Transformer Fault Current

Transformer Fault Current: What It Is and How to Calculate it?

To determine the transformer fault current we need to talk about one very important transformer parameter shoirt circuit impedence of a transformer. The meaning of short-circuit impedance The short-circuit impedance of the transformer is more often called the impedance voltage, and the symbol is Uk%.The measurement method of impedance voltage is to short-circuit the low-voltage

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Motors Used In The Mainstream Electric Vehicles

What Are The Types of Motors Used In The Mainstream Electric Vehicles?

Due to environmental protection, energy-saving, and the lightness of electric vehicles, electric vehicles have been paid more and more attention by various countries. At present, electric vehicles are in a stage of rapid development. As the core components of electric vehicles, electric vehicle motors mainly include DC motors, AC three-phase induction motors, permanent magnet brushless DC

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Induction Motor

Induction Motor: A Review

An induction motor refers to a motor that relies on electromagnetic the stator and rotor to induce a current in the rotor to realize electromechanical energy conversion. The stator of the induction motor consists of three parts: the stator core, the stator winding, and the frame. The rotor consists of a rotor core, a rotor

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Microgrid

Microgrid: The Key Concept

With the rapid development of the national economy, electricity demand has also increased rapidly, and the power grid structure has become increasingly complex. The traditional power grid structure of centralized power generation and long-distance transmission of large power grids is also facing more and more challenges. The cost is high, the operation is complex, and

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new EV battery from China.

A new EV battery from China can travel 1,000 miles on a single charge.

A Chinese company showed off a record-breaking electric vehicle (EV) battery on Thursday. It has a volume utilization efficiency of 72 percent, an energy density of up to 255 watt-hour/kilogram (Wh/kg), the world’s highest integration level, and can go more than 1,000 kilometers on a single charge. The battery, called Qilin, after a legendary creature

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Demand Response

Energy demand fluctuates throughout the day which impacts energy prices and costs you money, utilities must always have enough energy supply to accommodate consumer energy demand. Now imagine a really hot day when everyone turns their A. C. At the same time energy demand spikes, the grid gets stressed and electricity prices go up when

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Power System State Estimation

Power system state estimation is still a new branch of electrical power engineering, aged approximately three decades. Various research has been happening on this topic, but if I have to take a textbook to get a sound understanding, I would definitely take the book written by Dr. Ali Abur. It is concise and written in

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Smart Grid Technology: An Overview

The smart grid is a new technology that changes the way electricity is produced, delivered, and consumed. It’s the next step in the evolution of the electricity grid. The smart grid is a combination of the traditional grid and information technology. The conventional grid transfers electricity from power plants to consumers, and it’s based on

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