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Straightforward predictive direct power control for grid-connected ANPC inverter with flying capacitor voltage self-balancing

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MEASUREMENT & control 2024年

作者： Quang, Nguyen Khanh Anh, Nguyen Kim Binh, Ngo Van Quang Univ Danang Univ Sci & Technol Fac Elect Engn Da Nang Vietnam Hue Univ Univ Educ Fac Phys Hue Thua Thien Hue Vietnam

Improving control quality in inverter systems has attracted considerable attention, particularly in multilevel inverters for high-power applications. This study suggests a straightforward predictive direct power control system for a five-level Active Neutral Point Clamped inverter connected to the grid. The proposed method offers the benefit of reducing the heavy computational load by implementing a two-stage optimization process for the objective function. In contrast to the conventional finite control set model predictive control which involves comprehensive searches for all possible switching configurations within the iterative optimization process, the suggested approach focuses only on potential voltage vectors based on the desired inverter voltage's location at the initial stage. Second, the self-balancing flying capacitor voltages are guaranteed by employing the duplicative switching states. Another advantage of the presented algorithm is an obviation of numerous selecting weighting factors. The effectiveness of the advanced strategy is confirmed through extensive comparative simulation and hardware-in-the-loop studies conducted in both conditions during stable states and transitions. Contrasted to the previous technique, this innovative method demonstrates an improvement in the grid's power ripple and total harmonic distortion of the current by 14.66% and 19.58%. Furthermore, the computational time required for this method is significantly reduced by 64.58%, and 61.36% correlate to the traditional and other approaches, respectively. These results may facilitate the implementation of an effective control approach for multilevel inverters, employing a cost-effective control platform by a limited sampling interval.

关键词： finite control set model predictive control active neutral point clamped inverter flying capacitor voltage balancing neutral point voltage power control

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Lyapunov-Induced model predictive Power control for Grid-Tie Three-Level Neutral-Point-Clamped Inverter With Dead-Time Compensation

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IEEE ACCESS 2019年 7卷 166869-166882页

作者： Van-Quang-Binh Ngo Van-Hiep Vu Viet-Tuan Pham Huu-Nhan Nguyen Rodriguez-Ayerbe, Pedro Olaru, Sorin Hoang-Thinh Do Duy Tan Univ Inst Res & Dev Da Nang 550000 Vietnam Hue Univ Univ Educ Fac Phys Thua Thien Hue 530000 Vietnam Nguyen Tat Thanh Univ NTT Hitech Inst Ho Chi Minh City 70000 Vietnam Univ Paris Sud Paris Saclay Univ CNRS Cent SupelecL2S F-91192 Gif Sur Yvette France Ton Duc Thang Univ Inst Computat Sci Div Computat Mechatron Ho Chi Minh City 758307 Vietnam Ton Duc Thang Univ Fac Elect & Elect Engn Ho Chi Minh City 758307 Vietnam

In this paper, a new power control strategy based on a model predictive power control for the grid-tie three-level neutral point clamped inverter is presented. A dynamical model based on the orientation of grid voltage is used to predict the performance of control variables required for the system. A cost function that includes the tracking power ability, the neutral-point voltage balancing and switching frequency reduction is used to achieve the optimal switching state. A proposed selection scheme of control input is introduced to comprehend the stability of the closed-loop system and reduce the computational cost. At each sampling time, only candidate switching state inputs that guarantee the stability condition through a control Lyapunov function is evaluated in the cost function of the MPC algorithm. Thus, the execution time is remarkably decreased by 26% in comparison with traditional model predictive control. Moreover, the dead-time effect is compensated by incorporating its influence in the proposed prediction model. Simulation and experimental results compared with the traditional model predictive control are used to confirm the effectiveness of the proposed scheme.

关键词： Computational burden control Lyapunov function dead-time compensation finite control set model predictive control stability conditions three-level neutral-point-clamped inverter

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control of grid-connected converter based on model prediction control under unbalanced grid voltage

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The Journal of Engineering 2018年第13期2017卷 1129-1133页

作者： Lifan Niu Zhen Xie Hui Yang Xing Zhang School of Electrical Engineering and Automation Hefei University of Technology Hefei People's Republic of China

Due to the asymmetry of load, the ageing of transmission line, the asymmetry of power grid voltage and so on, grid-connected converter often appears grid voltage unbalance at the point of common coupling. Especially for some high-power grid-connected converter device, if the unbalanced conditions is ignored, it will produce non-characteristic harmonics, three-phase grid current unbalance and so on that will affect the stable operation of grid-connected converter, even ruin it. Therefore, it is necessary to study the control of grid-connected converter under unbalanced grid voltage. In view of the advantages of model predictive control in high-power converter, the control of grid-connected converter under unbalanced grid voltage based on finite control set model predictive control is studied. The goal is to control the three-phase grid current balance and enhance the stability operation of the grid-connected converter under unbalanced grid voltage. The grid-connected converter is modelled in two-phase stationary ( αβ ) coordinate system, and the model predictive control of grid-connected converter is deduced under unbalanced grid voltage. Based on the theoretical analysis, the simulation results show the effectiveness of the proposed control strategy.

