Dynamic Voltage Restorer

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 6096 Experts worldwide ranked by ideXlab platform

Mahesh K. Mishra - One of the best experts on this subject based on the ideXlab platform.

  • Predictive Voltage Control of Transformerless Dynamic Voltage Restorer
    IEEE Transactions on Industrial Electronics, 2015
    Co-Authors: Chandan Kumar, Mahesh K. Mishra
    Abstract:

    This paper presents a predictive Voltage control scheme for the effective control of a transformerless Dynamic Voltage Restorer (TDVR). This control scheme utilizes the discrete model of a Voltage source inverter and an interfacing filter for the generation of the switching strategy of inverter switches. Predictive Voltage control algorithm-based TDVR tracks the reference Voltage effectively and maintains load Voltages sinusoidal during various Voltage disturbances as well as load conditions. Moreover, this scheme does not require any linear controller or modulation technique. Simulation and experimental results are presented to verify the performance of the proposed scheme.

S. V. N. L. Lalitha - One of the best experts on this subject based on the ideXlab platform.

Chandan Kumar - One of the best experts on this subject based on the ideXlab platform.

  • Predictive Voltage Control of Transformerless Dynamic Voltage Restorer
    IEEE Transactions on Industrial Electronics, 2015
    Co-Authors: Chandan Kumar, Mahesh K. Mishra
    Abstract:

    This paper presents a predictive Voltage control scheme for the effective control of a transformerless Dynamic Voltage Restorer (TDVR). This control scheme utilizes the discrete model of a Voltage source inverter and an interfacing filter for the generation of the switching strategy of inverter switches. Predictive Voltage control algorithm-based TDVR tracks the reference Voltage effectively and maintains load Voltages sinusoidal during various Voltage disturbances as well as load conditions. Moreover, this scheme does not require any linear controller or modulation technique. Simulation and experimental results are presented to verify the performance of the proposed scheme.

D. Mahinda Vilathgamuwa - One of the best experts on this subject based on the ideXlab platform.

  • Voltage sag compensation with z source inverter based Dynamic Voltage Restorer
    IEEE Industry Applications Society Annual Meeting, 2006
    Co-Authors: D. Mahinda Vilathgamuwa, C J Gajanayake, Poh Chiang Loh
    Abstract:

    The Dynamic Voltage Restorer has been gaining acceptance as an effective device for Voltage sag compensation. The compensation capability of a Dynamic Voltage Restorer (DVR) depends primarily on the maximum Voltage injection ability and the amount of stored energy available within the Restorer. A new topology based on Z-source inverter for the DVR is proposed in order to enhance the Voltage restoration property of the device. Z-source impedance network along with shoot-through hrough capability of the proposed inverter would ensure a constant dc-Voltage across the dc-link despite dwindling Voltage in the storage devices connected in the dc-link during the process of Voltage compensation. Even when the dc-link energy is supplied through a shunt connected auxiliary supply, the Voltage rating of the shunt converter, shunt transformer and the dc-link capacitor can be kept smaller with the proposed topology. The proposed converter topology and control methods are validated by simulation and laboratory tests carried out on a proto-type of the Restorer.

  • Multilevel Dynamic Voltage Restorer
    IEEE Power Electronics Letters, 2004
    Co-Authors: Poh Chiang Loh, Seng Khai Tang, D. Mahinda Vilathgamuwa, Hian Lih Long
    Abstract:

    This letter presents the implementation and control of a high Voltage Dynamic Voltage Restorer (HVDVR) for use in power distribution network to compensate for sags in utility Voltages. The proposed HVDVR is implemented using a multilevel inverter topology with isolated dc energy storages, allowing the direct connection of the HVDVR to the distribution network without using a bulky and costly series injection transformer. A control algorithm, incorporating P+ resonant and Posicast compensators, is also presented for controlling the HVDVR with perfect reference Voltage tracking and effective damping of transient Voltage oscillations at the instant of sag compensation. Finally, simulation results are presented to verify the performance of the proposed multilevel HVDVR.

  • Transformerless Dynamic Voltage Restorer
    IEE Proceedings - Generation, Transmission and Distribution, 2002
    Co-Authors: B. H. Li, S S Choi, D. Mahinda Vilathgamuwa
    Abstract:

    The feasibility of achieving Dynamic Voltage restoration without the use of the injection transformer is investigated. The configuration of a proposed transformerless Dynamic Voltage Restorer (DVR) features separate energy storage capacitors for phase-to-phase isolation, cascaded switches/inverters for the Voltage boosting functions and a Dynamic energy replenishing charging circuit. Comparison of the scheme with the conventional DVR is conducted in terms of Voltage regulation property, power losses, reliabilities, costs and ride-through capabilities. The transformerless DVR is seen to be advantageous over the conventional DVR in many aspects. Simulation results also demonstrate the effective Dynamic performance of the DVR scheme

  • On the injection transformer used in the Dynamic Voltage Restorer
    PowerCon 2000 - 2000 International Conference on Power System Technology, Proceedings, 2000
    Co-Authors: B. H. Li, S S Choi, D. Mahinda Vilathgamuwa
    Abstract:

    The injection transformer used in the Dynamic Voltage Restorer (DVR) plays a crucial role in ensuring the maximum reliability and effectiveness of the restoration scheme. The functional relationship between the transformer and the other components constituting the DVR and the external distribution system is analyzed. Based on the results of the investigation, a design guideline leading to a cost-effective Voltage restoration system is then proposed

Rajesh Damaraju - One of the best experts on this subject based on the ideXlab platform.

Related terms

Dynamic Voltage Restorer - 15 days free trial to Access Experts & Abstracts