Elimination of Common-Mode Choke Saturation Caused by Self-Resonance of the EMI Filter in a Variable-Frequency Drive System

2019 ◽  
Vol 61 (4) ◽  
pp. 1226-1233
Author(s):  
Henglin Chen ◽  
Jiayang Wu ◽  
Xiaoyan Zheng
Keyword(s):  
Drive System ◽  
Variable Frequency ◽  
Common Mode ◽  
Variable Frequency Drive ◽  
Emi Filter

Radiation Disturbance of Variable Frequency Winch Drive System in Underground Coal Mines

2013 ◽  
Vol 441 ◽  
pp. 552-556
Author(s):  
Hui Chen ◽  
Wen Bing Tang ◽  
Zhen Guan Cao ◽  
Hua Ping Zhou
Keyword(s):  
Field Strength ◽  
Electromagnetic Radiation ◽  
Frequency Converter ◽  
Coal Mines ◽  
Drive System ◽  
Radiation Environment ◽  
Regulation System ◽  
Variable Frequency ◽  
Variable Frequency Drive ◽  
Underground Coal Mines

In order to study the effect of variable frequency drive system upon electromagnetic radiation environment in underground coal mines, the mechanism of electromagnetic radiation from the variable frequency speed regulation system has been analyzed deeply, and the radiated electromagnetic noise from the variable frequency winch system with rated voltage of 1140V in underground coal mines has been measured. The measuring results show that the radiated emission from variable frequency drive system has certain effects on electromagnetic radiation environment in underground coal mines. The maximum radiated E-field strength reaches 123dBμV/m within the range of 9kHz to 20MHz nearby the frequency converter, and radiated E-field strength is no more than 33dBuV/m above 20MHz. Nearby the winch motor, the radiated E-field strength is weak, but the frequency spectrum of radiated E-field noises is more wide, which mainly distributes from 20MHz to 1GHz, but the maximum radiated E-field strength is less than 37dBμV/m above 20MHz.

Common Mode EMI Filter Design for Si and SiC Inverters in an Aerospace Drive System

2019 ◽  
Author(s):  
William Perdikakis ◽  
Mark Scott ◽  
Chase Kitzmiller ◽  
Bailey Hall ◽  
Kevin J. Yost ◽  
...  
Keyword(s):  
Filter Design ◽  
Drive System ◽  
Common Mode ◽  
Emi Filter

Design ADRC for Cutter Suction Dredger Cutter Motor Variable Frequency Drive System

2014 ◽  
Vol 1008-1009 ◽  
pp. 650-653 ◽  
Author(s):  
Ming Bai ◽  
Jin Hua Chen ◽  
Cheng Ning Xie ◽  
Fang Hui Li
Keyword(s):  
Virtual Instrument ◽  
Design Method ◽  
Harmonic Distortion ◽  
Speed Control ◽  
Mathematic Model ◽  
Drive System ◽  
Variable Frequency ◽  
Fundamental Wave ◽  
Variable Frequency Drive ◽  
Labview Platform

In order to achieve precise speed control for cutter suction dredger cutter motor, the controller should adapt well to uncertainties, such as geological environment, water flow, mechanical disturbance, etc. It makes the design of cutter motor controller always a hard work. This paper proposes an active disturbance rejection controller (ADRC) approach for cutter suction dredger cutter motor variable frequency drive system. Firstly, the LabVIEW platform was established by virtual instrument technology, which collected operating data of cutter motor in fundamental wave and total harmonic distortion (THD). Then cutter motor motion mathematic model was built and the ADRC design method was introduced. Lastly, the simulation results in the cutter velocity control and disturbance environments were done. The results show that the ADRC controller has strong robustness, and the precise speed control can be implemented.

scholarly journals MATLAB /Simulink Modelings and Experimental Design of Variable Frequency Drive for Speed Control of Three-Phase Induction Motor

2019 ◽  
Vol 8 (2) ◽  
pp. 3046-3052
Keyword(s):  
Induction Motor ◽  
Continuous Process ◽  
Speed Control ◽  
Drive System ◽  
Variable Frequency ◽  
Inrush Current ◽  
Variable Frequency Drive ◽  
Matlab Simulink ◽  
Three Phase ◽  
Wide Range

This paper presents the PWM (Pulse Width Modulation) based speed control of three-phase asynchronous (Induction) motor. Induction motor is the leading machine used in many industrial controls, automation processes and in the field of HVAC applications. However, induction motor has fixed rated speed when directly connected to ac supply. It is necessary to design a drive system to obtain variable speed at its output to fulfill the application requirement. For this reason, we have designed a “VFD (Variable Frequency Drive)”, which gives desired speed- according to load changes unlike the DC motors, which do not require any speed controlling drive. Currently with the technological elevation in drive systems, the speed control of induction motor is more economical, convenient, reliable, and accurate. It provides continuous process control over a wide range of speed. VFD not only controls the speed of induction motor but also make its starting smooth by reducing starting inrush current and improves power factor. In result, power consumption is also reduced. In this paper, we have designed and analyzed the MATLAB/Simulink model of open loop drive system and then implemented an experimental hardware design.

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