Flexible and Efficient MMC Digital Twin Realized With Small-Scale Real-Time Simulators

Milovanović, Stefan; Polanco, Ignacio; Utvić, Milan; Dujić, Dražen

doi:10.1109/mpel.2021.3075803

Cited by 18 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, HIL simulators have been widely adopted for commissioning and testing of multilevel converters [30]. In current work, HIL tests have been performed using RT Box2 (Plexim) in the PLECS environment with sampling period 12.5µs.…”

Section: A Hardware-in-the-loop Implementation and Testsmentioning

confidence: 99%

A Novel Modular Multilevel Converter Based on Interleaved Half-Bridge Submodules

Viatkin

Ricco

Mandrioli

et al. 2023

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

A new Modular Multilevel Converter with Interleaved half-bridge Sub-Modules (ISM-MMC) is proposed in this paper. The ISM-MMC exhibits a higher modularity and scalability in terms of current ratings with respect to a conventional MMC, while preserves the typical voltage level adaptiveness. The ISM-MMC brings the known advantages of classical MMC to low-voltage, high-current applications making it a novel candidate for the sector of ultra-fast chargers for all types of electrical vehicles (EV). This advanced topology makes it possible to easily reach charging power of the EV charging system up to 4.5 MW and beyond with low-voltage supply. To operate the new converter, a hybrid modulation scheme that helps to exploit advantages of the interleaving scheme, is implemented, and explained in this paper. It has been verified that the typical MMC control methods are still applicable for ISM-MMC. A comparative study between classical MMC and ISM-MMC configurations in terms of output characteristics and efficiency is also given. Furthermore, it has been demonstrated that the number of ac voltage levels is synthetically multiplied by the number of interleaved halfbridge legs in submodules. Simulations, Hardware-in-the-Loop and Experimental tests are carried out to demonstrate the feasibility of the proposed topology and implemented modulation scheme.

show abstract

Section: A Hardware-in-the-loop Implementation and Testsmentioning

confidence: 99%

A Novel Modular Multilevel Converter Based on Interleaved Half-Bridge Submodules

Viatkin

Ricco

Mandrioli

et al. 2023

IEEE Trans. Ind. Electron.

View full text Add to dashboard Cite

show abstract

“…To facilitate the development of control concepts for the MMC, a real-time (RT) HIL simulator was developed within the laboratory, described in [30]. The control platform used in the MMC and RT HIL is based on ABB's AC 800PEC family of controllers, which aim at performing the top-level MMC control tasks, such as converter pre-charging, control of terminal voltages and currents, energy control, exchanging references and measurements with the SM, etc.…”

Section: Real-time Hil Simulator Descriptionmentioning

confidence: 99%

Direct Arm Energy Control of the Modular Multilevel Matrix Converter

2023

Self Cite

View full text Add to dashboard Cite

Modular multilevel matrix converter is a type of converter used in medium-voltage ac-ac power conversion. Controlling the energy content of the converter arms is a prerequisite for a proper converter operation, and at the same time a challenging control task. So far, there are several approaches presented in the literature that successfully deal with the challenge. However, almost all of them fail when it comes to the simplicity of implementation, and ease of understanding by control engineers and researchers entering the field. This paper extends the direct arm energy control concept, already introduced for the class of modular multilevel converters, to the modular multilevel matrix converter. Presented control approach is characterized by an intuitive and simple implementation, ability to control the arm energies to arbitrary values, and stable operation under all operating conditions, including grid imbalances. Validity of the control concept was demonstrated using an in-house-developed hardware-in-the-loop simulator of the modular multilevel matrix converter, with control algorithms being deployed to the industrial-grade controller.INDEX TERMS Modular multilevel converter, modular multilevel matrix converter, energy control, hardware-in-the-loop, ac-ac power conversion.

show abstract

“…The schematics of the HIL platform that is used in this paper is shown in Fig. 2 and is based on the interconnection of 10 RT Boxes to model the M3C, but shares the same control hardware as the setup used for IMMC described in [13] and [21]. One RT Box, hosting the input ac grid as well as the ac output application (ac machine or ac grid), will be referred to as Application RT Box.…”

Section: Description Of the Real-time Hil Systemmentioning

confidence: 99%

“…The implementation of the nine single branches on the nine Branch RT Boxes is done using the sub-cycle averaged model of the series connected FB cells without any loss of generality, as explained in [25] and used in [13]. While the use of sub-cycle averaged model does not interfere with the main purpose of the HIL, this being the verification of the control structure and algorithm, it makes the HIL simulations incompatible for converter loss calculations.…”

Section: A Branch Rt Boxmentioning

confidence: 99%

Distributed Real-Time Model of the M3C for HIL Systems Using Small-Scale Simulators

Bontemps¹,

Milovanović²,

Dujić³

2021

IEEE Open J. Power Electron.

Self Cite

View full text Add to dashboard Cite

Hardware-in-the-loop systems are an essential tool to verify controllers and deployed control algorithms in a risk-free environment. The inaccessibility of the converters used in applications such as pumped hydro storage power plants due to their high ratings, require the development of a hardware-in-the-loop platform to perform the validation of the deployed control structures and algorithms. This paper presents the modeling and splitting of the model of the matrix modular multilevel converter to allow the usage of small-scale simulators, such as the RT Boxes, to deal with the complex system exceeding capabilities of a single unit. To achieve an acceptable simulation step-size, this paper demonstrates the splitting of the model into multiple independent instances using the concept of virtual capacitance implementation. The verification of the proposed concept is done on a hardware-in-the-loop system compromising ten RT Boxes, where the physical model of the matrix modular multilevel converter is deployed, and control algorithms are implemented on the ABB PEC800 industrial controllers.

show abstract

Flexible and Efficient MMC Digital Twin Realized With Small-Scale Real-Time Simulators

Cited by 18 publications

References 10 publications

A Novel Modular Multilevel Converter Based on Interleaved Half-Bridge Submodules

A Novel Modular Multilevel Converter Based on Interleaved Half-Bridge Submodules

Direct Arm Energy Control of the Modular Multilevel Matrix Converter

Distributed Real-Time Model of the M3C for HIL Systems Using Small-Scale Simulators

Contact Info

Product

Resources

About