ACS800 01 0003 3频率转换器ABB变频器 PLC模块卡件 伺服控制器

ACS800 01 0003 3频率转换器ABB变频器 PLC模块卡件 伺服控制器

ACS800 01 0003 3频率转换器ABB变频器 PLC模块卡件 伺服控制器

在冶金、化工、电力、市政供水和采矿等行业广泛应用的泵类负载，占整个用电设备能耗的40%左右，电费在自来水厂甚至占制水成本的50%。这是因为:一方面，设备在设计时，通常都留有一定的余量;

另一方面，由于工况的变化，需要泵机输出不同的流量。随着市场经济的发展和自动化，智能化程度的提高，采用高压变频器对泵类负载进行速度控制，不但对改进工艺、提高产品质量有好处，又是节能和设备经济运行的要求，是可持续发展的必然趋势。

对泵类负载进行调速控制的好处甚多。从应用实例看，大多已取得了较好的效果(有的节能高达30%-40%)，大幅度降低了自来水厂的制水成本，提高了自动化程度，且有利于泵机和管网的降压运行，减少了渗漏、爆管，可延长设备使用寿命高压变频器的种类繁多，其分类方法也多种多样。

按着中间环节有无直流部分，可分为交交变频器和交直交变频器;按着直流部分的性质，可分为电流型和电压型变频器;按着有无中间低压回路，可分为高高变频器和高低高变频器;按着输出电平数，可分为两电平、三电平、五电平及多电平变频器;按着电压等级和用途，可分为通用变频器和高压变频器;按着嵌位方式，可分为二极管嵌位型和电容嵌位型变频器等等

ACS800 01 0003 3频率转换器ABB变频器 PLC模块卡件 伺服控制器

Pump loads, which are widely used in industries such as metallurgy, chemical industry, electric power, municipal water supply and mining, account for about 40% of the energy consumption of the entire electrical equipment, and the electricity bill even accounts for 50% of the cost of water production in waterworks. This is because: on the one hand, the equipment is usually designed with a certain margin;

On the other hand, due to the change of working conditions, the pump needs to output different flow rates. With the development of market economy and automation, the improvement of the degree of intelligence, the use of high voltage frequency converter for speed control of pump load, not only to improve the process, improve product quality is good, but also the requirements of energy saving and equipment economic operation, is an inevitable trend of sustainable development.

There are many advantages to speed control of pump loads. From the application examples, most of them have achieved good results (some energy saving up to 30%-40%), greatly reducing the cost of water production in the waterworks, improving the degree of automation, and is beneficial to the step-down operation of the pump and pipe network, reducing leakage, pipe explosion, and extending the service life of the equipment.

According to the middle link has no DC part, it can be divided into AC-AC inverter and AC-DC inverter; According to the nature of the DC part, it can be divided into current type and voltage type inverter; According to whether there is an intermediate low-voltage circuit, it can be divided into high frequency converter and high and low frequency converter; According to the number of output levels, it can be divided into two levels, three levels, five levels and multilevel inverter; According to the voltage level and use, it can be divided into general frequency converter and high voltage frequency converter; According to the embedding mode, it can be divided into diode embedding type and capacitor embedding type inverter and so on