IT WORKS ON MUTUAL INDUCTION
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To be a superior Electrical Engineer with splendid capabilities in the real field the person must have a crystal clear idea about the transformer. This powerpoint slide will help students & enthusiasts to understand with adequate pieces of information.
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IT WORKS ON MUTUAL INDUCTION
- 1. “IT WORKS ON THE PRINCIPLE OF MUTUAL INDUCTION” Postulate of a transformer in transference Course name- Physics-ll Course code - PHY102 Submitted to- Sakia Shabnam Kader Madam
- 2. Presenter Name- Ismat Jahan Nabila ID- 172-33-3993
- 3. What is transformer? An apparatus For reducing or increasing the voltage Alternating current An electrical device Transfers electrical energy Between circuit Electromagnetic induction Parts of transformer? Two coils of wire Primary winding secondary winding Core material Enclosure-protects internal components
- 4. History of transformer Ottó Bláthy Miksa Déri Károly Zipernowsky Developed iron core transformer ZBD model Manufacturing company Ganz-1878 Ottó Bláthy (1860-1939) Miksa Déri (1854-1938) Károly Zipernowsky (1853-1942)
- 5. The basic principle of a transformer A transformer consists of two electrically isolated coils and operates on Faraday's principal of “mutual induction”, in which an EMF is induced in the transformers secondary coil by the magnetic flux generated by the voltages and currents flowing in the primary coil winding. Michael Farady (1791-1867) EMF is a sinusoidal voltage is applied to the primary winding of a transformer, alternating flux ϕm sets up in the iron core of the transformer. This sinusoidal flux links with both primary and secondary winding. The function of flux is a sine function. According to these Faraday’s law, "Rate of change of flux linkage with respect to time is directly proportional to the induced EMF in a conductor or coil".
- 6. Step-up transformer Increases voltage from primary to secondary Uses at power station Produces very high voltages Too dangerous to use at home Types of transformer Step-down transformer Increases voltage from secondary to primary Less turns on the secondary coil Reduces voltage High voltage-low voltage Low current-high current
- 7. Working principle of step-up transformer
- 8. Where step-up transformer is used? The small step-up transformers can be used in electronic and electrical devices where the voltage boosting is required. But nowadays in the modern electronic device, power electronic circuits are more frequently used because of weight and dimension.
- 9. Working principle of step-down transformer
- 10. Where step-down transformers are used? All the street transformers which we see near our homes are step down transformers. They take a 11kV alternating voltage at the primary and convert it to 230V for distributing it to our homes. Before the wide usage of switching power supplies, almost all low voltage wall adapters use step down transformers.
- 11. Why do we need step-up transformer for long distance transmission? Produces high voltage to transmit electricity High voltages improve efficiency Reduces heat loss in power lines Too dangerous for residence Practical Economical Safe Power system network Utility power plant Step-up transformer Transmission tower High voltage Transmission Lines to substation
- 12. Power plant generates electricity Transformer steps up for voltage transmission Neighborhood transformer steps down voltage Transmission lines carry electricity long distances Distribution lines carry electricity to houses
- 13. Transformer and present world The HDVC converter transformer ABB (ASEA Brown Boveri) innovation increases power transmission capacity by 50% uses at power station Ludvika, Sweden The bushing is the long component 8,000 MW at 800 kV DC over 2,000 km for the Xiangjiaba-Shanghai UHVDC link, in China. operated since 2010. Overcoming the challenge
- 14. NO Voltage NO POWER NO ELECTRICITY NETWORK FACILITY AUDIO FREQUENCY BROADCASTS POWER PROMTS SAFETY TO ELECTRIC DEVICES SURGE PROTECTOR Significance of transformer
- 16. Any Question?
- 17. “If you can read a book thank a teacher. If you can read a book at night thank an Electrician.”