Iman Sadeghkhani

6 Questions 15 Answers 0 Followers

Questions related from Iman Sadeghkhani

What is the Criterion for Symmetrical Components-based Directional Protection?

Normally, for a forward fault, phase difference between voltage and current of relay (theta) lies between -90 and +90; and for a reverse fault, theta is outside of this range. Some works, however,...

03 June 2016 2,947 6 View

What are the main advantages and disadvantages of different reference frames for the converter control?

I want to know that where should each frame (stationary, synchronous, natural) be used (in both three-wire and four-wire systems)? Please consider in your answers both balanced and unbalanced...

04 May 2015 4,497 8 View

Why is the air gap in a synchronous machine larger than in an induction machine?

08 May 2013 9,327 13 View

How can we calculate rate of change of frequency (ROCOF) in DG applications?

This parameter is used for recognition of islanded networks.

30 April 2013 1,888 8 View

Which indexing service does present better evaluation? ISI or Scopus?

Or other indexing service?

28 April 2013 9,588 63 View

What are the main characteristics of stoarge devices (batteries) of PV systems?

Or major different of these batteries with other types?

05 April 2013 4,173 7 View