Contents
Are all transformers the same?
A variety of types of electrical transformer are made for different purposes. Despite their design differences, the various types employ the same basic principle as discovered in 1831 by Michael Faraday, and share several key functional parts.
What is the difference between the two types of transformers?
Transformers generally have one of two types of cores: Core Type and Shell Type. These two types are distinguished from each other by the manner in which the primary and secondary coils are place around the steel core. Core type – With this type, the windings surround the laminated core.
Is current the same on both sides of a transformer?
No. A transformer cannot generate power out of thin air and so the power on both sides is (roughly) the same. That means if the voltage on the secondary side is higher then the secondary current is actually lower than the primary.
Does frequency change in a transformer?
It is clear that the frequency of output/induced voltage Vin is ω which is same as that of the input current. Hence, in a transformer, the frequency remains unchanged (constant) as flux changes.
Can a parallel transformer be used in a new transformer?
Parallel in a new transformer. It is sometimes more practical to parallel in a new transformer as there is minimal downtime to the operation. Three conditions must be met before you can connect transformers in parallel. 1. The transformers must have the same primary and secondary voltage ratings.
What should the secondary voltage of a transformer be?
The secondary voltage of all transformer should be equal in magnitude and phase. The voltage ratio of all transformer must be equal. i.e if the single transformer has the ratio of 11000/440 Volts means, you should connect another transformer with the voltage ratio of 11kV/440 Volts.
Can a Transformers be connected to the same supply?
The two transformers are assumed to have their primary windings connected to the same supply. Care must be taken to ensure that the transformers have compatible internal impedances or their load sharing will change over the load range and one may ‘hog’ the load causing it to overheat even though their combined load capacity has not been exceeded.
How is a converter transformer different from a power transformer?
A Converter transformer is generally used in HVDC system. We know that in a HVDC system Power Electronic circuits are used to convert AC to DC (Rectifier circuits) or convert DC to AC (Inverter Circuits). Both of these circuits are also called converter circuits.