关键词： power convertors power grids voltage control electric current control predictive control stability αβ coordinate system two-phase stationary coordinate system stability operation three-phase grid current balance control finite control set model predictive control three-phase grid current unbalance noncharacteristic harmonics high-power grid-connected converter device point of common coupling power grid voltage asymmetry transmission line ageing load asymmetry unbalanced grid voltage grid-connected converter control

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Indirect predictive control Strategy with Mitigation of Input Filter Resonances for a Direct Matrix Converter

Indirect Predictive Control Strategy with Mitigation of Inpu...

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CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

作者： Rivera, M. Di, Z. Zhang, J. Wheeler, P. Univ Talca Fac Engn Curico Chile Northwestern Polytech Univ Sch Marine Sci & Tech Xian Shaanxi Peoples R China Univ Nottingham Dept E&E Engn Nottingham England

ISBN: (纸本)9781538631232

In this paper an indirect model predictive current control strategy is proposed. The proposed method simplifies the computational cost while avoiding the use of weighting factors. Weighting factors are an issue for model predictive control in a direct matrix converter due to the large number of available switching states and necessity to control both input and output sides of the converter.

关键词： active damping current control matrix converters predictive control finite control set model predictive control fictitious dc-link

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predictive direct control strategy of unified power quality conditioner based on power angle control

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INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 2024年 156卷

作者： Wang, Guifeng Wu, Zewen Liu, Zhan Jiangsu Normal Univ Sch Elect Engn & Automat Xuzhou 221116 Peoples R China

The unified power quality conditioner (UPQC), based on power angle control (PAC), addresses the power distribution issue and enhances equipment utilization between two active power filters (APF) of UPQC by employing conventional linear control algorithms that have complex control structures and exhibit challenges in adjusting controller parameters and control delays. This study proposes a UPQC predictive direct control strategy based on power angle control (PDCS-PAC). We combine the direct control strategy with the finite control set model predictive control (FCS-MPC) to establish the UPQC finite set model predictive direct control system model in the dq coordinate system. This approach simplifies the controller structure and alleviates the control algorithm's complexity. Based on a detailed analysis of the PAC mechanism, an instantaneous power angle determination method is proposed based on the reactive power equalization technique, and a predictive direct control strategy given the current generation mechanism is constructed for the series and shunt sides of the UPQC, considering the active power balance of the UPQC system and the principle of constant load fundamental voltage amplitude. Finally, we construct a simulation platform and a laboratory prototype to validate the feasibility and efficacy of the proposed control strategy.

关键词： finite control set model predictive control Power angle control Power quality Unified power quality conditioner Power coordination Reactive power compensation

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Fixed Frequency model predictive control with Active Damping for an Indirect Matrix Converter

Fixed Frequency Model Predictive Control with Active Damping...

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CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

作者： Rivera, M. Amirbande, M. Vahedi, A. Tarisciotti, L. Wheeler, P. Univ Talca Fac Engn Curico Chile Iran Univ Sci & Technol Sch Elect Engn Tehran Iran Univ Nottingham Dept Elect & Elect Engn Nottingham England

ISBN: (纸本)9781538631232

The classic model predictive control presents a variable switching frequency which could produce resonances in the input filter of the matrix converter, affecting the performance of the system. In this paper a model predictive control strategy is proposed with fixed switching frequency operation which is enhanced with an active damping method in order to mitigate resonances of the input filter. The operation at fixed switching frequency is accomplished by emulating space vector modulation using predictive control and the active damping method consists in emulating a virtual resistor in parallel to the filter's capacitor. Simulated results confirm the feasibility of the proposal demonstrating that the performance of the system is improved ensuring sinusoidal source and load currents with a reduction of the harmonic distortion produced by the filter resonance.

