Transient Operation of a Four-Leg Inverter for Autonomous Applications With Unbalanced Load

Vechiu, Ionel; Curea, Octavian; Camblong, Haritza

doi:10.1109/tpel.2009.2025275

Cited by 160 publications

(84 citation statements)

References 28 publications

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“…The big advantage of sequence decomposition is that it allows decoupled control of the positive and negative sequence voltage components. However, it delays the measured voltage by one-fourth of the period at the fundamental frequency [151]. In Fig.…”

Section: Load-side Control Schemementioning

confidence: 99%

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A small-scale standalone wind energy conversion system featuring SCIG, CSI and a novel storage integration scheme

Alnasir

Kazerani

2016

Renewable Energy

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Small-scale standalone wind turbines provide a very attractive renewable energy source for off-grid remote communities. Taking advantage of variable-speed turbine technology, which requires a partial-or full-scale power converter, and through integrating an energy storage system, smooth and fast power flow control, maximum power point tracking, and a highquality power is ensured.Due to high reliability and efficiency, permanent magnet synchronous generator seems to be the dominating generator type in gearless wind turbines, employed for off-grid applications.However, wind turbines using geared squirrel-cage induction generator (SCIG) are still widely accepted due to their robustness, simplicity, light weight and low cost. Permanent magnet induction generator, a relatively new induction-based machine, has recently been recognized in the wind energy market as an alternative for permanent magnet synchronous generator. A thorough comparative study, among these three generator types, is conducted in this research in order to enable selection of the most appropriate generator for off-grid wind energy conversion system (WECS), subject to a set of given conditions. The system based on geared SCIG has been shown to be the most appropriate scheme for a small-scale standalone WECS, supplying a remote area.Different topologies of power electronic converters, employed in WECSs, are overviewed.Among the converters considered, current source converter is identified to have a great potential for off-grid wind turbines.Three current-source inverter-based topologies, validated in the literature for on-grid WECS, are compared for off-grid WECS application. Feasibility study and performance evaluation are conducted through analysis and simulation. Among all, the topology composed of three-phase diode bridge rectifier, DC/DC buck converter, and pulse-width-modulated current-source inverter (PWM-CSI) is identified as a simple and low-cost configuration, offering satisfactory performance for a low-power off-grid WECS.A small-scale standalone wind energy conversion system featuring SCIG, CSI and a novel energy storage integration scheme is proposed and a systematic approach for the dc-link inductor design is presented. iv In developing the overall dynamic model of the proposed wind turbine system, detailed models of the system components are derived. A reduced-order generic load model, that is suitable for both balanced and unbalanced load conditions, is developed and combined with the system components in order to enable steady-state and transient simulations of the overall system. A linear small-signal model of the system is developed around three operating points to investigate stability, controllability, and observability of the system. The eigenvalue analysis of the small-signal model shows that the open-loop system is locally stable around operating points 1 and 3, but not 2. Gramian matrices of the linearized system show that the system is completely controllable at the three operating points and completely observable at...

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Section: Load-side Control Schemementioning

confidence: 99%

“…In the proposed WECS, shown in Fig The concept of sequence decomposition has been used in [150], [151] to control a VSI supplying an unbalanced load. The big advantage of sequence decomposition is that it allows decoupled control of the positive and negative sequence voltage components.…”

Section: Load-side Control Schemementioning

confidence: 99%

A small-scale standalone wind energy conversion system featuring SCIG, CSI and a novel storage integration scheme

Alnasir

Kazerani

2016

Renewable Energy

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“…Non-inductor resistor is chosen as damping resistance in order to avoid equivalent inductance [5]. Better temperature and frequency stability, up to 80% less loss comparing iron powder, the most cost-effective…”

Section: Main Circuit Designmentioning

confidence: 99%

Research on Three-phase Variable Frequency Power Source Based on SVPWM

Yang¹,

Líu²

2017

dteees

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Abstract. The traditional SPWM method is designed for analog circuit which is difficult to keep pace with the trend of modern power source development. The Space Vector Pulse Width Modulation (SVPWM) takes advantages of higher voltage utilization rate, less output voltage distortion, lower harmonic content, easier for controlling and digitalization comparing traditional PWM control technology. Therefore, the three-phase variable-frequency power source control system is presented in this paper based on SVPWM technology.

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“…In the found research works [13,14], this technique seem to be well adapted for four leg inverter with an output LC filter. Several control approaches to minimize the Chattering in Induction-Motors, 6 DOF Octorotor, Doubly-Fed Induction Motor and Wind Energy Conversion have been reported in the literature [7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Sliding Mode Control Using SVM for Power Quality Enhancement in StandAlone System Based on Four-Leg Voltage

Djerioui¹,

Ouali²,

Ladjal³

2018

IJIES

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This paper proposes a sliding mode control strategy for hybrid power system (HPS). The hybrid power system consists of four-leg voltage source Inverter Bridge. The HPS ensures full compensation for harmonic phase currents, neutral current, reactive power compensation and unbalanced nonlinear load currents. The Sliding Mode control strategy with a three dimensional space vector modulation deals with power quality enhancement in standalone power-supply systems with the key objective to compensate for AC side load and phase disturbances that result essentially from the presence of nonlinear and unbalanced loads. The four-leg voltage source inverters play an important role by providing both balanced and unbalanced loads with clean power and balanced output voltage. The simulation results show that the performance of the four-leg HPS with the proposed control algorithm.

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Transient Operation of a Four-Leg Inverter for Autonomous Applications With Unbalanced Load

Cited by 160 publications

References 28 publications

A small-scale standalone wind energy conversion system featuring SCIG, CSI and a novel storage integration scheme

A small-scale standalone wind energy conversion system featuring SCIG, CSI and a novel storage integration scheme

Research on Three-phase Variable Frequency Power Source Based on SVPWM

Sliding Mode Control Using SVM for Power Quality Enhancement in StandAlone System Based on Four-Leg Voltage

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