A High Step-Down Interleaved Buck Converter with Active-Clamp Circuits for Wind Turbines

Energies

Cheng-Tao Tsai¹ 

[1] Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan; E-Mail:

关键词: high-step;    coupled-inductor;    passive-clamp;    active-clamp;    soft-switching;   

DOI  :  10.3390/en5125150

来源: mdpi

【 摘 要 】

In this paper, a high step-down interleaved buck coupled-inductor converter (IBCC) with active-clamp circuits for wind energy conversion has been studied. In high step-down voltage applications, an IBCC can extend duty ratio and reduce voltage stresses on active switches. In order to reduce switching losses of active switches to improve conversion efficiency, a IBCC with soft-switching techniques is usually required. Compared with passive-clamp circuits, the IBCC with active-clamp circuits have lower switching losses and minimum ringing voltage of the active switches. Thus, the proposed IBCC with active-clamp circuits for wind energy conversion can significantly increase conversion efficiency. Finally, a 240 W prototype of the proposed IBCC with active-clamp circuits was built and implemented. Experimental results have shown that efficiency can reach as high as 91%. The proposed IBCC with active-clamp circuits is presented in high step-down voltage applications to verify the performance and the feasibility for energy conversion of wind turbines.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.