What are reasons of dc offset current in grid connected inverter?

I am working on grid connected Active Front End Converter - Inverter system to achieve unity power factor with reduced voltage and current THD. Some dc offset current has generated in spectrum...

02 March 2018 1,489 5 View

How to overcome current commutation problem in matrix converter?

Matrix converter is an AC-AC converter and it consists of bi-directional switches and these pair of switch are connected either in common emitter or common collector mode. Two different issues in...

11 December 2017 161 3 View

How can I determine the switching time of 2-level voltage source inverter using 'Space Vector Pulse Width Modultion' ?

There are six sectors in SVPWM. For each sector, switching time are different. During the switching time calculation, switching frequency should be equal to the frequency of each sector. How to...

11 December 2014 6,138 3 View

How does mounting of a fly-wheel help in load equalization?

If loads are fluctuating in nature then fly wheels are mounted on the motor shaft. How does it work in load equalization?

31 December 2013 6,511 5 View

What do you mean by quality factor of a coil?

Why can't a Maxwell bridge be used for measurement of coil whose quality factor is more than 10?

02 March 2013 1,794 2 View

How can I simulate DC & AC servomoto in MATLAB?

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02 March 2013 6,707 0 View

How to simulate synchro in MATLAB?

Synchro is used in error detection. Can anybody help me in the MATLAB simulation of synchro?

31 December 2012 1,249 1 View

How to develop MATLAB coding for generation of random variables?

Generation of random variables for the Particle Swarm Optimization technique. The number of variables may be 5, 6, or 7. Condition is that theta(1)

07 August 2012 1,771 5 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View

Helix antenna coupling problem?

Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...

21 February 2021 4,453 3 View

Why are the modelled and circuit system different in response for controlled buck converter?

[Images are attached at bottom] I am currently working on a buck converter controlled by two different control methods, Reinforcement learning applied to find PID values & a lead-lag...

16 February 2021 5,060 10 View

Is there a way to use waveguide ports for circular antenna design in CST?

Hi, whenever i use circular array i get this error "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solver" Does anyone use circular array with waveguide ports?...

09 February 2021 3,609 8 View

How do I connect DAB DC DC Converter to a battery in matlab simulation ?

I am trying to model a DAB converter and I need to observe the power transfeered to the load side on varying the phase shift between two bridges, hence I couldnt take a constant load e.g...

09 February 2021 6,489 3 View

Can explain this diagram to me, is this the average consumption curve for one day or the total consumption of days in a month summed up in specific?

The hourly load curves of the selected household in each season are shown in Fig. 28. Figure 28 shows the demand for electricity in four months on an hourly basis. Can you explain this diagram to...

08 February 2021 657 16 View