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# Induction Motor - Science topic

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Questions related to Induction Motor

I want to prepare data sets to train neural network to estimate 3 phase induction motor speed. I am using Denfoss make FC-302 AC drive to run 3 HP IM at different speed. I can export rms value of AC drive terminal voltage and phase current ,power,torque. etc to excel sheet.

From excel data (RMS voltage and current) i can implement abc-Alpha beta transformation in simulink. This alpha beta componentes of voltage and current can be used to obtain rotor flux . But i am feeling i am missing the phase relation when recording RMS voltages and currents.This may result in incorrect rotor flux value.

And also i am unable find Induction motor resistance ,mutual inductance and leakage inductance value in technical specification provided by the manufacturers.

The following two blocks cannot be connected in series:

Block 1: 'A_stator: Asynchronous Machine pu Units'

Block 2: 'phase_A: Three-Phase Series RLC Load'

The first block, modeled as a current source, cannot be connected in series with the inductive element of the second block.

Add a high-value resistance in parallel with one of the two block.

We are designing 3 phase squirrel cage induction motor for EV,

Our main aim is to get high efficiency, power factor,and breakdown torque...

How can I design by satisfying these three parameters...

What should I change /focus mainly in designing. ..?

What happen If rotor of induction have only rotor bars and without laminated iron core ?

It's common sense that the insulation of stator deteriorate when water enters in induciton motor. I want to know a more detailed process of the failure evolution. What's the main outcome when water enters in induction motor? Is it inter-turn short circuit, phase to phase circuit or short circuit to ground? Or is there an order of these faults?

Are there literature about this research?

Uncertainties and external disturbances such as load disturbance in controlling the speed of induction motor are the main factors for design controller.

1) Fuzzy logic is a Nonlinear system but PID is a liner system so the performance of fuzzy is better than PID

2)In an uncertainty system, nonlinear control is better than linear control

3)The output of the fuzzy logic controller can be controlled because of the fuzzy set

4)It is well known that fuzzy is more complex compared to PID and more computational but nowadays no issues with complexity. There are advanced microprocessor controllers such as DSpace 1104 and 1103. These controllers are fast with a large capacity of memory so no issues with computational of fuzzy. That is why simplified rules of fuzzy logic controllers are designed to reduce the computational burden of the fuzzy logic controller and the complexity of the system.

Hello

please i need help , i am trying to control an induction motor by the torque via the field-oriented method , however i couldnt be able to do it , if you have any ideas please im stuck

I'm doing research on FDD of induction motor. I want to know if there are datasets of faulty induction motor(normal, inter-turn circuit and broken rotor bras) recording stator phase voltage, current and rotation speed with different supply voltage frequency. It would be better if the electrical parameters(Rs, Rr, Lls, Llr, Lm) are given.

We know that there's T equivalent circuit and inverse Γ-equivalent circuit for 3 phase induction motor(IM). When the IM is operating under normal situation, the windings are symmetrical, so all 3 phases equivalent circuit should be the same, but when a fault occur to it—e.g., inter turn short circuit(ITSC) of phase A, the windings become asymmetrical. Is it okay to use equivalent circuit to reprensent each winding? Which means, same structure of equivalent circuit while the value of the parameters are different.

If it's okay, what should the input voltage to the equivalent circuit is? phase to phase voltage or phase to neutral point voltage?

I want to measure the stator phase voltage of induction motor——i.e.,the voltage between phase terminal and common point of stator winding. It's easy to do this when the motor is healthy since it equals to supply voltage, but when the windings are asymmetric, like ITSC fault occuring to the motor, the relation fails. I wonder if there is a way to measure stator phase volatge in self built ITSC fault induction machine model in matlab Simulink? Or there's other simulation productis which can make it?

Please, I need help

I want to run a simulation using the Simplified Induction Motor block in Simulink, the block ports are physical ports, so I used the PS-Simulink Convert and Display to see the simulation results, but the Simulink showed me an error of the configuration model. I attached an image of the configuration model.

