Digital Control for Improved Efficiency and Reduced Harmonic Distortion over Wide Load Range in Boost PFC Rectifiers

Chen, Fu-Zen; Maksimović, Dragan

doi:10.1109/apec.2009.4802747

Cited by 29 publications

(9 citation statements)

References 14 publications

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“…The first-stage is flyback converter whose input voltage is AC 110-220 V, output power is 50 W (32 V/1.56 A), and the ST L6562 [9][10][11] is used as controller. The second-stage is boost converter whose output power is 40 W, and using the PIC 18F4520 to control.…”

Section: Resultsmentioning

confidence: 99%

Design and Implementation of High Power Factor LED Driver with Hot Swap, Smart Output Voltage Regulation and Dimming Control

Wu¹,

Huang²

2013

JEPE

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In this paper, a high power factor LED driver with hot swap, smart output voltage regulation and dimming control is proposed. The dimming control is used to change LED brightness. During converter is working, the hot swap function supply users to remove and insert LED module. The smart output voltage can regulate quickly and rightly output voltage in different number of LED series connection. The system consists two stages, one is 50 W flyback converter which is used as power factor corrector, it is input source is 110-220 V, PF (power factor) is about 0.994. The other is Boost DC/DC converter, it can offer 35-60 V of output voltage. Finally, a prototype has been built and tested. The simulation and experimental results are shown to verify the feasibility of the proposed method.

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Section: Resultsmentioning

confidence: 99%

Design and Implementation of High Power Factor LED Driver with Hot Swap, Smart Output Voltage Regulation and Dimming Control

Wu¹,

Huang²

2013

JEPE

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“…An external circuit is used to distinguish the working mode, so it has an option to use the CCM or DCM control algorithm and hence a good input current has been achieved [10]. To confirm the system's operating mode, the sampled current and duty cycle are modified by adding the coil and hardware circuit [11]. Two current loops as well as the integrator and comparator in the digital signal processor are used to determine the system's working mode, using the software [12].…”

Section: Introductionmentioning

confidence: 99%

Non‐linear control of a boost PFC converter with a small inductor based on feedforward correction and frequency variation

Song

Liu

Yang

et al. 2022

IET Power Electronics

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To reduce total harmonic distortion (THD) and improve the power factor (PF) of a boost power factor correction (PFC) converter, here, the authors propose a non‐linear control algorithm that includes the feedforward correction (FC) algorithm in the continuous conduction mode (CCM) and the non‐linear frequency variation (FV) algorithm in the mixed conduction mode (MCM). The proposed FC algorithm achieves current out of distortion through zero crossing with a lower current loop bandwidth. The proposed non‐linear FV algorithm achieves high PF and low THD under minimal load conditions. The non‐linear FV algorithm comprises a third harmonic extraction algorithm, a harmonic control loop for reducing THD and a frequency production algorithm. By using this non‐linear FV algorithm, the inductor size is reduced, which leads to lower cost and also achieves better THD and PF. The proposed algorithms are verified experimentally in terms of current tracking, current THD, PF, heating and loss on a 2000‐W boost PFC converter hardware prototype.

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“…[12][13][14][15] Predictive control combined with a DCM detection circuit is used to make up for degraded current by identifying the DCM period. 16 New current predictive controller under DCM operation cooperates with the original predictive controller under CCM operation in the light of operation mode detection algorithm. 17 Additionally, the conduction mode can be detected by two methods to match the appropriate predictive control (CCM or DCM algorithm).…”

Section: Introductionmentioning

confidence: 99%

Cascaded model‐free predictive control for single‐phase boost power factor correction converters

Zhang

et al. 2021

Intl J Robust & Nonlinear

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Conventionally, the dual-loop PI controllers are designed for the single-phase boost power factor correction (PFC) converters operating under continuous conduction mode (CCM), which is not available to perform rapid adaptations to plant uncertainties caused by the different operation modes and the parameter variations. In order to improve the control performance and robustness, a cascaded model-free predictive control (MFPC) scheme is proposed based on the unified ultra-local model under CCM and discontinuous conduction mode (DCM) for the single-phase boost power factor correctors. Different from the traditional sluggish PI controllers, the proposed control law is adaptive to the operation mode and sudden variations with the algebraic identification technique, thus providing high-quality line current and fast dynamic characteristic for the full power operating range. Comparative simulations and experiments with PI control scheme are provided to certificate the effectiveness of the proposed control scheme.

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Digital Control for Improved Efficiency and Reduced Harmonic Distortion over Wide Load Range in Boost PFC Rectifiers

Cited by 29 publications

References 14 publications

Design and Implementation of High Power Factor LED Driver with Hot Swap, Smart Output Voltage Regulation and Dimming Control

Design and Implementation of High Power Factor LED Driver with Hot Swap, Smart Output Voltage Regulation and Dimming Control

Non‐linear control of a boost PFC converter with a small inductor based on feedforward correction and frequency variation

Cascaded model‐free predictive control for single‐phase boost power factor correction converters

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