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Electrical Engineering/Hybrid Electric Water Pumps.


QUESTION: Dear Prof Cleggsan

Are there Hybrid Electric water pumps which operate on both AC and DC power?.

For this one may require both AC motor and DC motor integrated in the Electric water pump?.


ANSWER: Not that I know of. At least not in the mainstream electrical products area.

I did find, however, discussion of a solar powered water pump that operates from either AC or DC.

Quoting from the above link it says:

"Voltage of the solar pump motors can be AC (alternating current) or DC (direct current). Direct current motors are used for small to medium applications up to about 3 kW rating, and are suitable for applications such as garden fountains, landscaping, drinking water for livestock, or small irrigation projects. Since DC systems tend to have overall higher efficiency levels than AC pumps of a similar size, the costs are reduced as smaller solar panels can be used.

Finally, if an alternating current solar pump is used, an inverter is necessary that changes the direct current from the solar panels into alternating current for the pump. The supported power range of inverters extends from 0.15 to 55 kW and can be used for larger irrigation systems. However, the panel and inverters must be sized accordingly to accommodate the inrush characteristic of an AC motor."

Hope this helps.

---------- FOLLOW-UP ----------

QUESTION: Dear Prof Cleggsan


Will it be technically feasible to design such a Hybrid Electric water pump which accepts both AC and DC power input for operations ?.


There is no technical problem.  Rather, the solution is whether or not a market exists for such a product.  And even if there is, the solution is merely to drive the current water pump with a voltage inverter or build in two motors; one ac the other dc.  

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BSEE (Equiv) BYU BSEE University of North Dakota MSBA (MBA) Illinois State University Graduate Studies in Computer Science - Bradley University Graduate Studies - Ohio University Graduate Studies - University of Missouri Kansas City DeVry Tech - Electronics

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