1756-PA75-B 金属框架和支撑系统

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1756-PA75-B 金属框架和支撑系统

1756-PA75B金属框架和支撑系统
通过调节电源电压就能够满足动态过程中转速调节的要求。二是基于损耗模型的矢量节能优化控制，与标量控制相比，矢量控制算法比较复杂，且对感应电机的软硬件控制要求也比较高，随着电机控制系统的软硬件性能以及参数辨识技术的不断提高，通过对铁耗时矢量节能控制系统的优化来实现电机节能运行的控制，满足高动态性能的调速场合，如数控机床、电动机车等。由于感应电机在动态制动过程中会受到变频器大电压和电流的限制，可以通过转速调节器的限幅控制来实现，可以设计如下控制方案：将矢量控制与节能控制有机结合在一起，通过磁链优化控制来实现感应电机的节能控制，采用节能优化后的磁链进行矢量控制，其效率会有一定的提升，特别是对转速接近于额定转速以及低负载转矩的运行工况效率的提高。

腐蚀性气体→主要是铜排、各器件的管脚会腐蚀如果现场的海拔标准高度超过1000m，变频器运行有什么注意事项？现场的海拔标高过1000m时，请把负载率减少（因冷却效果降低）。标准2000m：把负载电流下降到90％。3000m：把负载电流下降80％如果在安装场所有振动，如何解决？基本上变频器不允许振动，即使开始的时候没问题，时间长了也会出现故障。如果没有无振动的安装场所，请采用防振胶垫。注意：一般规格表上的”振动”表示”运输过程中的振动”并不是”使用时的振动”。变频器的过电流保护及处理方法？A、过电流保护功能：变频器中,过电流保护的对象主要指带有突变性质的、电流的峰值超过了变频器的容许值的情形。

1756-PA75-B 金属框架和支撑系统

1756-PA75B Metal frame and support system
By adjusting the power supply voltage, the requirements of speed regulation in the dynamic process can be met. Second, vector energy-saving optimization control based on loss model. Compared with scalar control, vector control algorithm is more complex and has higher requirements for induction motor hardware and software control. With the continuous improvement of hardware and software performance and parameter identification technology of motor control system, the control of motor energy-saving operation can be realized by optimizing the iron time consuming vector energy-saving control system. Meet the high dynamic performance of speed control occasions, such as CNC machine tools, electric locomotives, etc. Since the induction motor is limited by the high voltage and current of the inverter during dynamic braking, it can be realized by the limiting control of the speed regulator. The following control scheme can be designed: The vector control and energy saving control are organically combined, and the energy saving control of induction motor is realized through flux optimization control. The efficiency of vector control using the flux optimized after energy saving will be improved to a certain extent, especially for the operation condition with the speed close to the rated speed and low load torque.

Corrosive gas → Mainly copper bars, the pins of each device will corrode If the standard altitude of the site exceeds 1000m, what are the precautions for the operation of the inverter? When the elevation of the site exceeds 1000m, please reduce the load rate (due to the reduction of cooling effect). Standard 2000m: Reduce the load current to 90%. 3000m: Reduce the load current by 80% if there is vibration in the installation site, how to solve it? Basically, the frequency converter does not allow vibration, even if there is no problem at the beginning, there will be a failure for a long time. If there is no vibration-free installation site, use vibration-proof rubber pads. Note: The “vibration” on the general specification sheet means “vibration during transportation” and not “vibration during use”. Inverter overcurrent protection and treatment method? A. Overcurrent protection function: In the frequency converter, the object of overcurrent protection mainly refers to the situation with mutability and the peak value of current exceeds the allowable value of the frequency converter.