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| 摘要: |
| 首先以2台变频水泵为例，介绍了常用的控制方法。然后分析了水泵频率与功率的关系，介绍了1台水泵单独运行和2台水泵并联运行的功率系统、流量关系、等功率和等流量曲线。得出结论：在等功率和等流量曲线的交点上方2台水泵同时工作比较节能。而在交点下方应只使用1台水泵。改进了多台水泵的控制方式。即根据系统用水量改变水泵频率从而控制水泵的运行情况。工程实例证明了其有效性。 |
| 关键词: 变频调速 并联水泵 节能控制 |
| DOI： |
| 分类号:TP273 TU821.5 |
| 基金项目: |
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| Control scheme for parallel variable-frequency speed-governing pumps |
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U Wen CHEN Hong-liang
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| Abstract: |
| The common control scheme for two variable-frequency pumps are introduced as an example. The relationship between frequency and power is analyzed. The relationships between sole pump operation and dual parallel pump operation in power,flow,equipower curve and equiflow curve are described. It is concluded that above the intersection of equipower and equiflow curves,dual pump operation is more economical,while below it,sole pump operation is suitable. The control scheme for multi pump operation is thus improved,which changes pump frequency and controls pump operation according to water consumption. The practical project verifies its effectiveness. |
| Key words: variable frequency,parallel pumps,energy saving control |
