Three-stage static power converter for battery charging feasible to small wind energy conversion systems

Filho, Herminio Miguel de Oliveira; Oliveira, Demercil S.; Silva, Carlos E. de A. e

doi:10.1109/induscon.2012.6453835

Cited by 1 publication

(3 citation statements)

References 6 publications

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“…although PFC is achieved in this case. To improve control flexibility, a three-stage approach with boost and buck converters was employed in [13]. Even though the optimum design of each conversion stage is possible, global efficiency is less than 90% because of three cascaded stages.…”

Section: Research Articlementioning

confidence: 99%

“…This approach allows maximum power point tracking (MPPT) over a wide range of wind speeds, as well as limitation of the current through the battery. Since only two stages are used, increased efficiency is expected if compared with [13]. Partial PFC is possible with reduced total harmonic distortion (THD), that is, <20%.…”

Section: Research Articlementioning

confidence: 99%

“…Besides, considering the use of a buck-boost converter in [9,10] and a SEPIC converter in [11], where higher current and voltage stresses exist, poor efficiency is also expected. Finally, it is reasonable to state that efficiency is higher in the introduced WECS because it uses only two power stages instead of three as in [13].…”

Section: Steady-state Behaviourmentioning

confidence: 99%

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Low cost wind energy conversion system based on the discontinuous conduction mode three‐phase semi‐controlled rectifier

Oliveira

Tofoli

Antunes

et al. 2015

IET Power Electronics

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This study introduces a low-cost topology used in a wind energy conversion system with efficient power control in order to meet battery charge requirements. The proposed structure is based on a high-frequency three-phase semicontrolled rectifier operating in the discontinuous conduction mode associated with a buck converter. The system comprises three control loops, which limit the current and voltage ratings to the maximum values allowed by the batteries and also regulate the voltage across the intermediate dc link. In addition, a novel maximum power point tracking algorithm that intends to maximise the power extracted from the wind turbine/generator/converter association is proposed. The principle of the proposed technique is based on a modified version of power signal feedback algorithm, where a given power level can be extracted from the wind turbine for each value of the mechanical speed. However, since the optimal power curve is not exactly known and temperature causes considerable variations in the optimal power curve, a method to search the best match is proposed. Experimental results from a 300-W prototype are presented and discussed.

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Section: Research Articlementioning

confidence: 99%

Section: Research Articlementioning

confidence: 99%