Abstract The use of ducted configuration to increase the efficiency wind turbine rotors is gaining wide attention in scientific community. Specifically for mini and micro urban environment applications this solution demonstrated be very attractive. possibility overcome Betz limit power coefficient was widely horizontal axis turbines. However, few studies have dealt with Savonius rotor despite t...

We consider an N-dimensional real integral, indexed by a parameter that specifies the power of a Vandermonde determinant. For two particular values of the parameter, this integral arises from matrix integrals, over real symmetric and complex Hermitian N × N matrices. When it is normalized, it gives the expectation of an arbitrary power of the determinant. The results are given as finite summati...

In this paper, a synchronized control strategy of double fed induction generator that can provide reserve capability and primary frequency support for microgrid is firstly developed. The microgrid based small signal stability performance is investigated under multiple operating conditions. The effect of three categories of key controller parameters on dominant eigenvalues is studied by sensitiv...