Low-cost input impedance estimator of Dc-to-Dc converters for designing the control loop in cascaded converters

Sanz, M.; Lázaro, A.; Bermejo, Marta; Moral, D. López del; Zumel, P.; Fernández, Camino; Barrado, A.

doi:10.1109/apec.2016.7468305

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…In order to analyze the stability of the system in the considered operating conditions, the proposed reduced-order model has been considered. Stability analysis has been carried out using the GMPM criterion on the open-loop transfer function considering the PHIL effects TOpenLoop given by (5). As it can be seen in Fig.…”

Section: A Test 1: Lc-filter and Convertermentioning

confidence: 99%

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Reduced-Order Model of Power Converters to Optimize Power Hardware-In-the-Loop Technology in Dc-Distributed Systems

Sanz

Santamargarita

Huerta

et al. 2020

2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

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The Power Hardware-In-the-Loop (PHIL) technology provides a powerful tool for testing scenarios where there is a high-power interchange, in which the performance of field tests can be very complex or expensive. When performing PHIL simulations of systems with a high number of components, such as DC-distributed systems on a ship or aircraft, the use of switched or average models of the converters can require the use of expensive commercial real-time digital simulators (RTDS) reducing the advantages of these technology. This paper is focused on the proposal of a reduced order model of converters to be able to perform PHIL analysis of Dc-distributed systems using low resources of the required real-time digital simulator. The paper validates that the proposed reduced-order model is able to determine the stability on the Dc-distributed system in comparison with more complex converter models. Moreover, a comparison between both models regarding the required resources in the implementation in a commercial RTDS platform is performed to validate the benefits of the proposed model in performing PHIL analysis of large power distribution systems.

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Section: A Test 1: Lc-filter and Convertermentioning

confidence: 99%

“…The model to be presented is an adaptation of the reduced order input impedance model of switched converters depicted in [5]. The reduced order model is based on the behavior observed at the input port of a regulated converter in smallsignal (Fig.…”

Section: Introductionmentioning

confidence: 99%

Reduced-Order Model of Power Converters to Optimize Power Hardware-In-the-Loop Technology in Dc-Distributed Systems

Sanz

Santamargarita

Huerta

et al. 2020

2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…As can be seen, this reduced model has certain advantages over the traditional analytical model, such as the quick obtaining from easily measurable parameters or even those present in the datasheets, avoiding complex analytical obtaining techniques and high-cost measurements, which is especially noticeable in high-power converters. This input impedance model has already been validated for DC-DC converters [11], [12], and now it is wanted to check its accuracy for DC-AC converters.…”

Section: Analytical Input Impedancementioning

confidence: 99%

Study of Applicability of Simple Closed Loop Input Impedance Model for Grid-Tie Inverters

Santamargarita

Huerta

Sanz

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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In recent years the need for DC distribution buses has increased considerably. As it can be noticed in the transport for example the distribution systems of the more electric aircrafts, ships, or electric cars. Given the complexities of the systems presented above, the need to use more and more switched power converters has arisen. The main problem of the connection of multiple controlled switched converters acting as source and load is the degradation of stability that occurs on the DC distribution bus due to the converter interactions. To study the stability in the distribution bus there are some wellestablished criteria. These criteria require knowledge of the input impedance of the converters that act as load and the output impedance of the equipment that acts as source. In order to reduce the complexity of obtaining the input impedance a model based on a controlled converter acting as a constant power load (CPL) is commonly used. This article studies the accuracy of this model for a commonly used topology in distribution systems nowadays, Two Level Voltage Source Converter (2L-VSC), studying different scenarios that make the model become inaccurate.

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“…La condición para obtener un sistema estable [41] cuando un convertidor actúa como una carga de otro (Figura 51) es que la impedancia de salida del convertidor fuente sea más pequeña que la impedancia de entrada del convertidor carga . Como se indica en [42], la impedancia de entrada del convertidor carga está definida por su filtro de entrada y la demanda de potencia constante (resistencia negativa en enfoque de pequeña señal). Por lo tanto, el conocimiento de la impedancia de entrada del convertidor carga es esencial para monitorizar la estabilidad del sistema.…”

Section: Introductionunclassified

SoC implementation of an autonomous identification and control system for DC/DC power converters

Fernández

Zumel

Granda

et al. 2016

2016 IEEE 17th Workshop on Control and Modeling for Power Electronics (COMPEL)

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Low-cost input impedance estimator of Dc-to-Dc converters for designing the control loop in cascaded converters

Cited by 6 publications

References 12 publications

Reduced-Order Model of Power Converters to Optimize Power Hardware-In-the-Loop Technology in Dc-Distributed Systems

Reduced-Order Model of Power Converters to Optimize Power Hardware-In-the-Loop Technology in Dc-Distributed Systems

Study of Applicability of Simple Closed Loop Input Impedance Model for Grid-Tie Inverters

SoC implementation of an autonomous identification and control system for DC/DC power converters

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