A MATLAB application for monitoring the operation and power quality of electrical machines

Abstract

Efficient simulation and control tools for electrical machines is an important issue for engineering education and research. This paper presents a MATLAB application to characterize and analyze the electrical-mechanical behaviour of electrical machines. The study is carried out in the laboratory of the University of Almeria (Spain) and has been specifically designed to monitor the operation and power quality of electrical machines. It consists of several test benches that allows different configurations for the electrical machines in the laboratory. The electrical machines are controlled using an automated and adjustable frequency AC drive. The MATLAB application communicates with the adjustable frequency AC drive via standard industrial communication protocols and opensource libraries in realtime in order to adjust some input parameters (start, stop, motor speed, etc.) Furthermore, the application displays some important output parameters, such as the RMS voltage, RMS current, active power, speed and torque. In addition, this framework is also designed to monitor power quality and to analyze the operation of the electrical machines, including the chance of applying advanced techniques for prediction and correction of rotating electrical machines maintenance.

Current Status and Future Trends of Power Quality Analysis

“…In addition, although the most common network faults are still mostly single events, there is a clear trend towards the combination of sag (usually considered the most common disturbance [32,64,65]) with harmonics or transients. Furthermore, by carefully analyzing the data, the number of papers in which harmonics are located as signal disturbances ( 73) is slightly higher than the number of papers that include sags (71), displacing the last one to second place in most common disturbances.…”

“…Energies 2022, 15, x FOR PEER REVIEW One last point would be the instrumentation used to collect data from the real Although many researchers opt for the use of commercial instrumentation (44 p the high cost that this device entails, or the difficulty in programming with compl rithms with them have forced some studies to use instrumentation designed by searchers themselves [28,[71][72][73][74][75][76][77][78][79]. Indeed, [71,[73][74][75][76]79] both focus on explaining i how the design for power quality data collection is carried out.…”

Understanding Power Quality using IoT-based Smart Analyzers and Advanced Software Tools

“…For example, MATLAB/Simulink is applied in [4] to simulate transients in linear high-order electrical circuits. Other authors have designed a MATLAB application for monitoring the operation and power quality of electrical machines [5]. In [6] it is proposed the use of MATLAB/Simulink to simulate power quality disturbances in power systems, including three phase faults and switching of large load to simulate voltage sag, removing of large loads from system to simulate voltage swell, three phase nonlinear load to simulate harmonics at the load side, or switching of large capacitor bank to simulate voltage transient at the transmission bus, among others.…”

Practical Transient State Assessment for Induction Motors Starting in Medium Voltage Networks

“…Due to its numerous uses and importance, it had the attention of researchers over the years [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In [5], the aspects of motor design are discussed illustrating its effects on starting period and the lifetime expectancy.…”

“…In [15], MATLAB simulations are introduced to help in the assessment of transient state of induction motor. In [16], a MATLAB application is introduced to monitor the performance of electric machines. In [17,18], good models for induction motor are presented then the performance of motor driving a pump load is analyzed and sketched.…”