Significant insights into the operation of DC-link voltage control of a shunt active power filter using different control algorithms: a comparative study

Rahman, Nor Farahaida Abdul; Radzi, Mohd Amran Mohd; Soh, Azura Che; Mariun, Norman; Rahim, Nasrudin Abd

doi:10.3906/elk-1504-17

Cited by 10 publications

(2 citation statements)

References 16 publications

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“…Let Kp and Ki set to 0.8 and 8, respectively, so that voltage drops in each capacitor, either in the transient or steady-state conditions, can be controlled. By adding all DC link capacitors, n = 6, which is the total DC link capacitor voltage used in CHB MLI SAPF [23]- [29].…”

Section: Self-tuning Filter (Stf)mentioning

confidence: 99%

Evaluation of CHB MLI based shunt APF using low pass filter and self-tuning filter

Yusup Lada,

Amran Mohd Radzi,

Jasni

et al. 2023

IJEECS

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The increasing demand for high-rating power supply in the distribution system causes the conventional inverter topology, six step voltage source inverter (SSVSI) unsuitable for being applied as active power filter (APF). Multilevel inverter (MLI) is generally the best suitable inverter for APF, but not all types of MLI can be used for high-voltage applications. Among the MLIs topology, cascaded H-bridge (CHB) is the best choice since it can produce output voltage more than twice the amount of DC source. Moreover, CHB MLI topology uses fewer power devices and is simple in design. Low pass filter (LPF) is a common method used for harmonic extraction in this controller. However, this method faces various problems, such as an additional need for phase lock loop (PLL) algorithm and slow transient and steady-state responses. Therefore, self-tuning filter (STF) is introduced as a new filtering method to overcome this problem. This paper evaluates CHB MLI's performance for APF using STF as a harmonic extraction. The model was developed and verified in MATLAB/Simulink. The results show that harmonic extraction using STF performs better total harmonic distortion (THD) than conventional LPF. Nevertheless, both algorithms produce THD below 5%, defined as the permissible value stated in IEEE 519.

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Section: Self-tuning Filter (Stf)mentioning

confidence: 99%

Evaluation of CHB MLI based shunt APF using low pass filter and self-tuning filter

Yusup Lada,

Amran Mohd Radzi,

Jasni

et al. 2023

IJEECS

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“…Current control, as the key to the APF design, directly bears on the precision of current compensation [14]. Traditionally, the APFs adopt the proportional-resonant (PR) strategy for current control.…”

Section: Introductionmentioning

confidence: 99%

Vector-Proportional-Integral Control of Inductor-Capacitor-Inductor Active Power Filter under the Alpha-Beta Stationary Coordinate System

Liu¹,

Zhou²,

Sai³

2020

EJEE

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The proportional-resonant (PR) controller is a traditional tool for current control. Due to the phase jump at the resonance point, the PR controller cannot compensate for the current in the inductor-capacitor-inductor (LCL)-based active power filter (APF) in a precise manner. To solve the problem, this paper puts forward a vector-proportional-integral (VPI) current control strategy, which relies on the VPI controller to compensate for the harmonic current of the n-th order under the alpha-beta (α-β) stationary coordinate system. Through theoretical analysis and contrastive experiment, it is learned that the closed-loop transfer function of the VPI controller satisfies 0dB of amplitude-frequency at the resonance point, and controls the phase response at the resonance frequency at 0°. Hence, the VPI strategy can track the harmonic current with no error, and thus fully compensate for the harmonic current. The proposed control strategy improves the current compensation precision of APFs, and provides a reference for enhancing the power quality of the grid.

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Harmonic Improvement of an Electrical Network–Connected Wind Energy System

Hafez,

Elbaset

2023

Power Quality Enhancement of Wind Energy Systems

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Significant insights into the operation of DC-link voltage control of a shunt active power filter using different control algorithms: a comparative study

Cited by 10 publications

References 16 publications

Evaluation of CHB MLI based shunt APF using low pass filter and self-tuning filter

Evaluation of CHB MLI based shunt APF using low pass filter and self-tuning filter

Vector-Proportional-Integral Control of Inductor-Capacitor-Inductor Active Power Filter under the Alpha-Beta Stationary Coordinate System

Harmonic Improvement of an Electrical Network–Connected Wind Energy System

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