Introduction
Transformer efficiency refers to the ratio of the output power of the transformer to the input power, that is, the energy conversion efficiency of the transformer. It can usually be divided into two types: theoretical efficiency and practical efficiency.
Theoretical Efficiency
Theoretical efficiency, also known as 100% efficiency, refers to the ratio of transformer output power to input power without loss, which can be calculated by the following formula:
Theoretical efficiency = output power ÷ input power × 100%
where the output power and input power are the product of the output voltage and current of the transformer and the input voltage and current, respectively.
Actual Efficiency
Actual efficiency refers to the efficiency of the transformer after taking into account the power loss in actual work. There are many different types of power losses in transformers, including iron loss, copper loss, etc., so the formula for calculating the actual efficiency is more complex, and can usually be calculated by the following formula:
Actual efficiency = output power ÷ (input power + total loss) × 100%
The total loss is the electrical energy loss of the transformer during operation, which can be obtained through experiments or data provided by the manufacturer.
