Temperature controllable transformer loss measuring system

Abstract

The invention discloses a temperature controllable transformer loss measuring system. The system comprises a heating bench, a signal generator, an oscilloscope, a processor, a temperature sensor and a sampling resistor, a transformer to be measured is placed on the heating bench, the anode output end of the signal generator is connected with the anode end of a primary coil of the transformer to be measured, the cathode end of the primary coil of the transformer to be measured is connected with a sampling resistor and the anode end of a first channel of the oscilloscope, the other end of the sampling resistor is grounded and connected to the cathode end of the first channel of the oscilloscope, the anode and cathode ends of a secondary coil of the transformer to the measured are connected with the anode and cathode ends of a second channel of the oscilloscope, the cathode output end of the signal generator, the other end of the sampling resistor and the cathode end of the secondary coil of the transformer to be measured are connected successively, the heating bench, the signal generator, the oscilloscope and the temperature sensor are connected with the processor, and the temperature sensor measures the temperature of the transformer to be measured. According to the invention, the transformer loss can be measured in different temperature environments, and the system is rapid, simple and accurate, and is low in the instrument cost.

Description

Technical field [0001] The invention relates to the technical field of magnetic element measurement, in particular to a temperature-controllable transformer loss measurement system. Background technique [0002] With the continuous advancement of science and technology, switching power supply as the core component of electronic equipment has also undergone several cycles of development. Magnetic components are the key components of switching power supplies, and their volume and weight generally account for 20-30%. Magnetic components can be divided into inductors and transformers. The inductors mainly play a filtering role, and the transformers mainly play a role in voltage conversion and electrical isolation. The damage of the magnetic components directly affects the reliability of the switching power supply. Loss is the direct factor that causes damage to magnetic components. Different working environments will produce different losses. [0003] In the prior art, measurement ...

AI Technical Summary

Problems solved by technology

However, there are some deficiencies in the prior art: the influence of temperature environment changes on the loss of switching power supply transformers is not considered.

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