Bi-directional inverter can not only convert the DC power into AC power,but also can invert the AC power to DC power.Bi- directional inverter mainly control the battery’s charging and discharging,at same time it is the core control equipment.Bi-directional inverter can apply in the grid ties power system which has the requirement of power storage function.The power storage system is for the the emerging load or important load charging.It can combine with the string inverter and then construct the separated PV power system.
Bi-directional inverter charged by batteries ,convert the DC power into AC power.Constructing the grid at the basis of the AC general line.String grid inverter can automatically test the solar battery array with enough power or not.Testing the grid whether meet the need of grid power.When meeting the need can go into the grid power mode,feeding power to the AC general line.,then the work of starting the system was completed.When normally operating .Bi-grid inverter will test the power using of the load .The power feeding to the grid from string grid inverter firstly for the load charging.If there is rest power ,BI-grid inverter will convert it into DC power and charge the battery.If the power feeding to the grid is not enough for the load,Bi-grid inverter will convert the DC power supplied by battery into AC power and feed into the AC general line for the using of the load.
Characteristics:
1. Main circuit adopt USA TI company DSP chip and IGBT from Mitsubishi,driving
protection is from Japan Mitsubishi chip,the part of off-grid output adopt isolation transformer,safe and reliable.
2. With SPWM pulse width modulation technology,pure sine wave output,power factor
approaches 1,low current harmonic content
3. MPPT(Maximum Power Point Tracking)Technology
4. Inverting current close-cycle control,power to control and adjustable
5. With wide input voltage range to adapt to the needs of different occasions
6. Have a full range scheme of power protection and perfect self-detection and self- protection function.When there’s something wrong with the system,it will automatically stop working.
7. Close circuit structure, the maximum efficiency> 92%
- Max input power 100KW
- Max efficiency 95%
- Max open voltage 800V
- DC input voltage range 380-750V
- Rated DC input current 244A
- AC output voltage range 310-450VAC(Un=380)
- Output frequency range 48-51.5Hz(Fn=50)
- Function Automatically switch between on-grid and off-grid
- The on-grid turn to off-grid within 1s
- Seamlessly off-grid turn to on-grid,lights don’t flash, the computer doesn’t shut down.
- Discharge way Constant power discharge(output frequency adjustable)
- Charge way Constant voltage/constant current(charge voltage adjustable,charge current adjustable)
Charging and discharging mode adjust according to the grid
- Power consuming/power consuming at night <10W
- Required grid mode 3phase 4wire
- Output current wave distortion <3%
- Power factor >0.99
Automatically operating condition
- Fault handled 3Min
Automatically switch to off-grid mode after power failure
- isolated transformer (yes/no) yes
- ground fault test(yes/no) yes
- Output overload protection(yes/no) yes
- DC over/under voltage protection(yes/no) yes
- AC over/under voltage protection(yes/no) yes
- Over/under frequency protection(yes/no) yes
- other protection anti-island,current limit,over current,overheat
- Temperature range －20℃～＋55℃
Off-gird output rated parameter
- Output voltage 380V
- Output frequency 50Hz
- Humidity 0～95%，non-condensing
- The highest full load operating altitude <=2000m
- protect degree IP20
- cooling method Wind cooling
- Displaying Touch screen
- communication port Ethernet(Modbus TcpIp)
- Size 1000*800*2060(mm)
- weight 900kg