Parameter extraction for the extended cantilever model of magnetic component windings

Shah, M.J.; Ngo, Khai D. T.

doi:10.1109/7.826328

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Theoretically, the extended cantilever model (ECM) for the transformer is convenient in terms of the parameter extraction, since each model parameter can be extracted from a single measurement of an open-circuit voltage or a short-circuit current [34]. For this reason, the ECM is applied for the three windings coupled transformer to extract interfacing inductances between each port, as shown in Figure 3, where L W1 is the magnetizing inductance seen from the primary winding, W 1 (L ij , i, j = 0∼2, i = j) is the leakage inductance between each pair of windings, and n 2 and n 3 are turns ratios and have the same value in this application.…”

Section: Modeling Of the Three Windings Coupled Transformermentioning

confidence: 99%

Implementation of a Single-Phase SST for the Interface between a 13.2 kV MVAC Network and a 750 V Bipolar DC Distribution

Yun

Jeong

Kim³

et al. 2018

Electronics

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This paper presents the implementation of a single-phase solid-state transformer (SST) for the interface between a 13.2 kV medium voltage alternative current (MVAC) network and a 750 V bipolar DC distribution. The SST has ten cascaded subunits in consideration of the device rating and modulation index (MI). Each subunit consists of an AC/DC stage and a DC/DC stage with a high frequency isolated transformer (HFIT). The AC/DC stage consists of cascaded H-bridges (CHBs) to cope with the MVAC. The DC/DC stage employs a triple active bridge (TAB) converter for bipolar DC distribution. Topology analysis and controller design for this specific structure are discussed. In addition, the insulation of HFIT used in DC/DC converters is also discussed. A simple balancing controller at the AC/DC stage and a current sharing controller at the DC/DC stage are used to prevent DC-link voltage unbalance caused by the cascaded structure. The discussions are validated using a 150 kW single-phase 21-level SST prototype at the laboratory level.Electronics 2018, 7, 62 2 of 19 gate bipolar transistor (IGBT) packages for high-voltage and low-current application, and Ref.[12] presented a 3.3 kV 300 kVA back-to-back three-phase SST prototype for universal and flexible power management. In Ref.[13], a 15 kV 1.2 MVA single-phase SST prototype was designed for a railway grid. These prototypes have different structures depending on the purpose of use. In other words, the SST prototypes were designed to be suitable for specific applications.This paper introduces a single-phase 150 kW prototype of an SST for the connection between a 13.2 kV MVAC grid and a bipolar 750 V DC distribution system. This SST prototype consists of an AC/DC stage and a DC/DC stage. The AC/DC stage employs the CHB rectifiers and is responsible for power factor control, voltage regulation, and the voltage balancing of DC-links. The DC/DC stage employs a specially designed TAB converter for connecting to the bipolar DC distribution system. In addition, it is responsible for voltage control, and current sharing in parallel-connected outputs. This paper also discusses the insulation of the HFIT used in the TAB converter.The rest of this paper is organized as follows: the overall structure of the SST system used in this paper is briefly introduced in Section 2. Section 3 provides the details about the controller of AC/DC stage for the voltage balancing of DC-links. In Section 4, the DC/DC stage is analyzed including the characteristics of the topology, modeling, and controller design. In Section 5, the HFIT design for high-voltage insulation is discussed. The simulations and experimental results using a 150 kW SST prototype are presented in Sections 6 and 7, respectively. Finally, the conclusions are provided in Section 8.

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Section: Modeling Of the Three Windings Coupled Transformermentioning

confidence: 99%

Implementation of a Single-Phase SST for the Interface between a 13.2 kV MVAC Network and a 750 V Bipolar DC Distribution

Yun

Jeong

Kim³

et al. 2018

Electronics

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“…Numerous studies have explored the modeling and simulation of TRs, including both single-phase and three-phase configurations. However, the existing literature presents a variety of modeling techniques, ranging from classical phasor-based representations to more contemporary state-space formulations [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of a Single-Phase Linear Multi-Winding Transformer in the d-q Frame

Campos-Salazar,

Viani-Abad,

Sandoval-García

2024

J. Electron. Electric. Eng.

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Exploring the fundamental principles of system modeling in electrical engineering, this study delves into the transformative power of the d-q transformation, highlighting its pivotal role in rendering time-varying systems into a coherent steady-state representation. Departing from conventional approaches, the study navigates the complexities of single-phase transformer configurations, utilizing the Clarke and Park transformations to seamlessly transition between electrical coordinates and the d-q frame. Through extensive derivations, dynamic equations are formulated in both α-β and d-q coordinates, providing a detailed understanding of system dynamics under specific loads. In addition, the study extends the analysis to a generalized multi-winding transformer model that accommodates a wide range of transformer setups. With detailed mathematical derivations, insightful visual aids, and clear state-space representations, this work attempt to be a resource for researchers seeking to unravel the intricacies of electrical system modeling and analysis.

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Improved method to extract the short-circuit parameters of the BECM

Ngo

Gangupomu

2003

IEEE Power Electron. Lett.

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Parameter extraction for the extended cantilever model of magnetic component windings

Cited by 5 publications

References 13 publications

Implementation of a Single-Phase SST for the Interface between a 13.2 kV MVAC Network and a 750 V Bipolar DC Distribution

Implementation of a Single-Phase SST for the Interface between a 13.2 kV MVAC Network and a 750 V Bipolar DC Distribution

Modeling and Simulation of a Single-Phase Linear Multi-Winding Transformer in the d-q Frame

Improved method to extract the short-circuit parameters of the BECM

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