1 Muehlwitz, M 2 Munich University of Technology, Germany 1 Musha, T 1 Musz, P 1 N, N - N,+N 1 National Institute of Technology Rourkela - Next Generation Power Technology Center, Myongji University, Korea 1 Next Generation Power Technology Center, Myongji University, Yongin, Korea 1 Next-Generation Power Technology Center, Myongji University, Yongin, Korea