I'm recently making research on induction motor parameter identification and found a research matching my purpose, but I don't know how to build this "ABCabc model of an induction motor", which is the key to get the caculated current. Does anyone know this model of induction motor?

I attached the picture mentioning this phrase and the full text as well. It's from Dr. Ahmed M.Alturas.

One more thing worth mentioning is that Dr. Alturas proposed the method to get the electrical parameters of the induction motor under steady state without the need of prior knowledge. I tried to implement his algorithms but failed. I've tried the transfer funciton model and electric circuit model of induction motor under steady state, but the parameters didn't converge. I feel like the model is the key. Once this ABCabc model is used, it'll converge.

Hello guys,

I am doing a research on speed control of induction machine using chattering free sliding mode controller. The controller is working very well when a constant speed is given as a reference. But when the reference/setpoint is changed to variable reference speed, the controller is unable control the speed after the first sampling time. If you have any idea about it, can you help me? please.

I have seen that almost all four-wheeler commercial vehicles or power requirements over 10 kW, PMSM or Induction motors are used. Is the reason behind this is more torque ripple and lower speed range of BLDC motors? What are the other reasons?

But if I want to use a BLDC motor for a power requirement of around 40 kW in an EV, considering better power density, what are the disadvantages that can be faced. What are the other advantages of BLDC that can support its application in this case?

Is there any commercial EV that is using a BLDC motor for the power requirement range of 30-50 kW?

Hello! Kindly guide from where I can get datasets for Induction Motor Rotor Bar fault detection? Specifically does any one have access to data from LAII Laboratory of University of Poitiers (France)? It is not accessible through the link http://laii.univ-poitiers.fr/ given in the paper: Mario E. and Ali C. (2005). BROKEN BAR DETECTION IN INDUCTION MOTORS - Using non intrusive torque estimation techniques. In Proceedings of the Second International Conference on Informatics in Control, Automation and Robotics - Robotics and Automation, pages 144-149, DOI: 10.5220/0001156901440149

Copyright SciTePress

I want to know what is the current research is going on in the field of vector controlled induction motor drive....suggest some useful applications....

focus on indirect field oriented control

math lab simulation little description

result analysis

if possible please send me to mahe.nani64@gmail.com.

thank you

I have implemented Switching table based direct torque control of three phase induction motor. But now i want to implement virtual space vector based direct torque control and for that purpose i have prepared two switching tables. now in order to form virtual space vector i need to apply two vectors in one switching time . That is for 0.73 Ts (sampling time) we need to apply output of one switching table and for remaining 0.27 Ts(sampling time) we need to apply output of second switching table. how we can do this in MATLAB/Simulink?

My sampling time = fixed step size = 2e-05.

(Serious and active members are required.)

My research fields are Renewable energy, PV systems, wind energy systems, multilevel-inverters, observers and state estimation, induction motor fault detection, and diagnosis.

- Write and publish research papers together

- Split the publication cost (APC) together if necessary.

Sensorless Control of a Doubly Fed Induction Machine Based

on an Extended Kalman Filter

Improved Sensorless Control of Doubly Fed Induction Motor

Drive Based on Full Order Extended Kalman Filter Observer

I am trying to use the advanced PID controller(auto-tuning) to control the speed of induction motor drive with FOC. I would like to ask how to get the transfer function for the induction motor and inverter by system identification method. anyone can give me useful information.

Hello Community,

Do you have any idea or suggestion about, how to create Slip and Slide at Motor Shaft on No load Standalone setup for Induction motor ?

Shall i connect another Controlled motor at Test Motor Shaft with different torque (i fear of breaking shaft)

Or some else suggestion ??

Rotational loads are definitely linked to the reactive power readings in distribution network.

Are there any direct or indirect relationships derived between the two?

I am madhav kumar, I have competed B.Tech (Electrical & electronics ) from Techno India in 2017 and masters in power electronic specialization from Birla institute of technology mesra Ranchi in 2019.

After my masters degree, I started trying for a government job. But due to Corona there was no vacancy and my age limit also expired. Now I want to go further with research. But I can't understand anything, what should I do?

