I need to test a variable-speed generator attached to a small wind turbine (lets say). I want to see how much power its producing, as well as the current. It outputs in three-phase Y configuration at frequencies varying from 3 to 9 Hz. The generator is rated at 1.2 kW at 550RPM, with an open circuit rectified DC voltage of 380 V. I have zero experience working with high-power motors and generators and how to test them. I think the best bet would be to use a purely resistive load, correct? I'd have to use some robust resistors - my thinking was to setup a "bank" of resistors in parallel to meet the power requirement and then connect one bank to each phase. I could then measure voltage, and knowing the resistance of the bank determine power for each phase, right? Would the load resistance matter in determining output power? Does the load effect how hard the generator is to turn, etc?