Finite-Time Adaptive Fuzzy Control for Three-Phase PWM Rectifiers With Improved Output Performance

Fu, Cheng; Zhang, Chenghui; Zhang, Guanguan; Su, Qijun

doi:10.1109/tcsii.2023.3252603

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…The B8 rectifier utilizes double the switch number of the B4 rectifier, however, the lower voltage-rating semiconductor devices have lower on-state resistance. The ratio between conduction losses of the B8 rectifier and the B4 rectifier, for the same load, is defined by (18), which shows a 14% reduction in conduction losses for the B8 rectifier, as lower voltage-rating devices are deployed.…”

Section: B Model Predictive Current Controllermentioning

confidence: 99%

“…To improve the AFER dynamic response, a predictive short-horizon control approach is proposed in [17]. In [18], finite-time adaptive fuzzy control is proposed to improve AFER performance, where the control approach estimates and compensates for load disturbances and system uncertainties. A fractional order linear active disturbance rejection controller is discussed in [19] replacing the conventional proportional-integral (PI) controller, thus enhancing the current tracking performance.…”

Section: Introductionmentioning

confidence: 99%

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Two-Leg Neutral-Point Diode-Clamped Active Front-End Rectifier

Abdel-Aziz,

Elgenedy,

Williams

2024

IEEE J. Emerg. Sel. Topics Power Electron.

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Active front-end boost rectifiers can replace the uncontrolled diode bridge rectifiers for ac-dc conversion offering high power quality with near unity power factor. The four-switch, B4, topology is gaining interest, either as an inverter or a rectifier, where each switch should withstand the full dc link voltage. Higher voltage-rated power semiconductor devices not only imply slower response with lower overall efficiency but also higher cost and size. Thus, multilevel inverters become a viable solution. This paper investigates a two-leg neutral-point diode-clamped B8 rectifier allowing the series connection of fast, efficient, and low voltage rating switches. The proposed rectifier has better performance and efficiency than the B4 rectifier. Only two inductors instead of three are required. Model predictive current control (MPCC) is developed for accurate current tracking. A model of the proposed rectifier is detailed for the implementation of MPCC. The concept is validated by simulation and experimentation.

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Section: B Model Predictive Current Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-Leg Neutral-Point Diode-Clamped Active Front-End Rectifier

Abdel-Aziz,

Elgenedy,

Williams

2024

IEEE J. Emerg. Sel. Topics Power Electron.

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“…In this context, the primary control objectives of rectifiers are to maintain a stable DC bus voltage for the DC load, operate at a unity power factor, and draw grid current with minimal harmonic distortion. However, PWM rectifiers are inherently nonlinear, multivariable, and coupled systems [2], and their control performances are susceptible to practical disturbances such as DC load disturbances and mismatched parameters (parameter disturbances). Therefore, anti-disturbance control strategies for rectifiers have garnered significant attention in recent years [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Currently, three-phase PWM rectifiers typically use a dual-loop control structure consisting of a voltage outer loop and a current inner loop [2]. Linear proportional-integral (PI) controllers are commonly used in this structure because of their simple structure and ease of engineering implementation.…”

Section: Introductionmentioning

confidence: 99%

Discrete-Time Adaptive Control for Three-Phase PWM Rectifier

Hou,

Qi,

2024

Sensors

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This paper proposes a dual-loop discrete-time adaptive control (DDAC) method for three-phase PWM rectifiers, which considers inductance-parameter-mismatched and DC load disturbances. A discrete-time model of the three-phase PWM rectifier is established using the forward Euler discretization method, and a dual-loop discrete-time feedback linearization control (DDFLC) is given. Based on the DDFLC, the DDAC is designed. Firstly, an adaptive inductance disturbance observer (AIDO) based on the gradient descent method is proposed in the current control loop. The AIDO is used to estimate lump disturbances caused by mismatched inductance parameters and then compensate for these disturbances in the current controller, ensuring its strong robustness to inductance parameters. Secondly, a load parameter adaptive law (LPAL) based on the discrete-time Lyapunov theory is proposed for the voltage control loop. The LPAL estimates the DC load parameter in real time and subsequently adjusts it in the voltage controller, achieving DC load adaptability. Finally, simulation and experimental results show that the DDAC exhibits better steady and dynamic performances, less current harmonic content than the DDFLC and the dual-loop discrete-time PI control (DDPIC), and a stronger robustness to inductance parameters and DC load disturbances.

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