Temperature Controlled Transformer Loss Measurement System
A technology of transformer loss and measurement system, which is applied in measurement devices, measurement of electrical variables, dielectric performance measurement, etc., can solve the problem of not considering the influence of switching power supply transformer loss, etc., and achieve the effect of low instrument cost
Active Publication Date: 2018-11-13
FIFTH ELECTRONICS RES INST OF MINIST OF IND & INFORMATION TECH
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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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[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0013] A temperature-controllable transformer loss measurement system in an embodiment includes: a heating table, a signal generator, an oscilloscope, a processor, a temperature sensor, and a sampling resistor;
[0014] The transformer to be tested is placed on the heating platform, the positive output terminal of the signal generator is connected to the positive terminal of the primary coil of the transformer to be tested, and the negative terminal of the primary coil of the transformer to be tested is respectively connected to the sampling resistor and the positive ter...
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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 progress of science and technology, switching power supply, as the core component of electronic equipment, has also gone through several cycles of development. Magnetic components are the key components of switching power supplies, and their volume and weight generally account for 20 to 30 percent. Magnetic components can be divided into inductors and transformers. Inductors mainly play the role of filtering, and transformers mainly play the role of voltage conversion and electrical isolation. Damage to magnetic components directly affects the reliability of switching power supplies. Loss is the direct cause of damage to magnetic components. Different working environments will produce different losses. [0003] In the prior art, methods for me...
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IPC IPC(8): G01R27/26
CPCG01R27/2694
Inventor 方文啸孙迪何小琦陈义强刘远黄云恩云飞
Owner FIFTH ELECTRONICS RES INST OF MINIST OF IND & INFORMATION TECH