变频器带电机运行省电吗?考虑变频器耗电,就比方说电机工频运行和带变频器50HZ运行

2025-01-06 15:16:39
推荐回答(5个)
回答1:

不能节省电。变频器也是耗电设备,变频器里面有好多的控制电路,这些电路也需要工作电源来维持才能保证变频器正常运行。利用变频器来带电机,这样是因为变频器的启动方式可以减小电机启动时对电网的冲击,因为变频器V/F启动或者V/F分离启动都可以减小电机启动的冲击电流,你应该清楚,电机直接启动时启动电流很大,大概为额定电流的5至7倍,而增加变频器却可以很好起到缓冲作用,减小对电网的冲击。
另外,同样是电源,一者直接加在电机上,另一者通过变频器后在加到电机上,在输入电源功率一样的前提下,直接加在电机上的电源效率更高,而通过变频器后在加到电机上的电源效率低,那是因为变频器本身也要消耗功率。至于为什么要加变频器,前面也说了,另外,变频器本身有很好的保护功能,在调速和控制方面很容易实现。

回答2:

变频器不是省电器,除了少数风机场合会有一点效果外,其他场合都是耗电的

回答3:

如果用变频器运行在50HZ的情况下,肯定不能省电,只能更加费电,用变频器一般有两个目的,一个是节能,主要应用在风机水泵等设备上,因为这类设备的功率与转速的平方成正比,转速越低,节能越多,另一种主要是控制设备的便利性,因为变频器调节频率方便,转速易于控制,系统简单,不象以前用直流系统那么复杂,且可靠性高;

回答4:

关于变频器节电方面的问题太多啦!
简单说吧!变频器本身不是节电器性质的产品,不是什么负载一用上变频器都能节电的。准确的说变频器是个可以节电的工具,至于能不能节电和能节省多少是看你怎么使用这个工具呢。同样的变频器在不同场合和条件下,节电差距很大的哦!
还有一点要特别说明一下,变频器的使用场合大多数为工业场合,在这些场合节电是有前提的,那就是在满足工艺负载要求的前提下的节能才是有意义的。就和电灯一个道理的,你不开灯是最节能的,但是不开灯达不到照明的效果的。所以是在开灯并且满足照明条件下的节能才是有意义的节能的哦!

回答5:

一般吧

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