Induction heating power supply and its technical (part 2)

Induction heating power supply and its technical (part 2)

From the circuit point of view induction heating power supply of large capacity, high-capacity technology can be divided into two categories: one category is the device series and parallel; the other is multi-bridge power supply or more series and parallel. In the device and parallel manner, we must seriously address the issue of serial devices and parallel devices are pressure mean flow problem, due to the device manufacturing process and discrete parameters, limiting the device's string, the number of parallel and series and parallel the number of The more the worse the reliability. More than one power supply and parallel technology is in the device and parallel technology to make further capacity on the basis of an effective means by means of a reliable power supply and parallel technologies, stand-alone capacity of appropriate cases, simply by series and parallel operation mode to be high-capacity devices, each device is a stand-alone unit (or a module).

Induction Heating Power Inverter main shunt inverter and series inverter, series inverter can be equivalent to a low-impedance voltage source, when the two voltage sources in parallel with each other between the amplitude, phase and frequency fluctuations will result in different or large circulation, as well as inverter device's current serious imbalance, therefore, the existence and machine inverter series expansion difficult; while the parallel power inverter, inverter DC input large reactor could serve as the parallel inverter link between the current buffer, allowing input AG / DG or DG / DG links have enough time to correct the DC bias current to achieve multi-machine parallel expansion, transistor-based ultra-audio, high-frequency current Multi-inverter with parallel structures, parallel inverter easy modular, high capacity is one of the main reasons.

Induction heating power supply wide range of load objects, while the power inverter and the load is an organic whole, and generally use a matching transformer to connect the power and load sensors, high-frequency, VHF power supply to the matching transformer windings from the magnetic material structure is further optimized and improved at the same time, from the circuit topology can be replaced by two with three passive components, passive components, to cancel the transformer to achieve high efficiency, low-cost match.

Induction heating power supplies, thyristor, transistor and tube-type in the country can produce. Thyristor Power has produced for many years. Present IGBT power because of their advantages over the more users adopt. MOSFET power supply, high efficiency, low voltage, but higher prices are gradually replacing the vacuum tube high frequency power supply. Portable mini-high-frequency power supply due to cheap, convenient and widely used in China, and even access to foreign markets.

Ultra-high frequency power (27.12MHz), used to rely on imports, and now there are at least two companies have domestic production to solve the blades, saws and other special technology needs.

Induction Heat Treatment Production Line Automation with the degree of control and power the high reliability requirements increase, we must strengthen the heating process complete device development. At the same time intelligent control of induction heating system, the forward direction, with a computer, intelligent interface, remote control and automatic fault diagnosis and other control performance of induction heating power supply system is becoming the next generation of development goals.

To learn more about power inverter, please visite http://www.szpowerinverter.com/ and http://www.bestekltd.com/, or mail to sale38@0102.cn .