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In this paper, a new technique for on-line detecting inter-turn stator winding fault in Permanent Magnet Synchronous Machine (PMSM) is presented. It is based on a residual analysis improved by adding a back-EMF waveform estimation system which allows identifying real back-EMF frequency components of the healthy machine. Then, a simple current residual monitoring permits us to detect the fault and...
This paper presents the parameter identification of a specific wound-field synchronous machine prototype designed for an electric vehicle drive train. Standstill frequency response (SSFR) tests, originally developed against the background of stability analyses for large generators, are used here to acquire extensive and detailed data on the machine's transient behaviour. The test setup for the data...
A usual wind energy conversion system (WECS) suffers from significant amount of torque ripples even if the wind velocity remains constant. These torque ripples propagate mechanical stress in the turbine-generator drive train and may eventually lead to the failure of its various components. This research paper presents a unified control strategy which yields maximum power from WECS while minimizing...
Battery Energy Storage System (BESS) is used for load compensation of a permanent generator synchronous generator driven by diesel engine to enhance its performance. The control of BESS with capabilities of reactive power, harmonics and unbalanced load compensation is achieved by indirect current control scheme. The modeling of the DG set is performed using permanent magnet synchronous generator (PMSG)...
The physics-based phase variable model of permanent magnet synchronous machines is developed for the simulation study of machine control. The parameters of the physics-based phase variable model, inductances and flux linkages are calculated from the solutions of nonlinear FE computation covering a complete AC cycle to consider the geometry details, the rotor position, the armature currents, and the...
According to the basic principle and the non-linear characteristic of the buck converter, this paper separately constructs the T-S fuzzy model of the buck electric circuit in two kinds of patterns which are CCM (continuous current mode) and DCM (discontinuous current mode). In order to get the circuit state equations and T-S fuzzy models in these two patterns, this paper introduces a switching function...
Single sided linear induction motor (SLIM) has good direct drive ability though its efficiency is poor compared with the rotary counterpart. The motor model including iron loss under synchronous coordination is established and the variable loss function is derived in the paper. In the proposed equivalent circuit model of SLIM, to consider the influence of primary leakage inductance on loss calculation,...
The physics-based phase variable model has been developed for several types of machines and transformers. The parameters (inductance/flux linkage) of the physics-based phase variable model were determined using the solutions of field computation to actually reproduce their variations during the machine operation. The developed physics-based phase variable model has the advantage over the conventional...
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