My masters degree project is "Parameter estimation and implementation of maximum power point tracking algorithm for solar photovoltaic system".

I have also done "V/F control of Three phase Induction Motor" with my partner.

I have published 3 IEEE conference paper.

Please give me a proper suggestion and help which is good for my future??

I'm working on an induction motor drive with a scalar controller. As inverter modulation, I utilized both SVM and SPWM. I discovered that if the frequency and output fundamental voltage from SVM and SPWM are the same, the THD is about the same. The result can be seen in the image attached herewith. Can anybody explain why the THD is the same? Is THD only determined by the amount of fundamental voltage generated? Any literary references would be much appreciated.

If we design Single phase inverter or Three phase inverter with Induction motor as Load,

What do you think about DC Link ?

Shall DC Link be a storage Capacitor or simply Harmonic Elimination Capacitor ?

How Capacitor Should be selected ? Based on voltage or Capacitance and type of capacitor ?

Hi friends

In open Loop control of interior PMSM/Induction motor how will give excition vd, vq and any mathematics is there inside to give vd ,vq

Can you send me any related to paper .

Any available studies about the control of Permanent Magnet Induction Motor/Generator?

Hi Friends ,

1.What is the reason of Vd=0, Vq=1, in surface PMSM and Vd=1, Vq=1 Interior PMSM, Induction Motor ? behind that any back ground

can you explain....

In MATLAB simulation of MRAS EMF based speed estimator block of 3 phase Induction motor pure integrator is replaced by first order low pass filter. How to select correct cut off frequency of first order low pass filter. is cut off frequency selection is important in speed estimation block.

To obtain dq components of the inverter voltage for unity power factor correction of a 3 phase induction motor

What is the modulation index (m

_{a}) which is mentioned in the 2.2 equation?I understand that MSCA detects fault characteristic frequencies and evaluate it through subtracting the magnitude of main frequency with the magnitude of fault characteristic frequencies in dB scale. And the lower the difference the more serious the fault.

But I want to know that is there any severity index to consider how the level of fault is, such that the category of low, medium, and high can be made?

I have designed 17 level 3 phase CHB MLI. Giving THD less than 5% for R and RL load. But when I apply it to induction motor load, I can see a voltage spike (to max volt) near each zero crossing. ( For each phase voltage). Which increases THDv to 30%. What parameters of motor may contribute to this?

Hi everyone, I have problem with state space model of DFIG, the state vector formed by currents in (d,q) frame and input vector formed by voltages in park frame and the output vector is composed of currents (ids, iqs, idr, iqr), when i model the dfig with explicite equations in the park frame (d,q) it s ok but once i use matrices to make the state space model it doesn't works please what can be the problem ?

In a single-phase uncontrolled rectifier fed VSI driven three-phase induction motor, the dc-link voltage reduces under loading condition of induction motor drive. How to select the optimum value of the dc-link capacitor to maintain the dc-link voltage constant over the entire range of the induction motor?

Hi! Want to Simulate an Induction Motor using Simulink for generating normal / inter turn short circuit fault data for my ML based fault diagnosis system. Desire a model that incorporates saturation & iron losses in addition to variations in parameters to get realistic data for training my model. Help & guidance requested. Thanks.

I am working in speed sensor-less control of induction motor and for estimation of speed i have used sliding mode observer. Using SMO I have estimated alpha-beta axis stator current and alpha-beta axis rotor flux accurately. though I have estimated currents and rotor fluxes accurately, I can not estimated speed. Is there any one who can help me with this issue?

I have also added the images of results that i have obtained.

I am working on speed sensorless direct torque control of induction motor and for that purpose I have estimated rotor flux accuratly now I want to estimate speed from rotor flux and is there any one who can help me to do so?

The speed estimation of induction motor at low speed is not precise and this affects the sensor less control of induction motor . I like to know whether the above limitation affect performance of Electric Vehicle when the sensor less induction motor is used to drive vehicle

Hello,

at the moment i am trying to make in simulink an induction motor with vector control. I have a model of an induction motor and the model of the vector control. My problem is the tuning of the PI-controlers for the speeds and for the velocity.

