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.
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%
|Isolation||Low frequency transformer isolation|
|Max. DC input power||1550KWp||3200KWp|
|Max. DC input
|Input voltage range||450Vdc~800Vdc|
|Nominal AC output power||1500KW||3000KW|
|THD of AC current||<3%(nominal power)|
|Power factor||>0.99(nominal power)|
|Nominal AC output voltage||380Vac±15%|
|Automatic restart time||2min(adjustable)|
|Protection||Input reverse connection protection,output short circuit protection, overheat protection,overload protection|
|Altitude(m)||≤6000meters(Over 2000 meters to reduce
the using amount)
|Cooling method||Controlled forced-air cool|