| 变频器作用 |
| 添加时间：2017/8/3 17:56:05 浏览次数： |
| 1、变频节能 变频器节能主要表现在风机、水泵的应用上。为了保证生产的可靠性，各种生产机械在设计配用动力驱动时，都留有一定的富余量。当电机不能在满负荷下运行时，除达到动力驱动要求外，多余的力矩增加了有功功率的消耗，造成电能的浪费。风机、泵类等设备传统的调速方法是通过调节入口或出口的挡板、阀门开度来调节给风量和给水量，其输入功率大，且大量的能源消耗在挡板、阀门的截流过程中。当使用变频调速时，如果流量要求减小，通过降低泵或风机的转速即可满足要求。以上海正艺信息科技有限公司生产的变频器应用到风机水泵型负载的节能的例子来说：一台离心泵电机功率为55千瓦，当转速下降到原转速的4/5时，其耗电量为28.16千瓦，省电48.8％，当转速下降到原转速的l／2时，其耗电量为6.875千瓦，省电87.5％。 1. The energy efficiency of frequency conversion energy frequency converter is mainly manifested in the application of fan and water pump. In order to ensure the reliability of production, all kinds of production machinery have a certain amount of surplus in the design of power drive. When the motor cannot run at full load, except to achieve the power drive requirement, the extra torque increases the consumption of active power and causes the waste of electricity. Fan and pump equipment such as the traditional speed regulation method is by adjusting the barrier of entry or exit, the valve opening to adjust to the air and water, the input power is big, and large amounts of energy consumption on baffle and valve closure process. When using frequency conversion speed regulation, if the flow requirement is reduced, the speed of the pump or fan can be reduced to meet the requirements. In Shanghai are art information technology co., LTD. The production of energy-saving inverter is applied to the fan pump type load, for example: a centrifugal pump motor power is 55 kw, when the rotation speed decreased to 4/5 of the original speed, its power consumption is 28.16 kw, save electricity by 48.8%, when the rotational speed down to the original of l / 2, its power consumption is 6.875 kw, save electricity by 87.5%. 2、功率因数补偿节能 无功功率不但增加线损和设备的发热，更主要的是功率因数的降低导致电网有功功率的降低，大量的无功电能消耗在线路当中，设备使用效率低下，浪费严重，使用变频调速装置后，由于变频器内部滤波电容的作用，从而减少了无功损耗，增加了电网的有功功率。 2 energy-saving reactive power, power factor compensation not only increase the line loss and equipment of fever, more important is the lower power factor resulting in a loss of active power grid, a large number of reactive power consumption, in the middle of the line equipment use low efficiency, waste is serious, using variable frequency speed regulating device, the effect of frequency converter due to the internal filter capacitor, thus reducing reactive power loss, increase the active power of power grid. |
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