Model predictive control with improved discrete space vector modulation for three‐level Vienna rectifier

Zhu, Wenjie; Chen, Changsong; Duan, Shanxu

doi:10.1049/iet-pel.2019.0040

Cited by 21 publications

(22 citation statements)

References 24 publications

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“…To circumvent this limitation, the discrete space vector modulation-based (DSVM) FS-MPC techniques have been proposed in the literature. This generates a bigger vector set for optimization [15,16]. DSVM-FS-MPC applies multiple voltage vectors in a single switch cycle, thus creating a virtual vector space which can effectively suppress the harmonic content in current waveforms.…”

Section: Motivation and The State-of-the-artmentioning

confidence: 99%

A low‐complexity FS‐MPDPC with extended voltage set for grid‐connected converters

Dharmasena

Olowu

Sarwat

2021

IET Energy Syst Integration

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The conventional finite control set model predictive control (FS-MPC) for converter control is a well-studied area, but performance degradation due to the finite candidate vector set is still limiting its practical applications. Extending the voltage vector set using discrete space vector modulation has been proposed as a solution to overcome the limitations, but the brute-force search inherent to FS-MPC increases the computational complexity for a larger voltage set. This paper proposes a technique to alleviate the above issue by avoiding the brute-force search that is being executed in FS-MPC. The technique utilises the basics of direct-power-control theory to cut down the number of candidate voltage vectors applied in each cycle in the optimization problem. In this work, a design example having a voltage vector set of 37 elements is considered, and the proposed technique narrows down the search to eight optimal vectors. The proposed controller is specifically designed for active-reactive power control of a grid-connected converter that interlinks an energy storage system to the grid. The system is modelled in MATLAB Simulink environment and simulations are carried out to analyse the performance in all four active-reactive bidirectional power flow modes. Results validate the performance of the controller, both in steady-state and transient conditions. Further, the reduction in computational complexity due to the proposed algorithm is evaluated. It is observed that the number of computations was reduced approximately by 75% after applying the proposed algorithm for a system with a 37 voltage vector set.

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Section: Motivation and The State-of-the-artmentioning

confidence: 99%

A low‐complexity FS‐MPDPC with extended voltage set for grid‐connected converters

Dharmasena

Olowu

Sarwat

2021

IET Energy Syst Integration

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“…These virtual vectors can greatly increase the number of voltage vectors on the AC side, effectively reduce the error between the reference voltage vector and the synthesis target voltage vector, and improve the input current performance. The sector division based on 12-sector SVPWM is different from the traditional 6-sector division in that the real vectors and virtual vectors divide the operational sectors every 30°, so that the voltage vector space is divided into 12 sectors [18].…”

Section: A Principle Analysis Of 12-sector Svpwmmentioning

confidence: 99%

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

Zheng

et al. 2020

IEEE Access

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The three-phase/switch Y-type two-level rectifier is widely used in the unidirectional powerflowing applications such as LED illumination, communication and uninterruptible power supply. This paper presents the working principle of three-phase/switch Y-type two-level rectifier, and proposes two simple and fast modulation techniques (12-sector SVPWM and simplified equivalent SVPWM) based on the virtual vectors. The reference vectors of the 12-sector SVPWM are synthesized by utilizing real basic vectors and virtual vectors linearly combined from these real vectors in a switching period. So the created virtual vectors can reduce the error of reference voltage synthesis, contributing to better input current performance, this paper proposes a simplified 12-sector equivalent SVPWM, and shows the novel threephase modulation wave expressions and waveforms. The proposed simplified 12-sector equivalent SVPWM does not need the process of sector determination with reducing computational processing time which is attractive for digital implementation. Finally, performance of the proposed modulation methods for a Y-type two-level rectifier using a 5kW prototype is experimentally verified.

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“…The switching frequency is controlled by adjusting the carrier frequency, which reduces the harmonic content and improves the steady-state response time. The output voltage fluctuates greatly when switching loads.Literature [28] proposed a Vienna rectifier model predictive control strategy based on discrete space vector modulation (DSVM-MPC) to introduce virtual vectors to form a larger number of vector finite control sets to reduce the predicted voltage error and improve the quality of the input current waveform. But this algorithm is more sensitive to the system model parameters.In [29], a duty cycle model predictive direct power control method is proposed, which uses double vectors to control in two control intervals and uses redundant switching states to control midpoint potential fluctuations, reducing current harmonic content and improving the steady-state performance of the Vienna rectifier.…”

Section: Introductionmentioning

confidence: 99%

An Improved Sliding Mode Direct Power Control Strategy Based on Reactive Power Compensation for Vienna Rectifier

Wang

Huang

2022

IEEE Access

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Vienna rectifiers are widely used in electric vehicle charging systems, wind power generation systems and other fields due to their excellent high-voltage resistance, small size and high efficiency.Aiming at the problems of the Vienna rectifier's long response time, low anti-disturbance ability, and current zero-crossing distortion, a new sliding mode direct power control strategy based on disturbance compensation is proposed. Firstly, a model considering the uncertainty is established, and the neural network is used to estimate and compensate the uncertain disturbance. Secondly, aiming at the slow approach speed and slow system convergence of traditional control methods, a new approaching law sliding mode direct power control strategy is designed. Aiming at the current zero-crossing distortion, the reason is analyzed and a compensation method is proposed. Finally, simulations and experiments show that the proposed method has no voltage overshoot and converges faster, effectively improving the problem of different phases of voltage and current. The rectifier operates at unit power, has better steady-state performance and stronger anti-load disturbance ability. The current total harmonic distortion is controlled below 2%, and the current quality is effectively improved.

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Model predictive control with improved discrete space vector modulation for three‐level Vienna rectifier

Cited by 21 publications

References 24 publications

A low‐complexity FS‐MPDPC with extended voltage set for grid‐connected converters

A low‐complexity FS‐MPDPC with extended voltage set for grid‐connected converters

Research on the Simplified SVPWM for Three-Phase/Switches Y-Type Two-Level Rectifier

An Improved Sliding Mode Direct Power Control Strategy Based on Reactive Power Compensation for Vienna Rectifier

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