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首页> 外文会议>2013 IEEE Energy Conversion Congress amp; Exposition >A new oscillation controller design and induction machine stability analysis of volts/Hz based industrial adjustable speed drives
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A new oscillation controller design and induction machine stability analysis of volts/Hz based industrial adjustable speed drives

机译：基于伏/赫兹的工业变速驱动器的新型振动控制器设计和感应电机稳定性分析

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摘要

Open-loop Volts/Hz controlled industrial adjustable speed drives (ASD) can often experience undesirable sustained oscillations. Factors affecting these oscillation states include induction machine (IM) parameters, dead time, dc link capacitor size, IM saturation, output voltage, carrier frequency, and IM speed. Many literatures have discussed the instabilities in light load or low frequency operating conditions. Quite a few methods have been proposed for stabilizing such a system. However, the instability problems at different power levels, have not been completely described. This paper analyzes the causes of this instability for Volts/Hz based industrial ASDs as power levels change. A 2.2kW and 15kW IMs are evaluated to illustrate how the motor parameters affect the system stability. Additionally, a new oscillation mitigation method is introduced to demonstrate its effectiveness in solving the instability problems. It is based on the dynamic current feedback through its magnetic flux current component band pass filtering and proportional control. Theoretical stability analysis before and after the current feedback compensation, simulation studies are presented and verified through a 20hp (15kW), 380V, 50Hz IM ASD experimental system.
机译：开环电压/赫兹控制的工业可调速变频器（ASD）经常会遇到不希望的持续振荡。影响这些振荡状态的因素包括感应电机（IM）参数，死区时间，直流链路电容器尺寸，IM饱和度，输出电压，载波频率和IM速度。许多文献已经讨论了轻负载或低频工作条件下的不稳定性。已经提出了几种稳定这种系统的方法。但是，尚未完全描述不同功率水平下的不稳定性问题。本文分析了基于伏特/赫兹的工业ASD随功率水平变化而导致这种不稳定的原因。评估了2.2kW和15kW IM，以说明电机参数如何影响系统稳定性。此外，引入了一种新的减振方法来证明其在解决不稳定问题方面的有效性。它基于动态电流反馈，通过其磁通量对电流分量进行带通滤波和比例控制。通过电流反馈补偿前后的理论稳定性分析，通过20hp（15kW），380V，50Hz IM ASD实验系统对仿真研究进行了验证。

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