Are there some calculation methods to determine the values?

My interest is especially in the tuning of the two PI-controls for the current. Should the paramter of this controls be calculate successively or at the same time?

Thank you in advance!

I am working on the project of developing an algorithm for stator inter-turn failure diagnosis. For that, I am looking for online available data of the current signal from the faulty machine.

I have the battery and supercapacitor connected to an isolated Bidirectional DC DC converter i want to know how to simulate the converter system for an induction motor drive .I want to use the phase shift and duty cycle control ,I also want to show the starting acceleration ,coasting and braking models of EV using induction motor drive

I want to research over using VFD in booster pumps and I wonder what is exact

relationship of power and frequency and how hange in frequency afffect output power and torque of motor pump? I really appreciate any more information

I want to tune pi controller for multiphase induction motor drive but the torque and speed oscillates around set point and that oscillations is irregular and output of PI controller is also oscillates.

how to tune it to remove oscillations?

I have also attached the pic of responses.

please help

How to check for different unbalance conditions and effect of positive and negative sequence voltages on efficiency and power factor of induction motor?

I have gone through some papers related to DTC for five phase induction motor. And trying to simulate the circuit with their specifications using Matlab/Simulink.

But got stuck with feedback torque and flux that used to generate SVM .

I have designed a 9-level inverter which was used to derive a single-phase induction motor. when measuring the THD, I found that the current THD is higher than the voltage THD as shown in Figures below. Current THD is 11.6% and voltage THD is 8.8%. Is there any reason why the current THD is higher than the voltage THD? Thanks a lot

I am currently researching the effects of an increased air gap in an induction motor.

So far i am able to calculate the approximate difference in efficiency, power factor and thus the nominal current. However i am struggeling with the Starting current/torque and the break down torque.

I know the reactances of the motor will decrease. But i have found some (old, from the eighties) equations on these torques, both give an inverse dependence on the reactances. This indicates an increase in starting and breakdown currents, which i know is incorrect.

According to my data they both should decrease, i am know searching for a way to accuratelly predict the decrease, preferably without the use of programming or special software. This is because the company i'm working does not have the licences for such programs.

Hi, I want to calculate the circuit of thermal resistance of an induction electrical motor.

In some reference they draw circuit that shown resistance. like attached picture.

Now i have a question about it:

1- how many resistant must be consider in parts, like shaft, rotor, stator and ...

Thanks for your attention

I am trying to simulate conventional direct torque control of six phase asymmetrical induction motor drive. but it does not give appropriate results and i have tried to rectify the error but cant identify it. Is there anyone who can help me to to identify the error? if you wish i can also provide the model as well....

I am working on the speed control of the induction motor. I am using a Quadrature encoder having two inputs QEPA and QEPB and having a resolution of 48ppr. code is generated through an embedded coder in MATLAB/SIMULINK. But I can't able to measure the speed properly. I have gone through the many articles, every article mentioned about the encoder having three inputs QEPA, QEPB, and Index pulse. Can anyone suggest me how to calculate the speed of induction motor having two inputs from the encoder

I am trying to tune the PID controller for FOC of Induction motor using the control system tuner app but i got the error mentioning that " Linearizattion resulted in a system that can not be tuned , you may try the different operating points". I have also tried many different operating points but the same error is repeated , please suggest solution to this problem

Hi all, I am trying to run a co-simuliation between Simulink and Simplorer. In Simplorer, simulation is successfully completed but Simulink reports an error.

Has anybody experience with this problem?

What are the pros and cons of existing induction motor inter-turn short-circuit fault diagnosis methods? i.e. motor current signature analysis (MCSA), flux monitoring, air-gap torque monitoring, vibration monitoring, thermal monitoring. Which one has been extensively used in real industry applications (for what reasons)?

My project about speed control of induction motor using PID and ANN controller comparision but i am unable to get the ANN controller based induction motor speed control . so any one there please help me.

