His grid tie inverter is for wind turbine power generation. The inverter input is 3 phase AC, not DC. The inverter output is for 220V single phase grid OR 380V 50Hz/60Hz Three phase grid. System Composition The system mainly includes: wind turbine, lightning protector 1 in wind turbine side, electromagnetic brake system, AC filter in wind turbine side, rectifier boost voltage, dump load circuit, inverting bridge, AC filter in inverter side, common mode filter, AC breakers, lightning protector 2 in grid side, and single-phase 230V grid. Hardware Function Introduction Lightning protector: the lightning protection device at the input and output side of the machine. Electromagnetic brake: the machine can start electromagnetic brake to brake the wind turbine when rotational speed is over, inverter output power is over, the temperature is over. AC filter: The ripple and DC components in AC voltage are filtered out, and the AC voltage is transformed into a smooth, harmonic waveform which satisfying the requirements. Rectifier boost circuit: Transform and boost the three-phase AC voltage generated by wind turbine to required DC voltage. Dump load circuit: Redundant power is released by dump load by PWM control. Inverting bridge: transform DC to AC Common mode filter: suppress EMI interference in the circuit. AC breakers: Cut off the connection between grid and inverting bridge during inverter fault or standby to avoid rectification flow backward. Features Wind power Controller&Inverter integrated machine Support wide range voltage input MPPT included, and track point settable Complete protection functions. Keep pressing the button for 5s to unload completely. And then recover by pressing it for another 5s. Switch “ON” the brake switch. Brake by over wind speed. It dumps load completely when reached the set wind speed, and recover automatically after working 10mins and wind speed is less than 15m/s. Brake by over rotational Speed. Unload completely when reached the set rotational speed, and recover automatically after 10mins. AC output over frequency. AC short circuit protection. Dump load, grid state, wind generator state, faults. Wind rotate speed, wind power, AC output voltage /current/power, and fault code. Note: Part of parameters can be adjusted according to customer. Please connect those parts according to the order of. And notice the following items. Connect two output lines of dump load to the unload terminals “R” “R” of the machine. “N” and earth wire. On the machine relatively. When wind turbine is still or running in a low speed, connects its output line to the “WIND INPUT” terminal on the. Connect communication device to the relative communication port. If there is a communication device. Check all the connection to make sure they are connected rightly and tightly. Please measure the voltage and frequency of the grid before connect the system to the grid. Cannot be connected to the earth wire terminal, or the machine will be damaged permanently. The switch should be at “BRAKE” status while installation, and changed to “RUN” status when it works. Grid is not normally connected. Grid voltage or frequency is abnormal. Check the details from the monitoring software. Inverting circuit soft over current protection. Check the wiring connection on the AC side circuit after ensuring the machine is disconnected with any power supply. Please connect Win Power. Once the inverting module temperature recovers to normal, the machine will clear the fault itself. IPM protection for the inverting side. Wait for 5mins, test after the fault is recovered automatically. If not, please contact Win Power. Rectifying circuit soft over current protection. IPM protection for rectifying side. Wind voltage is higher than bus voltage fault protection point.
