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中频电炉逆变器的电力半导体功率器件模块智能化
[来源:www.zhongpinshebei.com] [作者:aywl] [日期:17-05-12]
中频电炉智能化是中频电源的发展趋势,也是衡量中频电炉电源 性能先进性的重要标志;同时中频电炉电源智能化也是提高加热处理自动化程度和电源可靠性的要求,使电源趋向集成化、模块化,对缩短生产周期,提高可使用性和可维修性均有重要意义。 The intelligence of medium frequency electric furnace is the development trend of medium frequency power supply, and it is also an important symbol of the advanced nature of the power supply of medium frequency electric furnace. And intermediate frequency electric furnace intelligent power supply is also increasing the degree of automation and power supply reliability requirements, make power toward integration, modularity, to shorten the production cycle, improve the reusability and maintainability are of great significance. 中频电炉电源实现智能化,应着重解决以下问题。 The power supply of medium frequency furnace is intelligent, and the following problem should be addressed emphatically. (1)选用智能半导体模块是实现智能化的基础。构成中频电炉逆变器的电力半导体功率器件模块智能化,是加热电源智能化的基础。为此应选用集驱动控制、保护、智能于一体的智能模块,这些低电感、多功能、高集成的电力半导体模块,不仅减小了体积、质量,提高了逆变器在高频工作下的效率和可靠性,而且为采用微处理接口,实现智能化控制奠定了基础。 (1) the use of intelligent semiconductor modules is the foundation of intelligentization. The power semiconductor power device module, which is composed of medium frequency electric furnace inverter, is intelligent and is the basis of the intelligent power supply. Should be chosen for this collection drive control, protection, intelligent in a body's intelligent modules, these low inductance, multi-function, high integration of power semiconductor module, not only reduces the volume and quality, improve the efficiency and reliability of the inverter under high frequency work, and for the microprocessor interface, which laid a foundation to realize intelligent control. (2)运用数字处理技术是实现智能化的核心。中频电炉电源的控制技术是否先进合理,是决定加热电源智能化程度的关键。早期中频电炉电源的控制电路采用模拟电路,难以实现智能化,而且模拟电路受温度影响和抗干扰性差,导致参数不稳定和可靠性变差。运用单片机控制,使中频电炉电源向智能化方向迈进了一大步。现在应用数字信号处理器(DSP),信息容量更大,处理能力更强、更灵活,整个控制电路可用一片DSP完成,实现自动化智能控制。 (2) using digital processing technology is the core of realizing intelligence. The control technology of medium frequency furnace power supply is advanced and reasonable, which is the key to determine the intelligent degree of heating power. Early of intermediate frequency electric furnace power supply control circuit adopts analog circuit, it is difficult to realize the intelligent, and analog circuits are influenced by temperature and poor anti-interference and deterioration in unstable parameters, and reliability. With the control of single chip microcomputer, a big step is made in the direction of the intelligent direction of medium frequency furnace power supply. Application of digital signal processor (DSP) now, information capacity is bigger, processing ability is stronger, more flexible, the control circuit can be used a piece of DSP, complete intelligent automation control. 采用以DSP为核心的控制芯片,可以使中频电炉电源实现: Using DSP as the core control chip, it can be realized by using the medium frequency electric furnace. ①PWM驱动控制信号生成; The PWM driver control signal generation; ②频率数字锁相环跟踪; Frequency digital locking ring tracking; ③功率闭环控制; Power closed-loop control; ④过电压、欠电压、缺相、过电流、过热保护; Overvoltage, undervoltage, lack of phase, overcurrent, overheat protection; ⑤故障自诊断与报警; Fault diagnosis and alarm; ⑥参数显示; In the case of an argument; ⑦远程遥控、遥测及人机界面等多种功能。中频电炉的工作状况相对复杂,运用智能控制可使中频电炉对象(工件形状、材料)、加热过程中被加热电源的功率、频率参数,使加热T件的处理性能与质量,满足规范中设置的工艺参数要求。这一切均可运用数字信号处理器芯片及计算机来完成,不仅提升了中频电炉电源的品质,而且对中频电炉生产实现自动化具有重要意义。 The various functions such as remote remote control, telemetry and man-machine interface etc. The working conditions of intermediate frequency electric furnace is relatively complex, using intelligent control can make the intermediate frequency electric furnace object (the shape, material), is heated in the process of heating power, frequency parameters of power supply, make the heating T processing performance and quality, and satisfy the requirement of the standard set in the process parameters. All can use of digital signal processor chip and computer to complete, not only improving the quality of the intermediate frequency electric stove power supply, and production automation of intermediate frequency electric furnace is of great significance.
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