Modeling, simulation and analysis of common mode voltage, bearing voltage and bearing current in PWM multilevel inverter fed induction motor with long cable

2017 2nd IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT) Pub Date : 2017-05-19 DOI:10.1109/RTEICT.2017.8256781

P. Sunitha, B. Banakara, Sharana Reddy

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引用次数: 5

Abstract

Adjustable Speed Drives (ASDs) are extensively used in industrial Heating, Ventilation and Air Conditioning (HVAC) equipments. As they offers several advantages in control and energy efficiency. The ASDs use PWM inverter with high speed switching devices such as IGBTs generates the common mode voltage (Vcm). This Vcm causes the bearing voltage (Vb) and resulting bearing current (Ib), which shortens the bearing life. The Long motor cable applications causes over voltage and higher Vcm at the motor terminal due to the voltage reflection phenomenon. Higher the Vcm results in higher induced Vb and the Ib. In This paper, modeling, simulation and analysis of the Vcm, Vb and Ib in PWM Multi Level Inverter (MLI) fed Induction Motor (IM) with long cable is carried out. The inverters are feeding 5HP and 10 HP motors. Simulation is carried out using MATLAB simulink.

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长电缆PWM多电平逆变馈电动机共模电压、轴承电压和轴承电流的建模、仿真与分析

可调速驱动器(asd)广泛应用于工业供暖、通风和空调(HVAC)设备中。因为它们在控制和能源效率方面有几个优势。asd采用PWM逆变器与高速开关器件(如igbt)产生共模电压(Vcm)。该Vcm引起轴承电压(Vb)和由此产生的轴承电流(Ib)，从而缩短了轴承寿命。由于电压反射现象，长电机电缆的应用会在电机端产生过电压和更高的Vcm。本文对长电缆PWM多电平逆变器(MLI)馈电异步电动机(IM)中的Vcm、Vb和Ib进行了建模、仿真和分析。逆变器为5马力和10马力的电机供电。利用MATLAB simulink进行仿真。

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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2017 2nd IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT)

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