Bidirectional three phase power converter

Alias, Azrita; Rahim, N.A.; Hussain, Mohd Azlan

doi:10.1109/cet.2011.6041487

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…In Figure 3, the interlinking converter uses three legs with six Insulated Gate Bipolar Transistor (IGBT)s. The input control is come from both sides, in the AC sub microgrid side using current and voltage, and the voltage in the DC sub microgrid side [19][20][21][22][23].…”

Section: Interlinking Convertermentioning

confidence: 99%

Stability and reliability of low voltage hybrid AC-DC microgrids power flow model in islanding operation

Afianti

Penangsang

Soeprijanto

2020

IJEECS

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The problem of decreasing and increasing power flow in hybrid AC-DC microgrids in island operations is the concern of this research. This condition arises if one sub-microgrid cannot supply load power requirements, either due to a decrease in power at the source or an increase in load on the sub-microgrid network. As a result, in this research used the bidirectional converter as an interlinking converter, the converter can change the power flow from the ac sub microgrid to the dc sub microgrid and vice versa. With this bidirectional converter, load power requirements can be met even though there is a power change in one of the sub microgrid. The simulation in this research support by Simulink/Matlab software. The model is built in a low voltage system, and the power flow analysis is in steady-state condition with two different cases. The simulation results show the stability and reliability of the power flow in both sub microgrid with stable frequency and voltage when power and load change occur.

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Section: Interlinking Convertermentioning

confidence: 99%

Stability and reliability of low voltage hybrid AC-DC microgrids power flow model in islanding operation

Afianti

Penangsang

Soeprijanto

2020

IJEECS

View full text Add to dashboard Cite

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“…An AC-DC converter (grid side converter) with suitable modulation technique is used to maintain a constant DC-link voltage by following grid side reference currents to control flow of active and reactive power [14]. The design of the converter and its switching technique are responsible for the power quality of the system considering that nearly sinusoidal stator currents, low total harmonic distortion THD (less than 5%) and stable DC-link voltage are the factors affecting the power quality in FESS [60]. The combination of AC-DC-AC power converters is called the back-to-back (BTB) configuration and is the most widely used topology in FESS applications [53].…”

Section: Power Electronics Interfacementioning

confidence: 99%

Performance and Loss Analysis of Squirrel Cage Induction Machine Based Flywheel Energy Storage System

et al. 2019

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Flywheel energy storage systems (FESS) are one of the earliest forms of energy storage technologies with several benefits of long service time, high power density, low maintenance, and insensitivity to environmental conditions being important areas of research in recent years. This paper focusses on the electrical machine and power electronics, an important part of a flywheel system, the electrical machine rotating with the flywheel inertia in order to perform charge-discharge cycles. The type of machine used in the electrical drive plays an important role in the characteristics governing electrical losses as well as standby losses. Permanent magnet synchronous machine (PMSM) and induction machines (IM) are the two most common types of electric machines used in FESS applications where the latter has negligible standby losses due to its lower rotor magnetic field until energised by the stator. This paper describes research in which the operational and standby losses of a squirrel-cage induction machine-based flywheel storage system (SCIM-FESS) are modelled as a system developed in MATLAB/Simulink environment inclusive of the control system for the power electronics converters. Using the proposed control algorithm and in-depth analysis of the system losses, a detailed assessment of the dynamic performance of the SCIM-FESS is performed for different states of charging, discharging, and standby modes. The results of the analysis show that, in presence of system losses including aerodynamic and bearing friction losses, the SCIM-FESS has satisfactory characteristics in energy regulation and dynamic response during load torque variations. The compliance of FESS and its conversion between the generating and motoring mode within milliseconds show the responsiveness of the proposed control system. Appl. Sci. 2019, 9, 4537 2 of 26 there are various solutions proposed to ensure network stability and reliability with RES including demand management, interconnection with external grids, and ESS [5].There are ranges of systems involved in energy storage process, which can convert, store and deliver energy on demand. Performance of these systems depends on the amount of energy they can store, the storage time and delivery of energy with minimum losses [6]. Therefore, high power capability, high efficiency, low capital cost and environmentally friendly attributes improve the value of ESS [7].A FESS is an assembly of a rotating mass, electrical machine, power electronics converter, bearing system and containment. The design of the rotor used in FESS depends on the materials from which they are made. Solid disk or solid cylinder are made from isotropic materials like steel. Rim type or hollow cylinder flywheel rotors are constructed from non-isotropic material like composite carbon fiber. Solid disk or solid cylinder flywheel rotors have simple construction and are commonly used [8]. Solid rotor flywheels exhibit less displacement from axes due to centrifugal forces hence simplifying flywheel attachment to the shaft and with ele...

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“…Their values depend on parameters Ld, Lq and Ψmd for a particular operating point. Since Ld, Lq and Ψmd are changing with saturation and cross-magnetization, various models (Miao et al, 2017) and techniques (Tang et al, 2015), (Xu et al, 2017), (Chen et al, 2018), (Bariša et al, 2015), (Fazeli et al, 2009), (Sun et al, 2015) were developed to address those effects and to estimate Id and Iq components for MTPA control strategy. In order to properly model the variation of the parameters with saturation and cross-magnetization, a current dependent flux linkage model is identified based on finite element calculations.…”

Section: Introductionmentioning

confidence: 99%

Method for Determining Battery Health

Brečko¹,

Igrec²,

Breznik³

et al. 2019

7th Symposium on Applied Electromagnetics SAEM`18: Conference Proceedings

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The International Symposium on Applied Electromagnetics is aimed at the presentation of research work results in various areas of Applied Electromagnetics. The Symposium is devoted to exchanging ideas, presenting achievements and results, providing the forum for researchers and academics. Open and friendly atmosphere, which our conferences are known for, encourages especially young researchers to present their achievements and ideas, even at an early stage of their research work. The Symposium continues the tradition of joint conferences, organised in previous years by the organisers from Macedonia, Poland, Slovenia and Hungary. The symposium is open for participants from all over the world. This year's symposium took place between 17th and 20th June 2018 in Podčetrtek, Slovenia. We would like to thank all the participants for their participation at the International Symposium on Applied Electromagnetics and wish them a successful academic career.

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Bidirectional three phase power converter

Cited by 6 publications

References 12 publications

Stability and reliability of low voltage hybrid AC-DC microgrids power flow model in islanding operation

Stability and reliability of low voltage hybrid AC-DC microgrids power flow model in islanding operation

Performance and Loss Analysis of Squirrel Cage Induction Machine Based Flywheel Energy Storage System

Method for Determining Battery Health

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