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The working principle of the intermediate frequency induction furnace power supply What are the advantages of the intermediate frequency induction furnace power supply? -Kehua
Power is used in mechanical equipment. With the advancement of electronic technology, various power sources have also been greatly improved compared to the past. For example, the power supply of medium frequency induction furnaces is much more advanced than before. Next, Kehua will tell you about the working principle of the intermediate frequency induction furnace power supply. What are the advantages of the intermediate frequency induction furnace power supply? The intermediate frequency induction furnace power supply What is the working principle of the intermediate frequency induction furnace power supply? The rectifier circuit rectifies the alternating current into direct current, which is smoothed by the reactor to become the direct current power supply, and then goes through the single-phase inverter bridge to invert the direct current into a single-phase intermediate frequency current of a certain frequency (usually 1000 to 8000 Hz). The load is composed of an induction coil and a compensation capacitor, which are connected to form a parallel resonance circuit (can also be connected in series. In general, the IGBT power supply adopts series resonance. Of course, the IGBT power supply can also adopt parallel resonance). Under normal circumstances, the faults of the intermediate frequency power supply can be divided into two categories according to the fault phenomenon: the complete failure to start and the failure to work normally after starting. As a general principle, when a fault occurs, a comprehensive inspection of the entire system should be carried out under the condition of power failure. What are the advantages of intermediate frequency induction furnace power supply? 1. Advanced repeated start function to achieve 100% successful start-up. Adjust the system and current, close the system by voltage regulation, track the change of the load at all times, and realize the ideal soft start. This starting method has little impact on the thyristor, which is beneficial to prolong the service life of the thyristor, and it is easy to start with light and heavy loads. Advantages, especially when the steelmaking furnace is full and the freezing furnace can be easily started. 2. Cutting-edge technology, excellent energy-saving effect The control circuit adopts a microcomputer constant power processing circuit system, and an inverter Ф angle automatic adjustment circuit is installed. During the operation process, it will automatically monitor the changes of voltage, current and frequency at any time, and From this, the change of the load is judged, and the matching of the load impedance will be automatically adjusted to achieve constant power output, thereby achieving the purpose of saving time and electricity and improving the power factor. 3. The perfect design makes the circuit work reliably. Because the control circuit adopts CPLD software design, its program input is completed by the computer, which has high pulse precision, anti-interference, fast response speed, convenient debugging, and has the functions of current cutoff, cutoff voltage, overpass Current, overvoltage, undervoltage, phase loss, water shortage, and many other protection functions, because each circuit element always works within a safe range, thus greatly improving the service life of the equipment. After reading Kehua's introduction, everyone must already know the working principle of the medium frequency induction furnace power supply. The medium frequency induction furnace power supply is excellent in design and has been welcomed by various enterprises.