Tricky but Easy Electrical Engineering!
Books are lifeline of Students. In fact, both are related to each other. Without books we can’t think of Students and without students, there is no use of Books. Unfortunately, Books only provide the detailed concept of the subject matter. You need to make your own strategy based on your interest & goal to get … Read more
Electrical Machine is a very important subject for Electrical Engineers. Being an Electrical Engineer, we can never ignore this subject. Many engineering student find this subject tough due to lack of proper and understandable explanations given in the book. They either search for the Best Book for Electrical Machine or consult their college professor to … Read more
Class-B or Resonant Pulse Commutation is a forced commutation technique to turn off an SCR. In this technique, thyristor or SCR is turned off by gradual build-up of resonant current in the reverse direction i.e. from cathode to anode of SCR. This technique is also known as current commutation and occurs in DC circuit not … Read more
Load commutation of SCR is a forced commutation technique in which SCR is forced to turn off. Turning off an SCR essentially requires its anode current to fall below holding current and a reversed biased voltage must be present across SCR for sufficient time so that SCR may regain its blocking state. Load Commutation of … Read more
Commutation in Power Electronics refers to the process of commutation of SCR. Whenever we talk of commutation in power electronics, we simply mean the process to turn off an SCR. This article details about the commutation of SCR, Natural Commutation, Forced Commutation and various types of Forced Commutation techniques. What is Commutation of SCR? Commutation … Read more
Double Bus Single Breaker Scheme is also known as Main cum Transfer Bus Scheme. In this scheme, two bus bars, four Isolators / Disconnect Switch, One Earth Switch and one Circuit Breaker is used in one Bay for switching purpose. What is Bay? You will come to know this terminology latter in this article. This … Read more
There are various methods to turn-on a Silicon Controlled Rectifier (SCR) or thyristor. But the most common way to turn-on an SCR/Thyristor is the application of Gate Signal to a forward biased SCR. This method of turning on an SCR is called Gate Triggering. In this post, we will discuss the various condition required to … Read more
It’s chilling summer and most of us might be planning to purchase AC and doing internet research. But the main thing which comes to our mind is the power consumption of AC. As this have a significant effect on our pocket. This post outlines, EER (Energy Efficiency Ratio), ISEER (Indian Seasonal Energy Efficiency Ratio) and … Read more
Induction motors are widely used in industries to meet various requirement. This can be realized by that fact that, around 90% motors used in industries are Induction motors. The motors plays an important role in the plant process and failure or outage of motor may lead to loss in production or may even hamper the … Read more
Locked Rotor current and Starting current of induction motor seems to be the same thing at first glance but it is not so. These are two different terms having different meaning and significance. In this post we will discuss the difference between the locked current and starting current of induction motor. Locked rotor current is … Read more