The characteristic components of the rotor broken based on MUSIC method of cross-high-spectrum

As Cross high order accumulation is able to depress non-correlative noise and correlative noise, MUSIC method based on cross-high-order cumulate is provided for diagnosing rotor broken-bar. It is difficult to detect faults feature component of the rotor broken-bar that it always hides behind the strong supply frequency component in the spectrum of the stator current. Simulation results were shown that the method is higher in resolution of frequency and more accurate and less in computational complexity. Fault characteristic components can be obtained accurately. The feasibility of the method is confirmed.