Modeling and Analysis of Maximum Power Tracking of a 600 kW Hydraulic Energy Storage Wind Turbine Test Rig
Abstract
:1. Introduction
2. System Overview
3. Mathematical Model
3.1. Wind Turbine
3.2. Hydraulic Variable Transmission
3.2.1. Main Hydraulic Pump
3.2.2. Main Hydraulic Motor
3.3. Hydraulic Energy Storage
3.3.1. Energy Storage Hydraulic Pump
3.3.2. Hydraulic Accumulator
3.4. Electric Power Generation
Synchronous Generator
4. System Control Scheme
4.1. Tip Speed Ratio (TSR) MPPT Algorithm
4.2. MPPT and Constant Frequency Control
5. Simulation and Discussion
5.1. The Design of the Experimental Prototype
5.2. Simulations and Analyses
5.2.1. Step Wind Speed Condition
5.2.2. Turbulent Wind Speed Condition
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
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Parameter | Value | Unit |
---|---|---|
Rotor diameter | 44 | m |
Air density | 1.225 | kg/m3 |
Rotor equivalent viscosity efficient | 50 | N∙m(r/min) |
Rotor equivalent moment of inertia | 20,000 | kg∙m2 |
Main hydraulic pump placement | 55,300 | mL/r |
Main motor displacement | 1000 | mL/r |
Main motor equivalent viscosity efficient | 0.1 | N∙m(r/min) |
Main motor equivalent moment of inertia | 40 | kg∙m2 |
Accumulator capacity | 6000 | L |
Accumulator initial oil pressure | 180 | bar |
Accumulator gas pre-charge pressure | 100 | bar |
Energy storage pump displacement | 500 | mL/r |
Generation motor speed command | 1500 | r/min |
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Wei, L.; Zhan, P.; Liu, Z.; Tao, Y.; Yue, D. Modeling and Analysis of Maximum Power Tracking of a 600 kW Hydraulic Energy Storage Wind Turbine Test Rig. Processes 2019, 7, 706. https://doi.org/10.3390/pr7100706
Wei L, Zhan P, Liu Z, Tao Y, Yue D. Modeling and Analysis of Maximum Power Tracking of a 600 kW Hydraulic Energy Storage Wind Turbine Test Rig. Processes. 2019; 7(10):706. https://doi.org/10.3390/pr7100706
Chicago/Turabian StyleWei, Liejiang, Peng Zhan, Zengguang Liu, Yanhua Tao, and Daling Yue. 2019. "Modeling and Analysis of Maximum Power Tracking of a 600 kW Hydraulic Energy Storage Wind Turbine Test Rig" Processes 7, no. 10: 706. https://doi.org/10.3390/pr7100706