How reduce the copper and iron losses of transformer?

1. Choosing a lower current density and reducing the number of turns will increase the magnetic flux density of the iron core and increase iron loss. When copper loss is significantly higher than iron loss, use with caution. Change the function of the transformer tester to lower the AC resistance of the winding. The method is to reduce the diameter of the copper wire (without reducing the total cross-sectional area), increase the primary adjacent surface (which will increase the primary distributed capacitance), and reduce the primary spacing (which will increase the primary distributed capacitance). Primary distributed capacitance, and loosen the coil.

2. Changing the operating parameters of the circuit to lower the AC resistance, such as lowering the switching frequency, will increase the magnetic flux density of the iron core. Use wires with lower electrical resistivity. The transformer tester uses magnetic core data with better power consumption parameters, such as TDK's PC50 data instead of PC40 data. The transformer tester reduces magnetic flux density but increases the number of coil turns, resulting in increased copper loss. Use with caution.

3. Modify the circuit parameters of the transformer tester, such as lowering the switching frequency but increasing the magnetic flux density together. Use with caution and adjust the number of winding turns if necessary. Reasonable thermal planning, using valley values in the core material temperature and loss curve. Reasonably allocate the copper loss and iron loss ratio based on their respective heat dissipation conditions. Reasonably plan the magnetic flux density and operating frequency of the magnetic core, so that the magnetic core operates in a better FB combination state.

The transformer tester accurately measures the true effective value of parameters such as voltage, current, power, and power factor of three-phase electrical equipment, and has the characteristics of fast measurement speed, high accuracy, convenient use, lightweight and beautiful appearance. Specially used for detecting the electricity level of power transformers, this appearance can replace the nine same level pointer appearances, and is an ambitious replacement product for traditional electricity level testing appearances.

The characteristics of the transformer tester include the function of direct resistance to ratio testing, as well as the function of direct resistance testing and ratio group testing. It can complete two types of tests in one connection, which is simple and convenient. It has a three-phase sine inverter power supply output, with automatic adjustment of output voltage, and soft start and soft stop functions, so the testing speed is fast and the accuracy is high. Three phase transformer, single-phase transformer, transformer ratio, group, polarity testing function. It has blind testing function, which means conducting ratio and group testing when the high and low voltage connection methods are not known.

Weshine Electric Manufacturing Co., Ltd.