Muhammed Fasil

10 Questions 15 Answers 0 Followers

Questions related from Muhammed Fasil

How to select crossover frequency of a PI controller?

In shunt active power filter design, Kp and Ki values of PI controller for inner current control depends on crossover frequency. How can we select this frequency? What is the criterion to select...

13 November 2015 9,547 3 View

Difference between application of alpha-beta and dq0 transformation in design of active filters/power quality?

Why do some use alpha-beta transformation while others use dq0 transformation? Can anyone explain (if its because of my lack of understanding of both transformation applications)?

08 October 2015 9,798 8 View

Why is modulation index defined with respect to square wave operation?

mf=V1(sv)(phase)/m1square

15 July 2015 7,716 3 View

How can I simulate VSC Based HVDC for under modulation and over modulation?

What should i change inorder to simulate it in undermodulation and overmodulation and saturation modes? Is it Kpwm? I'm using space vector pwm technique with Kpwm*e^(-sTsw) as converter.

05 July 2015 2,890 2 View

How can I include space vector PWM converter in simulink just by using some gains? I've read that pwm converter can be modeled as a gain with a delay?

Space vector PWM= Kpwm * e^(-sTsw). What is the value i should give for Kpwm for space vector pwm? e^(-sTsw) is for dead time? And for dead time i should use switching frequency as T??

05 July 2015 2,190 1 View

Why am I getting different THD values for three phases while simulating 3 phase uncontrolled diode rectifier?

When i did FFT analysis for system i am getting different THD values for a,b,c phases for voltages and currents. Can anyone explain why. Will it be like that? If yes why?

25 June 2015 9,626 5 View

Why is there so much research on current control techniques in converters, not voltage or power controllers?

Please explain the significance of current control in PWM inverters

24 June 2015 2,677 5 View

How can I find supply current of a three phase diode rectifier with six diodes if dc output voltage is 260 volts and dc current is 10A?

Vdc= 1.654Vm where Vm is the peak phase voltage Idc= 1.654Vm/R where R is the load resistance, 26ohms

16 June 2015 2,098 7 View

DC output voltage of a 3 phase bridge rectifier is 1.654 Vm or 1.3505 V ll. Can anyone explain how

How

15 June 2015 8,861 5 View

What is meant by dq decoupling control strategy in Voltage source converter(vsc)?

Can someone explain me why this decoupling is required in simple manner? In dq vector control strategy a faster inner current controller is used and a slower outer control loop is used. Why "FAST"...

11 June 2015 10,031 5 View