Finite control set model predictive control with reduced switching frequency applied to multi-cell rectifiers

Espinosa, Eduardo; Rohten, Jaime; Silva, Fernando; Muñoz, Javier; Melín, Pedro

doi:10.1109/icit.2015.7125431

Cited by 10 publications

(4 citation statements)

References 25 publications

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“…To minimize the THD of the input current multicell AFE rectifier, the fundamental components of the input currents in each power cell [20] are shown in Figure 1b, where the phase shift angle α is responsible for minimizing the harmonics 17th and 19th in this case. Despite this, the magnitude 1 a p i is slightly www.videleaf.com different 2 a p i ; however 3 a p i , the AFE rectifiers work with equal active power.…”

Section: Topology and Harmonic Cancellationmentioning

confidence: 99%

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Finite Control Set—Model Predictive Control with Non-Spread Spectrum and Reduced Switching Frequency Applied to Multi-Cell Rectifiers †

Espinosa¹,

Espinoza²,

Melín³

et al. 2021

Advances in Energy Research

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Multi-cell converters are widely used in medium-voltage AC drives. This equipment is based on power cells that operate with low-voltage-rating semiconductors and require an input Advances in Energy Research: 3 rd Edition 3 www.videleaf.com multipulse transformer. This transformer cancels the lowfrequency current harmonics generated by the three-phase diodebased rectifier. Unfortunately, this transformer is bulky, heavy, expensive, and does not extend the existing power cell (threephase rectifier-Direct Current (DC) voltage-link-single-phase inverter) to the transformer. In this study, a harmonic cancelation method based on finite control set-model predictive control (FCS-MPC), extending the power cell's modularity to the input transformer. On the other hand, it considers treating the two disadvantages of the FCS-MPC: High switching frequency and spread spectrum. The details were developed in theory and practice to obtain satisfactory experimental results.

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Section: Topology and Harmonic Cancellationmentioning

confidence: 99%

“…This work evaluated the control scheme proposed in [20] based on FCS-MPC [21]. In this scheme, the use of a simple design input transformer (wye-wye) is proposed, where the input current control scheme minimizes the harmonics in each power cell.…”

Section: Introductionmentioning

confidence: 99%

Finite Control Set—Model Predictive Control with Non-Spread Spectrum and Reduced Switching Frequency Applied to Multi-Cell Rectifiers †

Espinosa¹,

Espinoza²,

Melín³

et al. 2021

Advances in Energy Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…These approaches rely on the prediction concept, but each employs distinct cost functions, leading to various performances, especially in situations where AC/DC converters are operating under distorted source voltage conditions. Thanks to the characteristics of containing several control objectives simultaneously in a predesigned cost function, MPC approaches can reduce the switching loss of an AC/DC converter by including the term related to the number of switching actions or power loss [23,24]. However, these approaches require a proper weighting factor to guarantee the control variables.…”

Section: Introductionmentioning

confidence: 99%

Model Predictive Virtual Flux Control Method for Low Switching Loss Performance in Three-Phase AC/DC Pulse-width-Modulated Converters

Nguyen,

Kwak,

Choi

2024

Machines

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Three-phase AC/DC pulse-width-modulated (PWM) converters have been widely employed in various renewable energy systems and industrial applications, which require a high-efficiency power converter operation. This article proposes a technique to reduce switching loss in AC/DC converters by integrating a voltage vector preselection strategy to model predictive virtual flux control. The voltage vector preselection strategy preselects available voltage vectors corresponding to switching states that lead to minimum switching loss in the phase leg, which conducts the highest current. By using preselected voltage vectors, clamping intervals are generated at every fundamental period to maintain the present switching states of the power switches, resulting in the reduction in switching loss. Additionally, by using virtual flux control, the proposed approach can effectively be used under both ideal and distorted source voltage conditions. The proposed method is compared with the conventional model predictive current control and the conventional model predictive virtual flux control. Both a simulation and experiment are performed to validate the correctness and effectiveness of the proposed method, which has been found to decrease the switching loss of an AC/DC converter by up to 15% compared to conventional control schemes at a negligible increase in the input current total harmonic distortion and DC output voltage ripple.

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“…However, the DPWM technique can lead to a decline in the performance of the PWM rectifier. Due to the feature of including multiple control variables at the same time in a cost function, these MPC schemes can minimize switching loss thanks to additional terms associated with switching frequency or power loss [15,16]. Nevertheless, these methods necessitate an appropriate weighting factor selection to ensure the control objective.…”

Section: Introductionmentioning

confidence: 99%

High-Efficient Direct Power Control Scheme Using Predictive Virtual Flux for Three-Phase Active Rectifiers

Nguyen,

Kwak,

Choi

2024

Machines

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In recent years, the pulse-width-modulation (PWM) converter has been found to have extensive applications in renewable energy, industrial fields, and others. The high efficiency requirement is crucial to operating a PWM rectifier in various applications, in addition to the fundamental control objectives of sinusoidal grid currents and the correct DC bus voltage. Additionally, in practical application, another issue arises when the grid voltage frequently experiences distortion, leading to a distorted grid current and a significant rise in total harmonic distortion (THD). To resolve these problems, a model predictive virtual flux-based direct power control (MPVFDPC) with improved power loss performance is proposed based on an integrated switching state predetermination strategy. The proposed MPVFDPC for PWM rectifier inherits the merits of both virtual flux control and direct power control, which have fast dynamic performance and the grid current THD is considerably decreased under distorted grid voltage states. The proposed technique aims to minimize switching loss under ideal and distorted grid voltage states by exploiting the discontinuous modulation concept by using a switching state predetermination strategy. The MPVFDPC with switching state predetermination strategy is proven by employing it in experiments as well as simulations in comparison with previous models: predictive direct power control (Conv. MPDPC) and conventional MPVFDPC (Conv. MPVFDPC). The acquired waveforms and quantitative data are employed to prove the effectiveness of the developed algorithm.

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Finite control set model predictive control with reduced switching frequency applied to multi-cell rectifiers

Cited by 10 publications

References 25 publications

Finite Control Set—Model Predictive Control with Non-Spread Spectrum and Reduced Switching Frequency Applied to Multi-Cell Rectifiers †

Finite Control Set—Model Predictive Control with Non-Spread Spectrum and Reduced Switching Frequency Applied to Multi-Cell Rectifiers †

Model Predictive Virtual Flux Control Method for Low Switching Loss Performance in Three-Phase AC/DC Pulse-width-Modulated Converters

High-Efficient Direct Power Control Scheme Using Predictive Virtual Flux for Three-Phase Active Rectifiers

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