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The linear induction motor (LIM) drives using conventional direct thrust control (DTC) schemes have drawbacks of large thrust ripples in low speed range and so on. In this paper, the thrust ripples of the DTC-based LEVI drives are theoretically analyzed. A novel switching scheme using synthesized voltage vector and magnitude modulation method is proposed to replace the conventional switching table...
Due to the existence of end-effects and large mechanic clearance, the parameters of linear induction motor (LIM) are variable and the efficiency is lower than that of rotary induction motor (RIM). This paper proposes a strategy to minimize the losses for direct thrust-controlled linear induction motor drives. The proposed strategy, which is based on a novel search algorithm, chooses primary current...
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,...
Due to the existence of end-effects and the changing operational conditions, the parameters of linear induction motor (LIM) are variable. In this paper, model reference adaptive method is applied to the parameter identification of linear induction motor. Based on the proposed method, the magnetizing inductance and secondary resistance, which are both the most variable in the equivalent circuit of...
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