DSP implementation of a single-cycle predictive current controller in a boost PFC rectifier

Athalye, P.; Maksimović, Dragan; Erickson, Robert W.

doi:10.1109/apec.2005.1453077

Cited by 16 publications

(4 citation statements)

References 8 publications

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“…But the same problem of duty cycle calculation in each cycle was an issue. Feed-forward control is also used for power factor correction in [14] for removing the input current zero crossing distortion. Feed-forward control strategy for buckboost PFC is used in this article, focusing mainly on Continuous Conduction Mode CCM, to achieve high power factor and less distortion in current with efficient current distribution amongst parallel connected converters.…”

Section: Problemsmentioning

confidence: 99%

Feed-Forward Control Method for Digital Power Factor Correction in Parallel Connected Buck-Boost Converter (CCM Mode)

Javed

Vandevelde

Belie

2020

2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)

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Amongst power converters, rectifiers are needed by many devices that are connected at the distribution end of AC electrical power networks. When large capacitors are used to reduce the voltage ripple at the dc output, the line current becomes non-sinusoidal. Such non-sinusoidal line currents increase the total harmonic distortion, resulting in significant power losses within the power network. The power factor correction converter or PFC converter is a well-known alternative to generate a flat dc voltage while shaping the input current to the input ac grid voltage, emulating a resistive behavior. As the parallel connection of PFC converters is a promising way to achieve a higher power rating, questions arise on balancing the current and power over these connected converters. In this paper, based on the differential equations of a buck-boost converter, a method is obtained to compute the duty cycles of the semiconductor devices aimed at obtaining the unity power factor while balancing the current. Feed-forward algorithms are used to tune the model parameters in order to strongly reduce the input current harmonics. The proposed scheme is simulated in MATLAB and results are given showing that the proposed algorithms result in a good power factor correction.

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Section: Problemsmentioning

confidence: 99%

Feed-Forward Control Method for Digital Power Factor Correction in Parallel Connected Buck-Boost Converter (CCM Mode)

Javed

Vandevelde

Belie

2020

2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)

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“…By using (4), (8) and (9), the duty ratio using the conventional voltage feedforward term can be written in (10). In a similar manner, the duty ratio using the proposed IIC feedforward term can be written in (11).…”

Section: A Derivation Of the Iic Feedforward Controlmentioning

confidence: 99%

Input Impedance and Current Feedforward Control of Single-Phase Boost PFC Converters

Park¹,

Park²,

Bazzi³

2015

Journal of Power Electronics

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The combination of voltage feedforward and feedback control is a conventional approach for correcting the power factor in single-phase ac-dc boost converters. The feedback duty ratio increases significantly with an increase of the line frequency and input inductance. Therefore, the performance of the conventional approach is highly dependent on the bandwidth of the feedback controller. As a result, the input power quality can be significantly exacerbated due to uncompensated duty ratios if the feedback controller is limited. This paper proposes an input impedance and current feedforward control method to reduce the control portion of the feedback controller. The findings in this paper are 1) the theoretical derivation and analysis of variations of line frequency and input inductance on a power factor correction approach, 2) guaranteed consistent performance in a wide range of conditions, and 3) that a low switching frequency can be utilized by the proposed method. A MATLAB/Simulink model and a 1.2kW dual boost converter are built to demonstrate the effectiveness of the proposed method.

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“…Digital controllers present some advantages from analog ones, such as flexibility, low sensitivity from the process and variability of the parameters, the capability to implement complex controls and the possibility to embed them into other digital systems [6][7][8][9][10][11]. Power factor correction is not an exception to this tendency and many digital controls have been implemented using DSPs and FPGA in order to improve their performance, up to the point of avoiding the sampling of some converter variables [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Digital Loss-Free Resistor for power factor correction applications

Marcos-Pastor

Vidal-Idiarte

Cid-Pastor

et al. 2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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The synthesis of a Digital Loss-Free Resistor (DLFR) based on a boost converter in Pulse-Width-Modulation (PWM) operation is presented. The proposed control law is obtained by applying discrete-time sliding mode control theory on the discrete-time model of the boost converter to control the input current. The control law calculates the duration of the switch on-time at the beginning of each switching period in order to reach the proposed discrete-time sliding surface. The resulting digital Loss-Free Resistor (DLFR) can be used as a preregulator for power factor correction in one-phase circuits. Simulations are in good agreement with theoretical predictions.

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DSP implementation of a single-cycle predictive current controller in a boost PFC rectifier

Cited by 16 publications

References 8 publications

Feed-Forward Control Method for Digital Power Factor Correction in Parallel Connected Buck-Boost Converter (CCM Mode)

Feed-Forward Control Method for Digital Power Factor Correction in Parallel Connected Buck-Boost Converter (CCM Mode)

Input Impedance and Current Feedforward Control of Single-Phase Boost PFC Converters

Digital Loss-Free Resistor for power factor correction applications

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