关键词： current control matrix converters predictive control finite control set model predictive control fictitious dc-link

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predictive control Strategies for an Indirect Matrix Converter Operating at Fixed Switching Frequency

Predictive Control Strategies for an Indirect Matrix Convert...

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CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

作者： Rivera, M. Nasir, U. Tarisciotti, L. Wheeler, P. Dragicevic, T. Blaabjerg, F. Univ Talca Fac Engn Curico Chile Univ Nottingham Dept Elect & Elect Engn Nottingham England Aalborg Univ Dept Energy Technol Aalborg Denmark

ISBN: (纸本)9781538631232

The classic model predictive control presents a variable switching frequency which could produce high ripple in the controlled waveforms or resonances in the input filter of the matrix converter, affecting the performance of the system. This paper presents two model predictive control strategies with fixed switching frequency operation which allow a better performance of the system. The operation at fixed switching frequency is accomplished by emulating space vector modulation using predictive control. Simulated results confirm the feasibility of the proposal demonstrating that the performance of the system is improved ensuring sinusoidal source and load currents with a reduced harmonic distortion of the controlled variables.

关键词： active damping current control matrix converters predictive control finite control set model predictive control fictitious dc-link

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predictive control of an Indirect Matrix Converter Operating at Fixed Switching Frequency and Without Weighting Factors

Predictive Control of an Indirect Matrix Converter Operating...

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International Symposium on Industrial Electronics

作者： M. Rivera L. Tarisciotti P. Wheeler P. Zanchetta Dep. of Industrial Technologies Universidad de Talca Curicó Chile Dep. of Electrical and Electronic Engineering University of Nottingham Nottingham UK

ISBN: (纸本)9781467375559

In this paper a predictive control technique for an indirect matrix converter is proposed. The control strategy allows the output current control and the instantaneous reactive input power minimization of the converter without any weighting factor in the controller and, at the same time, the operation at fixed switching frequency. Simulation results validate the proposal under both steady and transient states.

关键词： current control matrix converters predictive control finite control set model predictive control

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Improved Active Power Filter Performance for Distribution Systems with Renewable Generation

Improved Active Power Filter Performance for Distribution Sy...

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Annual Conference on IEEE Industrial Electronics Society

作者： P. Acuna L. Moran M. Rivera J. Rodriguez J. Dixon Dep. of Electrical Engineering Univ. de Concepcion Dep. of Electronics Engineering Univ. Tecnica Federico Santa Maria Dep. of Electrical Engineering Pontificia Univ. Catolica de Chile

ISBN: (纸本)9781467324199

A predictive control algorithm specially developed for shunt active power filters aimed to compensate reactive power and current harmonics components is presented and analyzed. The proposed predictive control algorithm is implemented in a three-phase four-leg voltage-source inverter (4L-VSI). The use of a 4L-VSI allows the compensation of current harmonics, reactive power and neutral current harmonics generated by single-phase non-linear loads. A detailed mathematical model of the filter, including the effect of the power system equivalent impedance is derived and used to design the proposed predictive control algorithm. The proposed active power filter and associated control scheme performance and compensation effectiveness are demonstrated by simulation and with experimental results.

关键词： Active power filter Current control finite control set model predictive control Four-leg inverters

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MPC based controller Design of Battery Integrated Modular Multilevel Converter

MPC based Controller Design of Battery Integrated Modular Mu...

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第40届中国控制会议

作者： Fang Xu Zhongyi Guo Qifang Liu Hong Chen Yali Qu State Key Laboratory of Automotive Simulation and Control Jilin University College of Communication Engineering Jilin University Department of control science and engineering Tongji University Huawei Technologies Co. Ltd.

The control performance of converter directly affects the drive efficiency of electric vehicle（EV）.This paper studies on the model predictive control（MPC） based controller design of battery integrated modular multilevel converter（B-MMC）.Aiming at the goal of three-phase current tracking and battery balancing control of B-MMC,three-layer controllers are *** first controller is the finite control set model predictive control（FCS-MPC）,which realizes the motor drive by tracking the phase *** second controller is the circulation controller for the active balance control of *** is composed of multiple proportional controllers to realize the battery balance between the bridge *** third controller is the battery sorting algorithm to achieve the passive balance control of the battery in the same bridge *** the same time,field programmable gate array（FPGA） is used to accelerate the controller to meet the real-time requirements of ***,the simulation results of the B-MMC control system validates the effectiveness of the control algorithm.

关键词： Electric Vehicle Battery Integrated Modular Multilevel Converter finite control set model predictive control Field Programmable Gate Array

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