Principle offrequency conversion series resonance complete set device? Wuhan UHV specializes in the production ofseries resonance, with a wide range of product selection and professional electrical testing. To findseries resonance, choose Wuhan UHV. 

The principle of thevariable frequency series resonance complete set deviceis to use the principle of series resonance. By adjusting the output frequency of the variable frequency controller, the reactor inductance L and the sample capacitance C in the circuit undergo series resonance, and the resonance voltage is the voltage applied to the sample. The frequency conversion resonance test device is widely used in industries such as power, metallurgy, petroleum, and chemical engineering. It is suitable for the handover test and preventive test of high-capacity and high-voltage capacitive specimens, such as generators, power transformers, GIS and high cross-linking power cables, transformers, bushings, etc. 

The complete set ofvariable frequency series resonance equipmentmainly consists of a variable frequency controller, excitation transformer, high-voltage reactor, high-voltage voltage divider, etc. Variable frequency controllers are divided into two categories: desktop controllers with 20KW and above, and portable box controllers with 20KW and below; The complete set of variable frequency series resonance equipment consists of a controller and a filter. The main function of a variable frequency controller is to convert a 380V or 200V AC power frequency sine wave with fixed amplitude and frequency into a sine wave with adjustable amplitude and frequency. And provide power for the entire equipment. The function of the excitation transformer is to raise the voltage output by the variable frequency power supply to the appropriate test voltage. The high-voltage reactor L is an important component of the resonant circuit. When the power frequency is equal to 1/(2 π√ LCX), it undergoes series resonance with the test sample CX.

Working principle of frequency conversion series resonance complete set device

The power supply is provided through a variable frequency controller, and the test voltage is initially boosted by the excitation transformer to apply high voltage to the reactor L and the test sample Cx. By changing the output frequency of the variable frequency controller, the circuit is in series resonance state, and the output voltage of the variable frequency controller is adjusted to achieve the required voltage value on the high voltage of the test sample. 

The resonant frequency of the circuit depends on the capacitance Cx of the test sample and the inductance L of the reactor, with a resonant frequency of f=1/(2 π√ LC). 

Characteristics of the complete set of variable frequency series resonance equipment:

1. The large screen displays test data and test status, and has real-time operation step prompts.

2. Can flexibly adjust the test voltage, frequency range, and pressurization time. 

3. The experimental results can calculate the capacitance of the test sample. 

4. Small size, light weight, and easy operation. 

5. High resolution, frequency resolution of 0.001Hz, voltage resolution: coarse adjustment of 1%, fine adjustment of 0.01%. 

6. High safety and reliability, the system has overvoltage, overcurrent, and discharge protection functions, which can protect personal and equipment safety. 

7. The test results can be printed. 

8. Upgradeable operating software.