transformer design part 1 SINGLE PHASE CORE TYPE TRANSFORMER.

Summary

In this video, we explore the design of a single-phase core-type transformer, focusing on key parameters such as EMF per turn, main flux, current density, and copper area calculations. The transformer’s core consists of low voltage and high voltage windings, with important design factors like window space factor and core dimensions. The video outlines how to calculate the total copper area, taking into account the number of turns and the cross-sectional area of the primary and secondary windings. Viewers are encouraged to subscribe for more detailed explanations in upcoming videos.

Takeaways

• 😀 The video focuses on designing a single-phase core type transformer.
• 😀 The transformer consists of a yolk, a low-voltage winding, and a high-voltage winding.
• 😀 The distance between the cores is referred to as 'D'.
• 😀 The diagonal of the core's cross-section is labeled as 'small D'.
• 😀 Key parameters for transformer design include EMF per turn (eta), main flux (Phi M), and maximum flux density (B M).
• 😀 Current density (Delta) and areas of the core and windings (AGI, AI) are also essential for the design process.
• 😀 The total copper area is calculated by the sum of the product of winding area and turns of primary and secondary windings.
• 😀 The formula for the copper area is A_C = 8 * (P_TP + A_STS), where PT and TS are the turns for primary and secondary windings.
• 😀 The current density for both primary and secondary windings is the same, and their ampere-turns (A_T) are also considered.
• 😀 The window space factor (kW) is the ratio of the copper area to the window area and helps determine the total copper area.
• 😀 The final formula for total copper area involves the window space factor and the diameter of the circumscribing circle of the core (Delta).

Q & A

What is the purpose of the window space factor (kW) in transformer design?

The window space factor (kW) is used to determine the copper area relative to the window area in the transformer core. It helps in calculating the total copper area required for the primary and secondary windings.

What does the 'D' in the transformer design represent?

The 'D' in transformer design refers to the distance between the cores in a single-phase core-type transformer.

What does the parameter 'Phi M' represent in transformer design?

'Phi M' represents the main flux in the transformer, which is an important factor in determining the electromagnetic field strength and the transformer’s efficiency.

Why is the 'small D' diagonal important in the design of a transformer?

'Small D' refers to the diameter of the circumscribing circle of the core, and it plays a role in calculating the geometry of the transformer core and its magnetic characteristics.

What is meant by the term 'ampere turns' (AT) in transformer design?

'Ampere turns' (AT) refer to the product of the number of turns in the winding and the current flowing through it. It is used to calculate the magnetizing force in the transformer.

What is the relationship between the window space factor (kW) and the copper area (A_C)?

The relationship is given by the formula A_C = kW * A_W, where A_C is the total copper area, kW is the window space factor, and A_W is the window area of the core.

How do the primary and secondary current densities relate to each other in this design?

The current densities at both the primary and secondary sides are assumed to be the same, which simplifies the calculation of the copper area for both windings.

What role does the 'AGI' and 'AI' parameters play in transformer design?

'AGI' represents the gross area of the core, and 'AI' represents the net area of the core. These parameters are used to determine the core material's ability to handle the magnetic flux without saturation.

How do you calculate the total copper area in the transformer?

The total copper area (A_C) is calculated as the sum of the product of the primary winding's area and turns, plus the product of the secondary winding's area and turns.

What is the significance of the 'kW' factor in terms of the window area and copper area?

The 'kW' factor helps in adjusting the copper area relative to the window area. It essentially scales the copper area according to the available window area in the core.