Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter

Díaz, Matías; Espinosa, Mauricio; Rojas, Félix; Wheeler, Pat; Cárdenas, Roberto

doi:10.1049/joe.2018.8028

Cited by 9 publications

(14 citation statements)

References 13 publications

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“…An additional transformation, referred to as Σ∆ transformation, can be applied to obtain a better representation of the circulating currents [23]. Additionally, the vector representation, proposed in [19,20], can be used to apply vector control strategies to regulate the floating capacitor voltages. In this work, the M 3 C dynamic model of the M 3 C is expressed in vector notation using the double αβ0-Σ∆ frame.…”

Section: Analysis Of the M 3 Cmentioning

confidence: 99%

“…The CCV-power model can be expressed as a function of the circulating currents and the common-mode voltage [19,20]:…”

Section: Power-ccv Model Of the M 3 Cmentioning

confidence: 99%

“…The rest of this paper is structured as follows: The modeling and control of the M 3 C are described in Sections 2, 3, and 4. Vector control systems are used to regulate the floating capacitor voltages as proposed in [19,20]. Simulation results considering a 10 MW model are included to validate the effectiveness of the proposed control strategies.…”

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confidence: 99%

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Control of a Modular Multilevel Matrix Converter for Unified Power Flow Controller Applications

et al. 2020

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The modular multilevel matrix converter has been proposed as a suitable option for high power applications such as flexible AC transmission systems. Among flexible AC transmission systems, the unified power flow controller stands out as the most versatile device. However, the application of the modular multilevel matrix converter has not been thoroughly analyzed for unified power flow controller applications due to the sophisticated control systems that are needed when its ports operate at equal frequencies. In this context, this paper presents a cascaded control structure for a modular multilevel matrix converter based unified power flow controller. The control is implemented in a decoupled reference frame, and it features proportional-integral external controllers and internal proportional multi-resonant controllers. Additionally, the input port of the modular multilevel matrix converter is regulated in grid-feeding mode, and the output port is regulated in grid-forming mode to provide power flow compensation. The effectiveness of the proposed vector control system is demonstrated through simulation studies and experimental validation tests conducted with a 27-cell 5 kW prototype.

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Section: Analysis Of the M 3 Cmentioning

confidence: 99%

“…The CCV-power model can be expressed as a function of the circulating currents and the common-mode voltage [19,20]:…”

Section: Power-ccv Model Of the M 3 Cmentioning

confidence: 99%

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Control of a Modular Multilevel Matrix Converter for Unified Power Flow Controller Applications

et al. 2020

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“…The vector representation of the Power-CCV model of the M 3 C has been proposed in [32,46,47]. The first step is to use vector notation for the cluster capacitor voltages and powers in Equations (38)-(41), as follows:…”

Section: Vector Power-ccv Modellingmentioning

confidence: 99%

“…Then, by applying the vector notation to Equations (38)-(45), the CCV-power model in Equation 37can be expressed as a function of the circulating current vectors i Σ∆ 1αβ and i Σ∆ 2αβ as well as the common-mode voltage v n according to the following four complex-valued dynamic equations [32,46,47]:…”

Section: Vector Power-ccv Modellingmentioning

confidence: 99%

An Overview of Modelling Techniques and Control Strategies for Modular Multilevel Matrix Converters

et al. 2020

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The Modular Multilevel Matrix Converter is a relatively new power converter topology appropriate for high-power Alternating Current (AC) to AC purposes. Several publications in the literature have highlighted the converter capabilities such as modularity, control flexibility, the possibility to include redundancy, and power quality. Nevertheless, the topology and control of this converter are relatively complex to design and implement, considering that the converter has a large number of cells and floating capacitors. Therefore multilayer nested control systems are required to maintain the capacitor voltage of each cell regulated within an acceptable range. There are no other review papers where the modelling, control systems and applications of the Modular Multilevel Matrix Converter are discussed. Hence, this paper aims to facilitate further research by presenting the technology related to the Modular Multilevel Matrix Converter, focusing on a comprehensive revision of the modelling and control strategies.

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Study, analysis, and development of a small‐scale AC‐AC modular multilevel converter for solid‐state transformer applications

Castellain

Brandt

Nascimento

et al. 2023

Circuit Theory & Apps

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The modular multilevel converter presents itself as a promising topology in medium voltage and high power applications due to its modular characteristic and flexibility in applications where DC-AC and AC-DC power conversion are required. Despite this, applications with electric traction present this topology in the AC-AC conversion due to the converter at the input of a solid-state transformer and the power system's single-phase characteristic at the converter's input. One of the main problems characteristic of this topology is the harmonic content present in the medium frequency converter output voltage due to its square waveform. Thus, the harmonic content in this voltage is high, increasing the losses and volume in the core of the medium frequency transformer. This paper presents a multilevel modulation scheme using two frequency components in the modulating wave to reduce the harmonic

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Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter

Cited by 9 publications

References 13 publications

Control of a Modular Multilevel Matrix Converter for Unified Power Flow Controller Applications

Control of a Modular Multilevel Matrix Converter for Unified Power Flow Controller Applications

An Overview of Modelling Techniques and Control Strategies for Modular Multilevel Matrix Converters

Study, analysis, and development of a small‐scale AC‐AC modular multilevel converter for solid‐state transformer applications

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