BTS7960W Becomes A Power Point PV Water Heater For Arrays Under 40V, Direct Power, part 2

First test of this concept of using a BTS7960 H bridge motor driver to become a high efficiency power point water heater. This is suitable for camps with 24V or 30V array. Maximum open circuit array voltage is 40V with a small safety margin.
This test is with a 9 ohm 2,000W 120V heater element. Power supply is set to 22V with a 3 ohm resistor in series to simulate a panel. Capacitance of bank is 6,000uf. Zener voltage is 5.1V to power the HC244 chip on the module. 0.22uF is on the enable input as a noise filter. Diode and 4.7K resistor ensure enable input does not get above 4V. The rest is just a voltage divider depending on array. Min/max swings can be reduced by inserting zener where some of the voltage divider resistors are.

[@opera5714]

First test of this concept of using a BTS7960 H bridge motor driver to become a high efficiency power point water heater. This is suitable for camps with 24V or 30V array. Maximum open circuit array voltage is 40V with a small safety margin.
This test is with a 9 ohm 2,000W 120V heater element. Power supply is set to 22V with a 3 ohm resistor in series to simulate a panel. Capacitance of bank is 6,000uf. Zener voltage is 5.1V to power the HC244 chip on the module. 0.22uF is on the enable input as a noise filter. Diode and 4.7K resistor ensure enable input does not get above 4V. The rest is just a voltage divider depending on array. Min/max swings can be reduced by inserting zener where some of the voltage divider resistors are.