The digital/physical hybrid simulation(D/PHS) is one of promising research tools for wind power generation technology. Together with the introduction of the characteristics of real-time digital simulation(RTDS), the comparative analysis of the principles/stabilities of a power-type D/PHS system and a signal-type system are given firstly. With RTDS platform and physical converter control system, the signal-type D/PHS scheme for a doubly-fed variable speed constant frequency(VSCF) wind power generator is designed. The RTDS digital model and physical control system are developed respectively, which are discussed in detail. The effectiveness of the proposed scheme is verified by the D/PHS investigation of a 2 MW wind power generator.