Thank you in advance

My name is pavan. I am recently working on project in my under graduation known as speed control of induction motor using AI controller . For that I need speed control of 1 phase AC induction motor using PID controller values by which I can train my controller. So, I am hoping that I would get this model and train my controller there by completing my project as soon as possible.

Thank you in Advance.

Hello,

I want to check DC Link stability connected before inverter and 3ph Induction motor.

If i change Torque and Speed of Motor and check DC Link, there might be some variation in DC Link. Am i right ?

Question is: How to check stability of DC Link ? Any method ? Mathematics ? Plots ?

I am trying to simulate FOC of Induction motor with SVPWM using MATLAB Simulink. In the motoring mode, the current is pure sine wave with desired frequency but in generating mode, the harmonic content is very high. What are the possible reasons and correcting action to rectify this problem?

Hello... I need the detailed specs for the following motors for laboratory set up:

1-Six phase induction motor

2-Five phase PMaSynRM

3-Five phase switched reluctance motor.

So does anyone has these specs?

I am trying to simulate FOC of Induction motor with SVPWM using MATLAB simulink. It is working accurately in the motoring mode but in generating mode, there are notches of small magnitude at the regular interval. What are the possible reasons and correcting action to rectify this problem?

Hello All,

I think: For speed control of 1ph AC Induction motor

**I Guess below is correct thing**

DC Source --> Boost Converter with Single IGBT --> Z Source Inverter ---> 1ph Inverter with 4 IGBT --> 1ph Induction motor

Here i set some reference speed & compare with Actual speed and apply PID controller and Control PWM of Inverter.

**I have doubt in my Second assumption. Please tell me is it correct ?**

DC Source --> Boost Converter with Single IGBT --> Z Source Inverter ---> 1ph Inverter with 4 IGBT --> 1ph Induction motor

Here i set some reference speed & compare with Actual speed and apply PID controller and Control PWM of Boost Converter IGBT. (I keep Fix PWM for single phase inverter)

I want to identify Induction motor Air-gap eccentricity fault. According to the formula of finding Air-gap eccentricity fault, I should get the Air-gap eccentricity fault at 1728 sampling Hz but its not appearing on this frequency

I am trying to tune a pid controller using pid tuner app in MATLAB simulnik for indirect field control of induction motor, it shows the error that, "sample time is small as compared to response time. response plot is trucated due to too many data points" what should i need to do to rectify this problem?

As we know initially PF in case of induction motor is lower, but after some time PF becomes improve. Can any one explains that how we can improve the PF instead by using the parallel capacitor bank?

The idea is to power the electric vehicle with a 48 V battery. An inverter may be used to produce 3 phase voltages to power the induction motor which is designed for 48 V.

The signals for induction motor current are plotted in frequency domain using MATLAB.

I attached the plot for more explanation.

Hello,

I am working in a project to detect stator inter turn fault where I need a working mathematical model of squirrel-cage induction motor in matlab code, can anybody provide pointers...

I need a Matlab Simulink model of single phase induction motor ? Can anyone help me in this regard?

Hello;

Is it possible to apply the energy management for DTC controlled induction motor drive?

Thanks and best regards

I have simulated the 0.37KW capacitor start induction motor in ansys maxwell RM Xprt. Its efficiency is 45% (percent), results attached. These are no load results. I have few questions

How to perform the on- load analysis of motor using RM Xprt or 2D analysis?

How to optimize the winding design, wire size and no of turns etc.?

How to select the starting capacitor for this motor?

How to select the rotor shape, its dimensions and torque optimization?

How to increase the overall efficiency to fulfil the IE1 and IE2 standard?

Simulation results shows that stator losses are 129watt, thats hufe losses in 373 watt motor, How can I reduce it ?

How to select the switching time of auxilery winding ?

Any paper, books, tutorials or presentation or videos that can help me in this regards. Please share

Your kind support and recommendation will be highly appreciated.

Thank you

I was trying to research about an automatic phase splitter project for 3 phase induction motor but Google will give me results for automatic phase inverters. When i tried to find the definition, it confused me and i couldn't point out their difference.