Friday, February 2nd, 2024

Transformer Heat Sink: A Key Component for Optimizing Power Equipment Performance

In power equipment, the transformer is the core component, which converts the input AC voltage into the voltage required by the user. However, the transformer generates heat during the process of converting energy. If it cannot be dissipated effectively, it will cause the equipment to overheat or even be damaged. Therefore, transformer heat sinks become a crucial component in optimizing the performance of electrical equipment. This article will delve into transformer heat sinks’ design, application and optimization.

(Transformer heat sink)

Basic principles of transformer radiator

The working principle of the transformer radiator is based on heat conduction and heat convection. It mainly consists of a radiator, fan and thermal conductive material. When the transformer generates heat, this heat is transferred to the heat sink through the thermally conductive material, and the heat is then dissipated to the environment through the airflow generated by the fan.

Design elements of transformer radiator

  1. Radiator material: Radiator materials commonly include aluminum, copper and stainless steel. Choosing a suitable material is crucial to improving the thermal conductivity of your radiator.
  2. Radiator structure: The structure of the radiator should maximize the heat dissipation area, and at the same time, it should be easy to install and maintain. Common radiator structures include fin-shaped, columnar and plate-shaped.
  3. Fan selection: The fan is the core component of the transformer radiator, and its selection directly affects the heat dissipation effect. The appropriate fan needs to be selected based on the power of the transformer, cooling requirements, and environmental conditions.
  4. Thermal conductive materials: The selection of thermally conductive materials is crucial to ensure that heat is conducted from the transformer to the heat sink. Materials such as silicone grease and thermally conductive silicone have excellent thermal conductivity and can effectively transfer the heat generated by the transformer to the radiator.
(Transformer heat sink)

Application and optimization of transformer radiators

  1. Power equipment field: Transformer radiators, such as power transformers, reactors, etc., are widely used in the power equipment field. Proper design and installation of transformer radiators can ensure the power equipment’s stable operation and improve the power supply quality.
  2. New energy vehicle field: With the popularity of new energy vehicles, the power of onboard chargers is increasing daily, and the demand for heat dissipation is also higher. Against this background, car charger manufacturers have adopted efficient transformer radiators to ensure the stability and reliability of the charger.
  3. Optimization measures: To further improve the performance of the transformer radiator, the following optimization measures can be taken: a) Use heat pipe technology and use the phase change principle of liquid to enhance heat transfer; b) Conduct fluid mechanics analysis of the radiator to optimize the airflow channel; c) Use advanced thermal simulation software for design and optimization to improve the thermal efficiency of the radiator.


PDDN Photoelectron Technology Co., Ltd. is a high-tech enterprise focusing on the manufacturing, R&D and sales of power semiconductor devices. Since its establishment, the company has been committed to providing high-quality, high-performance semiconductor products to customers worldwide to meet the needs of the evolving power electronics industry.

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