A Review of Power Electronic Converters for Variable Speed Pumped Storage Plants: Configurations, Operational Challenges, and Future Scopes

Joseph, Anto; Chelliah, Thanga Raj

doi:10.1109/jestpe.2017.2707397

Cited by 119 publications

(62 citation statements)

References 87 publications

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“…The wound rotor induction generator (also called doubly fed induction generators (DFIG)) based wind turbine system has become popular due to the superior features of this type which include low cost, low converter rating, active and reactive power control, reduced losses and high efficiency [12]. Moreover, this type can operate within a wide range of variable speed that overcomes the drawbacks of fixed speed synchronous generator [13]. In the DFIG-based wind energy conversion system (WECS), 70% of the generated power is directly fed to the grid through the stator terminals while the remaining 30% is fed to the grid via back to back converters that comprise rotor side converter, DC-link capacitor and grid side converter as shown in Figure 3 [14][15][16][17].…”

Section: The Basics Of Wind Turbine Systemmentioning

confidence: 99%

Methods for Advanced Wind Turbine Condition Monitoring and Early Diagnosis: A Literature Review

2018

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Condition monitoring and early fault diagnosis for wind turbines have become essential industry practice as they help improve wind farm reliability, overall performance and productivity. If not detected and rectified at early stages, some faults can be catastrophic with significant loss or revenue along with interruption to the business relying mainly on wind energy. The failure of Wind turbine results in system downtime and repairing or replacement expenses that significantly reduce the annual income. Such failures call for more systematized operation and maintenance schemes to ensure the reliability of wind energy conversion systems. Condition monitoring and fault diagnosis systems of wind turbine play an important role in reducing maintenance and operational costs and increase system reliability. This paper is aimed at providing the reader with the overall feature for wind turbine condition monitoring and fault diagnosis which includes various potential fault types and locations along with the signals to be analyzed with different signal processing methods.

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Section: The Basics Of Wind Turbine Systemmentioning

confidence: 99%

Methods for Advanced Wind Turbine Condition Monitoring and Early Diagnosis: A Literature Review

2018

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“…The intended current and voltage rating of this converter are 11,600 A and 3300 V, respectively, i.e. each VSI is rated at 2400 A and 3300 V [5]. Furthermore, the DC-link voltage is 5000 V and the DC-link capacitance value is 18 mF in view of the ripple and protection requirements during disturbances in the grid [21].…”

Section: Boost Npc Convertermentioning

confidence: 99%

Boost multi‐level NPC‐fed VS large rated asynchronous pumped storage hydro‐generating unit

Joseph

Kim

Lee

et al. 2019

IET Electric Power Applications

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The authors intent using a boost multi-level converter for the doubly fed induction machine (DFIM) used in variablespeed pumped storage plants (VS-PSP). Voltage-source converters connected on the rotor side of the machine control the active and reactive powers of the unit. The proposed boost neutral point clamped (NPC) converter topology provides a voltage output two times larger than a conventional three-level NPC (3L-NPC) with similar DC-link voltage and equal number of switches. Hence, it increases the speed variation of the unit, which improves the efficiency during generation and pumping modes. Moreover, it reduces the starting period of the unit at the pumping mode, which is significant during mode changeover time. Furthermore, it reduces switching and conduction losses in the converter. It also reduces the total harmonic distortion in the output current, as it provides five output voltage levels. These improvements show that the boost NPC converter topology is better among VS-PSP project authorities. In addition, the reliability of the proposed topology is investigated, where converter redundancy is a challenging issue in asynchronous VS-PSP units. The proposed boost NPC was compared with the conventional 3L-NPC system by examining a 250 MW DFIM hydro-generating unit.

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“…Ref. [16] reviewed the converters used in DFVSPS units. However, the above literature only shows that the DFVSPS units have the compensation ability for power fluctuations, but the compensation range and compensation speed are not studied.…”

Section: Introductionmentioning

confidence: 99%

Research on an Output Power Model of a Doubly-Fed Variable-Speed Pumped Storage Unit with Switching Process

Zhao

Ren

2019

Applied Sciences

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The doubly-fed variable-speed pumped storage (DFVSPS) is an effective method to balance the fluctuation of renewable energy generation and is an important means of frequency and voltage regulation of a power grid. Firstly, this paper introduces the structure and mathematical model of the DFVSPS unit. Secondly, the control methods of each switching stage in generating mode and pump mode are proposed, and the simulation study of each stage of DFVSPS switching process is carried out by MATLAB/Simulink. Thirdly, when studying the regulating effect of DFVSPS unit in the power system, due to the high switching frequency of converter in the electromagnetic transient model, the simulation speed is very slow and the data volume is large, so the model of DFVSPS unit needs to be simplified. By analyzing the dynamic behavior of the pumped storage power station, the mathematical model of output power of the DFVSPS unit is established, which includes start-up stage, load ramping stage, stable operation stage, load rejection stage and shutdown stage of generating mode and pump mode. Finally, the simplified model of DFVSPS unit is applied to a simple power system to verify its regulating effect on grid power.

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A Review of Power Electronic Converters for Variable Speed Pumped Storage Plants: Configurations, Operational Challenges, and Future Scopes

Cited by 119 publications

References 87 publications

Methods for Advanced Wind Turbine Condition Monitoring and Early Diagnosis: A Literature Review

Methods for Advanced Wind Turbine Condition Monitoring and Early Diagnosis: A Literature Review

Boost multi‐level NPC‐fed VS large rated asynchronous pumped storage hydro‐generating unit

Research on an Output Power Model of a Doubly-Fed Variable-Speed Pumped Storage Unit with Switching Process

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