We met this week to work with and understand the solar panel systems provided to us by the BRAE department on campus. We tested volt readings and amp readings. Our goal with prototyping is to discover if it is possible to run a pump using direct photovoltaic power (no controller) under variable load conditions. We decided to meet at another time earlier in the day to do further testing.
Our procedure for this next step is as follows: 1. Wait for a sunny day. 2. Hook PV panels in parallel to the operating amperage of the pump (if necessary). 3. Hook up electrical system to a data acquisition system to measure voltage (V) and amperage (A) in the circuit. 4. Run the pump with suction and return to the same bucket and minimal loading conditions. 5. If pump runs smoothly, add hydraulic resistance by throttling down the return valve. The graphic below (on the right) shows how we will do this testing.
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