Finite Control Set Model Predictive Control With Floating Virtual Voltage Vectors for Grid-Connected Voltage Source Converter

Falkowski, Piotr; Sikorski, Andrzej; Malinowski, Mariusz

doi:10.1109/tpel.2021.3067602

Cited by 15 publications

(9 citation statements)

References 39 publications

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“…In spite of the many applications reported of FCS-MPC in power converters, open questions about these controllers remain. For instance, the issue of weighting factor selection [3], [4], switching frequency limitation/fixing [5], spread spectrum of electrical variables, stability issues, and computational complexity, just to name a few, are worthy of further VOLUME X, 2022 study. In addition, the theoretical aspect of the behavior of these controllers is difficult when compared to the traditional schemes, which justifies the study of its behavior to gain intuitive understanding of their application.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, three-phase AFE rectifiers are a widely used power conversion topology and building block [5], [12]. These converters are used in many applications such as ac drives, renewable energy interfaces, active filters, just to name a few [13], [14].…”

Section: Introductionmentioning

confidence: 99%

“…Recent developments of FCS-MPC in AFE rectifiers include improving its switching frequency behavior [5], [13], [17], current quality [5], and the study of the system operation under unbalanced/distorted grid voltages [18], [19]. In these last two works, even sensorless operation, which do not require grid voltage sensors, has been considered.…”

Section: Introductionmentioning

confidence: 99%

“…To address the variable switching frequency and improve the current quality, [5] proposes a virtual vector approach with a predictive current controller in a dq reference frame. The method uses a current-based cost function, where three additional virtual voltage vectors are evaluated, in addition to the basic and reference ones.…”

Section: Introductionmentioning

confidence: 99%

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A Predictive Shortest-Horizon Voltage Control Algorithm for Non-Minimum Phase Three-Phase Rectifiers

et al. 2022

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Three-phase active front end rectifiers are a widely used power topology in applications such as renewable energy interfaces and motor drives, among many others. Its control is usually performed by a cascade combination of linear controllers which must be properly tuned for correct operation, and which depend on the operating point and system parameters. These family of controllers place inherent limits on the system dynamic response. On the other hand, the predictive control approach has been proposed as an alternative technique for these converters due to its fast dynamic response, simple concept, flexibility, multiple objective capability, among other desirable properties. In the case of power converter applications, short prediction horizons are usually used due to computational limitations. However, when short horizons are considered, the non-minimum phase characteristic of the rectifier voltage response can introduce stability issues, as its direct inversion is not possible without jeopardizing it. Indeed, this may lead to voltage regulation loss, and in the worst case, overcurrents that could damage the converter. To overcome such problem, this paper proposes a new concept for a predictive horizon one voltage controller for gridconnected three-phase active front end rectifiers. The proposal is based on the minimum and non-minimum phase plant factorization concept and the use of different sampling periods, to prevent the direct inversion of the non-minimum phase voltage dynamic. Simulated and experimental results are included and show its correct operation, even with a horizon one predictive voltage controller, thus ensuring the fastest response of the system for a given sampling time.INDEX TERMS Active front end rectifier, model predictive control, non-minimum phase, voltage control.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Predictive Shortest-Horizon Voltage Control Algorithm for Non-Minimum Phase Three-Phase Rectifiers

et al. 2022

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“…To alleviate the issue of variable switching frequency in direct MPC, researchers in [20] opted to use a band-stop filter to shape the harmonic spectrum of the current controller. Works such as [21], [22] opted to improve upon the voltage resolution of the FCSMPC scheme through the concept of virtual voltage vectors (VVVs). These methods aim to provide a larger pool of candidate voltage vectors (VVs) for evaluation, thus assuring a fixed switching frequency.…”

Section: Introductionmentioning

confidence: 99%

A Generalized Analytical Tuning Approach for Model Predictive Controlled Grid-Tied Converters Under Wide Range of Grid Inductance Variation

et al. 2022

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In medium-high power applications, the LCL is the preferred filter topology to attain efficient power conversion. The filter provides a high damping attenuation of -60 dB/decade above the resonance frequency at the cost of a higher order plant, complex parameter design, and, increased vulnerability to un-modeled disturbances. Recently, model predictive control applied to power electronic converters has experienced great interest from researchers. The technique is tailored to the control of complex MIMO systems such as the LCL filter as it allows simultaneous regulation of several state-variables via a user defined cost function. However, the tuning of weighting factors (WFs) within the cost function is not trivial, and in most cases employs an empirical procedure. This paper presents an analytical procedure for tuning of WFs for indirect model predictive current controlled grid-tied converters. The method is based on using analytical closed-form expressions, that relate closed-loop poles of the filter with WFs via physical plant parameters. The presented expressions generalize the tuning of WFs to any arbitrary LCL design. The proposed method is validated by hardware-in-the-loop simulations conducted on PLECS RTBOX 3. Through experimental testing, it is shown that the controller is robust against a wide range of grid impedance variation.

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Nonlinear current control strategy for grid-connected voltage source converters

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Leão

et al. 2022

International Journal of Electrical Power & Energy Systems

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Finite Control Set Model Predictive Control With Floating Virtual Voltage Vectors for Grid-Connected Voltage Source Converter

Cited by 15 publications

References 39 publications

A Predictive Shortest-Horizon Voltage Control Algorithm for Non-Minimum Phase Three-Phase Rectifiers

A Predictive Shortest-Horizon Voltage Control Algorithm for Non-Minimum Phase Three-Phase Rectifiers

A Generalized Analytical Tuning Approach for Model Predictive Controlled Grid-Tied Converters Under Wide Range of Grid Inductance Variation

Nonlinear current control strategy for grid-connected voltage source converters

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