A fast-response high power factor converter with a single power stage

Kheraluwala, M.H.; Steigerwald, R.L.; Gurumoorthy, R.

doi:10.1109/pesc.1991.162763

Cited by 133 publications

(26 citation statements)

References 3 publications

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“…Fig. 1 (b) presents Category 1 switching regulators [4]- [8]. In this category, the output power is completely controlled by the voltage regulator (converter 2).…”

Section: Power Flow Diagramsmentioning

confidence: 99%

“…Recently, motivated by an efficiency concern, non-cascading structures have been considered for constructing PFC switching regulators. Essentially, non-cascading structures prevent double processing of power by the two essential stages and hence reduce the overall power loss [4]- [17]. While such non-cascading structures allow efficiency to be improved, they present several unsolved design problems relating to the optimization among a few basic performances, namely, power factor, load transient response, and efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The first category permits tradeoff between efficiency and input current harmonic contents, the second permits tradeoff between efficiency and load transient response, and the third allows tradeoffs among all performance areas. We will take a brief literature survey of the noncascading PFC switching regulators [4]- [17] and then focus on the performance analysis of the the various categories of structures. Finally, we present simulation experimental results to illustrate the performance tradeoffs in these PFC switching regulators.…”

Section: Introductionmentioning

confidence: 99%

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Performance considerations of PFC switching regulators based on non-cascading structures

Cheung

Chow

Tse

2006

2006 37th IEEE Power Electronics Specialists Conference

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Abstract-This paper discusses the characteristics of powerfactor-correction (PFC) switching regulators of non-cascading structures in terms of efficiency, input current harmonic distortion, and load transient response. The discussion begins with simplified power flow diagrams of the non-cascading PFC switching regulators and describes their essential features for achieving power factor correction and tight voltage regulation. Based on these diagrams, the various configurations of switching regulators can be classified into three categories, each offering a different possibility of performance tradeoffs. The first category permits tradeoff between efficiency and input current harmonic contents, the second permits tradeoff between efficiency and load transient response, and the third allows tradeoffs among all performance areas. The paper briefly reviews the non-cascading structures of PFC switching regulators in terms of the three categories. Simulation and experimental results are provided to illustrate the performance tradeoffs in these PFC switching regulators.

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“…Fig. 1 (b) presents Category 1 switching regulators [4]- [8]. In this category, the output power is completely controlled by the voltage regulator (converter 2).…”

Section: Power Flow Diagramsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance considerations of PFC switching regulators based on non-cascading structures

Cheung

Chow

Tse

2006

2006 37th IEEE Power Electronics Specialists Conference

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“…A straight-forward construction involves a simple zero-order switching network followed by a switching regulator [12][13][14][15][16]. shows the block diagram of such a circuit.…”

Section: Switching Regulators With Power Factor Correction-conventionmentioning

confidence: 99%

“…One of these is the conventional cascade conÿguration in which a PFC stage is cascading with a dc=dc converter stage [3][4][5][12][13][14][15][16]. The other 15 have non-cascading structures which, as shown above, have a higher e ciency compared to the cascade conÿguration.…”

Section: Derivation Of Practical Pfc Voltage Regulator Circuits With mentioning

confidence: 99%

Circuit theory of power factor correction in switching converters

Tse

2003

Circuit Theory & Apps

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SUMMARYThis paper discusses the circuit theory aspects of power factor correction in switching converter circuits. The discussion begins with an examination of the requirement of power factor correction in dc=dc converters. Using the concept of zero-order converter circuits, su cient conditions for a dc=dc converter circuit to provide power factor correction are derived. The duality principle is applied to generate new converter circuits that can achieve power factor correction. The practical application of power factor correction is considered in conjunction with the requirement of tight output voltage regulation. Detailed study of the circuit conÿguration that can simultaneously provide power factor correction and output regulation is given. Based on a general three-port model, the voltage regulator with power factor correction capability is studied in terms of the power ow between the input port, output port and energy storage port. A detailed consideration of the power ow among the three ports leads to the derivation of all possible minimal conÿgurations that can achieve power factor correction and voltage regulation. The e ciencies of these minimal conÿgurations are studied theoretically, leading to the concept of 'reduced redundant power processing' which provides important clue to e ciency improvement. Another issue addressed in this paper is the synthesis of practical circuits that can provide power factor correction and output regulation. In particular, four practical minimal conÿgurations that achieve reduced redundant power processing are considered. A systematic synthesis procedure is derived for creating converter circuits that achieve power factor correction and output voltage regulation. The control issue is also investigated in depth, pinpointing the basic requirement on the number of control parameters needed and its relationship with the operating mode.

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High power factor operation of resonant converters on the utility line

Bhat

Belaguli

1997

Sadhana

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Operation and characteristics of resonant converters on the utility line are presented. Series-parallel (LCC-type) resonant converter operating with discontinuous current mode and continuous current mode (variable frequency control as well as fixed-frequency) are considered. Design examples are presented. SPICE simulation and experimental results obtained for the designed converters (rated at 150 W) are presented to verify the theory. It is shown that high line power factor (>0.95) and line current total harmonic distortion (THD) of <25% are obtained for the LCC-type converter for a wide load range (from full load to 10% rated load) without any active control, and the switch peak current decreases with the load current. With active line current control, low distortion and zero voltage switching for the entire cycle are realized.

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A fast-response high power factor converter with a single power stage

Cited by 133 publications

References 3 publications

Performance considerations of PFC switching regulators based on non-cascading structures

Performance considerations of PFC switching regulators based on non-cascading structures

Circuit theory of power factor correction in switching converters

High power factor operation of resonant converters on the utility line

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