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The HF DC power supply is of high efficiency and reliability, which is specially developed for the Kyropoulos sapphire furnace and it, is with merits of high power factor, low harmonic current and high efficiency.
Combining with the control concept of current international mainstream, the heating power supply adopts the digital design to make the machine run more efficiently.
The heating power supply adopts the N + 1 redundancy technology to ensure the entire sapphire production cycle. We adopt DSP digital control mode, making the output voltage accuracy to five over ten thousand, and it has analog peripheral interface, 485 communication interface, etc. Using IGBT as power device to improve working efficiency and conform to the current trend of saving energy and reducing consumption.
1. Control system: We adopt American TI company DSP processor, which is of high control accuracy and high reliability. It employs PI control technology with advanced hardware and software. If there occurs fluctuation in power grid voltage, it can automatically maintain the current output power constantly.
2. HMI: It displays parameters in real time such as output voltage, current and power, etc.. It works with function of data maintained when power fails and it is easy to inquire and maintain the record of failure time and fault type.
3. High efficiency and low pollution: We adopt the phase shifting full bridge soft switching (ZVS) control technology, to realize the IGBT open and shut off under zero voltage. It greatly reduce the IGBT switching loss, the noise pollution and electromagnetic interference of the power. The output voltage waveform is completely smooth, and it runs more safe and stable.
4. High reliability: We adopt the multi-unit structure of N + 1, and the multiple units work together in normal condition. Failure of one unit does not affect the present output power and it is more convenient to maintain normal operation of equipment.
5. Perfect protection: Overtemperature protection and output over-voltage or over-current protection, output short circuit and grounding protection, the limit protection of water flow and strike fire protection, etc.
6. Flexible interface: Input and output support simulation approaches such as switch, voltage and current signal, Modbus, MB + and Profibus etc. data communications control.
Main Technical Parameters
|AC Input||Input voltage||380V ±10%|
|DC Output||Output Voltage||0~18V|
|Stable-voltage precision||<0.5%o< span="">|
|Main characteristics||Work mode||CV Cl CP|
|Voltage distortion rate||≤5%|
|Current distortion rate||≤12%|
|Type of cooling||Water cooling|
|Protection||Input phase-deficient||Input A、B、C three- phase, lose phase cause stop|
|Output overvoltage、over current||Over threshold cause stop|
|flow rate protection||Delayed-stop if water flow is less than setting value|
|Working environment||Water flow rate||≥35L/Min|
|Pressure between inlet and outlet||0.08~0.6Mpa|
|Ambient humidity||0 〜85% No condensation|
|Dimension||(WxHxD) Size||800 x 2200 x 1750 mm|
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