Dynamic Limits of a Power-Factor Preregulator

Fernández, Arturo; Sebastián, J.; Villegas, P.; Hernando, M.M.; Lamar, Diego G.

doi:10.1109/tie.2004.841136

Cited by 46 publications

(30 citation statements)

References 5 publications

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“…9 reveals that the two results are closely matched for a load stepping between 100 W and 200 W. The output voltage dynamics are further investigated under the influence of different dc gains (G) of the feedback circuit and different RC time constants of the output circuit for a sinusoidal input current and an imperfect sinusoidal input current, respectively. In both cases, we keep the time constant τ of the feedback circuit five times longer than the ac mains cycle in order to maintain a low input current distortion [1], [2], [7]- [9]. Fig.…”

Section: Effects Of Imperfect Sinusoidal Input Current On Outputmentioning

confidence: 99%

“…It also shows that increasing G generally improves the static output voltage regulation for both types of input current. Nevertheless, increasing G also causes extra input current harmonics [7] and can lead to instability problem in the pre-regulator [16]. These problems become more severe for the sinusoidal input current.…”

Section: Effects Of Imperfect Sinusoidal Input Current On Outputmentioning

confidence: 99%

“…To maintain a very low harmonic current distortion, the input current of PFC pre-regulators is generally controlled to be sinusoidal and in phase with the input voltage. The consequence is that the output voltage of PFC pre-regulators inevitably contains a second-harmonic (100 Hz or 120 Hz) voltage ripple [6], [7], and that the dynamic response of the pre-regulator becomes sluggish due to the placement of a very low frequency pole in the output voltage control loop [8], [9]. However, most international standards of harmonic current emissions limits, such as IEC 61000-3-2 [10], do allow a small amount of input current harmonics, and it is therefore unnecessary to achieve perfect sinusoidal input current.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Imperfect Sinusoidal Input Currents on the Performance of a Boost PFC Pre-Regulator

Cheung¹,

Chow

Lai

et al. 2012

Journal of Power Electronics

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This paper investigates the effects of applying different input current waveshapes on the performance of a continuous-conduction-mode (CCM) power-factor-correction (PFC) boost pre-regulator. It is found that the output voltage ripple of the pre-regulator can be reduced if the input current is modified to include controlled amount of higher order harmonics. This finding allows us to balance the performance of output regulation and the harmonic current emission when coming to the design of the pre-regulator. An experimental PFC boost pre-regulator prototype is constructed to verify the analysis and show the benefit of the pre-regulator operating with input current containing higher order harmonics.

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Section: Effects Of Imperfect Sinusoidal Input Current On Outputmentioning

confidence: 99%

Section: Effects Of Imperfect Sinusoidal Input Current On Outputmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Imperfect Sinusoidal Input Currents on the Performance of a Boost PFC Pre-Regulator

Cheung¹,

Chow

Lai

et al. 2012

Journal of Power Electronics

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show abstract

“…For maintaining a high power factor, the pre-regulators can only provide a slow power transient response and the bandwidth of this response is about one-fifth of the ac mains frequency [20], therefore the buffer energy stored in the storage element becomes a critical parameter in the load transient view point. The energy stored in the storage elements is presented by…”

Section: B Category 2 Pfc Switching Regulatorsmentioning

confidence: 99%

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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“…Actually, many systems, such as PFC rectifiers demand large signal modeling and analysis. The nonlinear time-varying nature of a system does not allow linearization of the equations needed to design rectifier averaged current controllers for most converter topologies [3]. There are few major shortcomings to linear analyses of PFC rectifiers.…”

Section: Introductionmentioning

confidence: 99%

Piecewise Affine Control Design for Power Factor Correction Rectifiers

Tahami

Poshtkouhi²,

Ahmadian³

2011

Journal of Power Electronics

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Single-phase power factor correction (PFC) converter circuits are non-linear systems due to the contribution of their multiplier. This non-linearity causes difficulties in analysis and design. Models that reduce the system to a linear system involve considerable approximation, and produce results that are susceptible to instability problems. In this paper a piecewise affine (PWA) system is introduced for describing the nonlinear averaged model. Then robust output feedback controllers are established in terms of the linear matrix inequality (LMI). Simulation and experiments results show the effectiveness of the proposed control method.

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Dynamic Limits of a Power-Factor Preregulator

Cited by 46 publications

References 5 publications

Effects of Imperfect Sinusoidal Input Currents on the Performance of a Boost PFC Pre-Regulator

Effects of Imperfect Sinusoidal Input Currents on the Performance of a Boost PFC Pre-Regulator

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

Piecewise Affine Control Design for Power Factor Correction Rectifiers

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