Eddy current

control complexity in application. where no isolation and high output current with low ripple. An No isolation DC/DC converter Fig.1.1 shows the step-down DC/DC converter. When switch M is on for the duration of dTs, power is transferred from source to load and filter inductor L is charged. When switch M is off for a duration (1-d)Ts, the diode D becomes forward-biased and forms a conduction path for the filter inductor current. The voltage across the filter inductor is the reverse of the output…

Rotor and touchdown bearing models Fig. 1 features the case study of the high-speed rotor. The photo was taken after manufacturing of the electric motor part, when the rotor was carried to the laboratory for an experimental modal analysis. During normal operation, the rotor is supported by AMBs. In the dropdown event, the rotor is in contact with touchdown bearings at both ends of the rotor. Fig. 1. Rotor under investigation. In this work, the finite element model of the rotor employs…

is hard not to compare the two. They worked for years creating and perfecting their various inventions. Edison is best known for creating a commercially viable light bulb, and Tesla is remembered for his contributions to the design of alternating current electricity. Though Edison is more well known, both men contributed greatly to the field of electrical science and should forever be remembered. Thomas Edison was born on February 11th, 1847. He grew up in Milan, Ohio, and later moved to…

When To Call An Emergency Electrician When it comes to electrical issues, you never want to wait to get them fixed. Even if an electrical issue seems harmless on the surface, by letting the issue go unfixed you are actually putting you and your family at risk (and possibly other people if the issue results in an electrical fire that spreads). But, what exactly constitutes an electrical emergency? Realistically, you should always get an electrical issue looked at ASAP no matter how small, but…

2.5PRODUCTS AND SERVICES PROFILE The products and services of L&T’s Electrical & Automation are:  RELAYS Larsen & Toubro offers a wide range of Protection, Control & Monitoring Relays. These are Numerical relays suitable for Low Voltage & Medium Voltage power distribution system. These are manufactured at L&T’s Mysore Works equipped with modern infrastructure and employing latest testing equipment.  SWITCHGEAR PRODUCTS Larsen & Toubro Limited is among the major manufacturers of low voltage…

In essence, Tesla coils are a high-voltage, resonant transformer circuits. They consist of the six major components (Behrend 1), namely: Primary transformer Tank capacitor Spark gap Primary coil Secondary coil Toroid Figure 1: Tesla coil (diagram) A primary transformer is a step-up transformer that takes the line voltage of the AC source and steps it up to a range between 12 kV and 50 kV at 60 Hz (Johnson 4). The efficiency of this transformer is largely dependable on the construction…

Nikola Tesla The inventor Nikola Tesla lived from July 10, 1856 to January 7, 1943, he was a well-known engineer who designed the alternating-current (AC) electric system. He was born in what is now Croatia; he came to the United States in 1884 and worked for Thomas Edison for a while before they both went their separate ways. Tesla sold several patent rights to George Westinghouse; one of those was his AC machinery. During Tesla’s career he discovered, designed and developed ideas for a number…

Did you know that Alexander Graham Bell invented the telephone? Alexander was constantly working on scientific experiments and he became a famous man. Now, hundreds of thousands people can communicate through phones. Bell also worked on a school to help the deaf to enroll. His invention helps life today because we can now communicate through technology called the telephone. Alexander’s Father established a school for the deaf to learn and Alexander also helped the deaf learn. He also inspired…

Damping to Solar Irradiation When solar irradiation increases, the PV array would equip the PV inverter with more voltage.The output current of the PV inverter should be increased to acquire more power from the PV array. To relieve the tracking error for the high-irradiation case, a high value of χ compared to Test 1 should be taken up. The best method to decrease the current deviation is to alter χ to decline the control gains to adapt PV inverter to the changed solar irradiation. The…

of 1A current. 12 V output of the step-down transformer is the RMS value and its peak value is given by the product of the square root of the two with RMS value which is approximately…