Control of a medium-voltage test generator

Richter, Sebastian A.; Bloh, J. von; Dick, Christian; Hirschmann, D.; Doncker, Rik W. De

doi:10.1109/pesc.2008.4592545

Cited by 21 publications

(8 citation statements)

References 10 publications

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“…The power level of concept II (adopting SMPA) is reported at 200 kV•A in [62] and 7 mil V•A in [115]. The power level of concept IV is achieved at 1 mil V•A in [93].…”

Section: Power Level Testing Efficiency and Costmentioning

confidence: 98%

AC Grid Emulations for Advanced Testing of Grid-Connected Converters—An Overview

Wang

Cai

et al. 2021

IEEE Trans. Power Electron.

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High penetration of distributed generations and active loads have enabled the power electronics converter to become a vital component in the modern power grid system, and the broad employment of grid-connected converters at various power levels is making the grid impedance and characteristics complicated. Consequently, in order to validate more advanced features such as the reliability and stability performances of the grid-connected converters, it is becoming an emerging need to emulate the grid behaviors from more aspects. This article serves to foster and investigate the state-of-the-art techniques in the field of ac grid emulation from the perspective of multiple spatial-scales and multiple time-scales. Four major concepts used for grid emulation with featured principles, including concept I (analog simulation with under-scaled components), concept II (grid characteristics in the real-time simulator), concept III (grid characteristics in the converters structure), and concept IV (grid characteristics in the converters controller), are summarized, respectively, in this article. The practical implementation regarding to the circuit topology and the power supply for the grid emulation system are also discussed. Finally, the future trends and conclusions in the field of ac grid emulation are provided.

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“…The power level of concept II (adopting SMPA) is reported at 200 kV•A in [62] and 7 mil V•A in [115]. The power level of concept IV is achieved at 1 mil V•A in [93].…”

Section: Power Level Testing Efficiency and Costmentioning

confidence: 98%

AC Grid Emulations for Advanced Testing of Grid-Connected Converters—An Overview

Wang

Cai

et al. 2021

IEEE Trans. Power Electron.

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“…The dual-loop voltage control [25]- [27] and the singleloop voltage control [28] are usually adopted with grid emulators, which can also be applied to the MMC-based grid emulator, as shown in Fig. 4.…”

Section: A Voltage Controlmentioning

confidence: 99%

Testing Requirements and Control Strategies of Next-Generation Grid Emulator: A Review

Ponnaganti

Zhao

et al. 2022

2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)

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The power-electronic-based grid emulator has been widely used for grid-code compliance testing of wind turbines (WTs). To accommodate the increasing voltage and power levels of WTs, the modular multilevel converter (MMC) emerges as a promising approach for the future grid emulator. This paper provides an overview of testing requirements and control strategies for the MMC-based grid emulator. Specifications, challenges and solutions to implement expected control functionalities of the MMCbased grid emulator are discussed according to testing requirements of WTs. Emerging testing functionalities and future trends of grid emulators conclude this paper.

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“…The single-loop voltage control with active damping (AD) in αβ-frame is used for the grid emulator [11], as shown in Fig. 2, where Rcf is AD realized by the current feedforward control.…”

Section: A Control Scheme and Time-delay Indentificationmentioning

confidence: 99%

Passivity-Based Design for High-Order Harmonic Voltage Emulation of Grid Emulators

Zhao

Wang

2022

2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)

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The high-order (i.e., 50 th ~ 100 th ) harmonic voltage emulation is increasingly required for future grid emulators. To mitigate adverse control interactions between grid emulator and converter under test, this paper proposes a passivity-based design method for the harmonic resonant controllers of grid emulators. This method selects the phase compensation angles of resonant controllers based on the theory of constrained piecewise linear fitting. Compared to conventional passivity-based design, the proposed method avoids complicated mathematical derivations and achieves precise harmonic voltage control with the passive harmonic impedance till the critical frequency of voltage control loop. The effectiveness of the proposed method is validated by experimental results.

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Control of a medium-voltage test generator

Cited by 21 publications

References 10 publications

AC Grid Emulations for Advanced Testing of Grid-Connected Converters—An Overview

AC Grid Emulations for Advanced Testing of Grid-Connected Converters—An Overview

Testing Requirements and Control Strategies of Next-Generation Grid Emulator: A Review

Passivity-Based Design for High-Order Harmonic Voltage Emulation of Grid Emulators

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