期刊
ENERGIES
卷 16, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/en16135220
关键词
wind energy; wind turbine; power factor correction rectifiers; single-ended primary-inductance converter; discontinuous conduction mode
Small-scale wind turbines are important in distributed generation as they allow customers to produce electric energy using their own properties. The development of power electronics systems for small-scale wind turbines is a concern due to the need to balance cost, simplicity, efficiency, and performance. This paper presents the results of testing a three-phase phase-modular single-ended primary-inductance converter rectifier for processing the energy of a small-scale wind turbine system. The rectifier was able to process the non-sinusoidal three-phase system of the wind turbine and showed advantages such as using the generator's inductance as input filter inductor and simplicity of control.
Small-scale wind turbines play an important role in distributed generation since customers can use their houses, farms, and business to produce electric energy. The development of the power electronics system that processes the electric energy from small-scale wind turbines is a concern due to cost, simplicity, efficiency, and performance trade-offs. This paper presents the results of applying a three-phase phase-modular single-ended primary-inductance converter rectifier to processing the energy of a small-scale wind turbine system. The rectifier was designed according to the specifications of a commercial small-scale wind turbine system and tested in an emulator workbench, providing experimental data on the operation of the rectifier in this application. The rectifier can process the energy of a non-sinusoidal three-phase system since the permanent magnet synchronous generator has trapezoidal waveforms. The results show that the rectifier has the advantages of (i) using the inductance of the generator as the input filter inductor of the rectifier, (ii) providing input currents with the same shape as the voltages and in phase without the use of a current control system, (iii) simplicity of control of the DC output voltage and PWM modulation, and (iv) phase-modular characteristics that allow operating with phase fault without any additional control techniques. Due to the operation in discontinuous conduction mode, low efficiency in high power and/or low input voltage specifications are disadvantages.
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