A Utility Friendly High Power Induction Motor Drive with Direct Torque and Flux Control

2006 IEEE International Conference on Industrial Technology Pub Date : 2006-12-01 DOI:10.1109/ICIT.2006.372428

R. Behera, S.P. Das

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引用次数: 7

Abstract

In this paper, a three-level neutral point clamped (NPC) front-end ac-dc converter supplying a three-level inverter fed induction motor drive operating under direct torque and flux control (DTFC) is presented. The three-level ac-dc converter draws sinusoidal ac current from the supply and keeps the dc-link voltage constant. Hysteresis current controller is used for current control of the front-end converter because of its simplicity, easy implementation and good performance. A diode clamped multilevel inverter is used for driving induction motor operating under DTFC scheme. A new technique that ensures constant flux control for forward motoring and reverse motoring is proposed. This technique enables soft starting of the drive. In the proposed drive system, the DTFC principle can be applied in the entire speed range. Simulation results of three-level converter-inverter system demonstrate the validity of the proposed hysteresis current control method. The converter is found to be stable for a large range of hysteresis band. DC link voltage across each capacitor is maintained constant and balanced. The simulation results of the complete drive system are presented here for both forward and reverse motoring operations with regeneration.

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一个实用友好的高功率感应电机驱动与直接转矩和磁链控制

本文提出了一种三电平中性点箝位(NPC)前端交直流变换器，以直接转矩和磁链控制(DTFC)方式为三电平逆变馈感应电动机供电。三电平交直流变换器从电源中提取正弦交流电流，并保持直流链路电压恒定。迟滞电流控制器以其简单、易于实现、性能好等优点，被用于前端变换器的电流控制。采用二极管箝位的多电平逆变器驱动异步电动机在DTFC方案下工作。提出了一种保证正、反向电机恒磁流控制的新方法。这种技术可以使驱动器软启动。在所提出的驱动系统中，DTFC原理可以在整个速度范围内应用。对三电平变换器-逆变器系统的仿真结果验证了所提出的磁滞电流控制方法的有效性。结果表明，该变换器在较大的迟滞带范围内是稳定的。每个电容器之间的直流链路电压保持恒定和平衡。本文给出了带再生的正、反向驱动系统的仿真结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2006 IEEE International Conference on Industrial Technology

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