specialists Conference

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“…An advantage of this PFC technique over most single-stage solutions based on DCM operation is that the current through the input filter inductor, L f , is in continuous conduction mode (CCM) with a current ripple of twice the switching frequency, which allows a significant reduction of size and weight of the filtering element. This is possible through the complementary operation of the chargepump circuits, which is analogous to the interleaved boost converter [5], [6]. In addition, inductors L in1 and L in2 can be coupled, eliminating the necessity of inductor L f and reducing two magnetic cores from the circuit.…”

Section: Proposed Convertermentioning

confidence: 99%

A single-stage power factor correction switched mode power supply

Postiglione

Perín

Nascimento

2007

2007 European Conference on Power Electronics and Applications

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This paper presents a single-stage power factor corrected ac-dc converter based on a half-bridge topology. The proposed converter make use of the charge-pump and interleaving techniques resulting in near unity power factor and ripple free input current, meeting the IEC 61000-3-2 regulations for wide-load ranges. It is also a cost effective and competitive solution for 100 -600 W applications where a two stage approach is costly and passive filters are not recommended. It works with zero voltage switching (ZVS) for a reasonable load variation range, achieving higher efficiency at higher load conditions. To overcome the excessive elevation of the Dc-link voltage in lower load situations, a common problem of single-stage PFC solutions, frequency variation and PWM control are used simultaneously.

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