How to start PMSM motor in sensorless control technique ?

08 September 2016 5,241 7 View

How to design LCL filter for three phase grid connected system?

What are the advantages of LCL over LC filter and how to design LCL filter?

06 July 2016 1,461 1 View

How to get speed waveform from theta which is derived from estimated back emf ?

Hello researchers, I am implementing sensor less control of PMSM from estimated back emf technique. I am getting an angle in the range of o to 2*pi which is perfect, however when I try to convert...

05 June 2016 7,911 7 View

What is the difference between universal bridge (simulink block) and normal bridge (made by mosfet switches ) in simulink matlab?

In closed loop system when i connect inbuilt universal bridge (MOSFET /DIODE) then my model is working perfectly and system is stable as soon as i connect 6 mosfet switches (bridge by mosfets) the...

11 December 2015 4,216 3 View

What is the impact of simulation time over sample time in simulink (MATLAB)?

10 November 2015 1,755 9 View

How do I find pi control parameters for three phase grid tied inverter?

09 October 2015 7,359 0 View

How do I scale and calculate pi controller parameter for DQ control of three phase grid tied inverter?

09 October 2015 4,156 4 View

Why is the response of boost converter changed when I convert compensator from continuous to discrete?

09 October 2015 1,054 2 View

In dc/dc boost converter feedback, after designing type-3 compensator's transfer function, how can we tune it in matalb simulink model?

I am trying to simulate interleaved dc dc boost converter in simulink and I am currently working on feedback part. I have designed the type 3 compensator for voltage feedback.After deriving...

08 September 2015 6,940 4 View

How to decide compensation reference waveform for current mode control of boost converter ?

I am modelling boost converter for current mode control in simulink .How to decide the switching time and the values of slopes Se, Sn and Sf to generate compensation ramp reference for boost...

08 September 2015 8,185 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

What is involved in morphological changes of SEM images of a substance?

In the sem analysis of CaCO3 nanaoparticles, the morphology images showed spherical shaped particles but the proposed morphology for these type of nanoparticles is trigonal. I prepared the...

01 March 2021 1,960 4 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

How to define tie constraint between rigid body and another part in dynamic explicit model of Abaqus?

Hi dear researchers I connected a rigid body into the part of my structure by tie constraint and then I added displacement to rigid body, in static general step every thing is fine and these two...

28 February 2021 3,442 2 View