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This paper provides a solution for design of permanent magnet (PM) assisted synchronous reluctance machine (PMa-SynRM). Unlike interior PM machines, the PMa-SynRM is substantially a SynRM with a dominant reluctance torque. PMa-SynRMs are often designed by direct embedding magnets in a SynRM rotor to improve the performance over the original SynRM. However, the PM arrangements being more effective...
This, paper presents a model predictive control (MPC) scheme and its model reduction approach for the brushless doubly fed twin stator induction machine (BDFTSIM). Firstly, the state-space equations of BDFTSIM, in terms of (power winding) PW flux, (rotor winding) RW flux, and (control winding) CW flux, is derived for developing the complete power model which is explicitly used to predict the future...
This paper presents the design of an Interior permanent magnet (IPM) synchronous machine to improve machine performance by increasing saliency ratio and minimizing the leakage flux through the ribs and air barriers of an IPM machine. A bar-type IPM basic model is taken and two variables, variable 1 as factor-A and variable 2 as factor-B are analyzed. Factor-A is the radial distance of the rotor air...
Model predictive direct power control (MPDPC) has been widely noticed in the field of doubly fed induction generator (DFIG) control. The optimal vector is selected based on the principle of power error minimization. However, conventional MPDPC will produce high power ripples and large current distortion under unbalanced grid voltage condition. To achieve sinusoidal stator currents and/or constant...
This paper investigates an induction machine using a novel concept of a converter-fed rotor. The stator is directly connected to the grid while the rotor is fed by a converter with a floating capacitor over the dc-link. In earlier work this topology has shown to be capable of improving the power factor and efficiency of a 4-pole induction machine. This paper explores the possibility to improve the...
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