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Techniques for efficiency improvement in PWM motor drives

机译：改善PWM电机驱动器效率的技术

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In this paper a comprehensive efficiency analysis on an inverter-fed induction motor drive is proposed. The drive under study integrates both switching losses minimization by D-PWM (Discontinuous Pulse Width Modulation) for the voltage source inverter and an original version of an ELMT (Electric Loss Minimization Technique) for the motor. The two techniques are implemented, either separately or contemporary in a unique control platform in order to allow the contribution of both the chosen PWM and ELMT strategies on the power total losses to be assessed and benchmarked. Results have been compared with those achieved by the use of the classic space-vector PWM in constant rated flux operation; from this comparison the improvement of the efficiency of the whole electrical drive with the proposed techniques is demonstrated. A complete dynamic model of the drive system has been developed, which permits the drive behaviour in terms of efficiency/power losses to be evaluated in numerical simulation, properly separating each loss term. Such a complete dynamic model has been validated. Experimental results are given as well. (C) 2016 Elsevier B.V. All rights reserved.
机译：在本文中，对逆变器供电的感应电动机驱动器进行了全面的效率分析。所研究的驱动器集成了通过电压源逆变器的D-PWM（不连续脉冲宽度调制）最小化开关损耗和用于电机的ELMT（电损耗最小化技术）的原始版本。两种技术可以在单独的控制平台中单独实现或同时实现，以便评估和确定所选PWM和ELMT策略对功率总损耗的贡献。将结果与在恒定额定磁通量下使用经典空间矢量PWM所获得的结果进行了比较；通过该比较，证明了利用所提出的技术改善了整个电驱动器的效率。已经开发出驱动系统的完整动态模型，该模型允许在效率/功率损耗方面的驱动行为可以通过数值模拟进行评估，从而适当地分离每个损耗项。这样一个完整的动态模型已经得到验证。还给出了实验结果。 （C）2016 Elsevier B.V.保留所有权利。

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