Power-Hardware-In-Loop harmonic analysis of a Smart Transformer-fed distribution grid

Carne, Giovanni De; Buticchi, Giampaolo; Kerekes, Tamás; Liserre, Marco

doi:10.1109/iecon.2016.7793426

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Three different types of PA are compared in [19], and their main characteristics classification are shown in Table 1. In the case of switched amplifiers, which are non-linear interface converters, it can be useful to know what considerations have been made by the authors in every test about the accuracy and stability of PHIL [99]. To give to the reader an overview of the most important PA included in the online database, the main PA manufacturers and the published papers where they were used are listed below:…”

Section: Power Amplifiermentioning

confidence: 99%

A Review of PHIL Testing for Smart Grids—Selection Guide, Classification and Online Database Analysis

et al. 2020

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The Smart Grid is one of the most important solutions to boost electricity sharing from renewable energy sources. Its implementation adds new functionalities to power systems, which increases the electric grid complexity. To ensure grid stability and security, systems need flexible methods in order to be tested in a safe and economical way. A promising test technique is Power Hardware-In-the-Loop (PHIL), which combines the flexibility of Hardware-In-the-Loop (HIL) technique with power exchange. However, the acquisition of PHIL components usually represents a great expense for laboratories and, therefore, the setting up of the experiment involves making hard decisions. This paper provides a complete guideline and useful new tools for laboratories in order to set PHIL facilities up efficiently. First, a PHIL system selection guide is presented, which describes the selection process steps and the main system characteristics needed to perform a PHIL test. Furthermore, a classification proposal containing the desirable information to be obtained from a PHIL test paper for reproducibility purposes is given. Finally, this classification was used to develop a PHIL test online database, which was analysed, and the main gathered information with some use cases and conclusions are shown.

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Section: Power Amplifiermentioning

confidence: 99%

A Review of PHIL Testing for Smart Grids—Selection Guide, Classification and Online Database Analysis

et al. 2020

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“…As mentioned in the literature [10], the choice of the interface algorithm is fundamental in the accuracy and stability of the P-HIL experiments. In [11], [12] a controlled Current-Type (C-CT) P-HIL interface algorithm is proposed for ST applications, due to the grid-forming characteristics of the ST at the LV dc/ac stage. In those studies, although a first accuracy and stability assessment has been provided, the analysis is based on empirical evaluation, without any comprehensive accuracy and stability investigation.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Current-Type P-HIL Interface Algorithm for Smart Transformers Testing

Pugliese

Liserre

Carne

2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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The energy systems are evolving towards the wide integration of power electronics-based technologies, such as electric vehicles. A promising solution to increase the grid controllability is represented by grid-forming converters, such as smart transformers (STs). Being a new technology, the ST experimental testing is a fundamental step before commercialization. Instead of performing time consuming and not flexible on-field tests, the Power Hardware In the Loop (P-HIL) offers a flexible testing environment for experimentally validating new technologies. The real time simulation of the electrical grid offers the possibility to vary quickly the testing environment, while the power amplification stage offers the validation of the real hardware. Despite the clear testing advantages, the P-HIL stability and testing accuracy is still a matter of study. This paper introduces a new P-HIL interface approach for ST application, that can guarantee high testing accuracy in a large frequency spectrum. The proposed approach combines the tracking capability of the existing controlled Current-Type P-HIL interface algorithm, with the well-known partial circuit duplication approach. The accuracy and stability analysis has been performed analytically and validated by means of extensive experimental P-HIL testing.

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