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Folks, We have a need to measure the corrosion rate of steel h-piles (A572) installed in corrosive soils. The h-piles support a stuctural wall. Other than excavating a few h-piles and taking physical measurements of the h-piles over time, and monitoring using resistance coupons, is the linear...

Ok, I am back online. The existing synchronous motor does not have a permanent magnet rotor. We will consider replacing this motor with a permanent magnet rotor so we can use regenerative braking when lowering the gate during times when normal power is out. Again, thanks for all your comments.

The load bank absorbs the energy when then gate is being lowered during normal operation. Thanks,

I have a vertical gate that is raised by a synchronous motor via a gear box. Once the vertical gate is fully open a brake is engaged to hold the gate in the open position. To lower the gate the brake is released and a resistor load bank is used to absorb the reverse emf that is generated when...