Schematic Diagram
The SUN2000 receives inputs from up to two PV strings. Then the inputs are grouped into two MPPT routes inside the SUN2000 to track the maximum power point of the PV strings. The DC power is then converted into single-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides.
The SUN2000 uses a reserved battery port for energy storage expansion. Battery performs charging and discharging operations according to the battery working mode.
Figure 2-7 Schematic diagram![]()
Working Mode
Figure 2-8 Working modes![]()
Table 2-3 Working mode descriptionWorking mode
|
Description
|
Standby mode
|
The SUN2000 enters Standby mode when the external environment does not meet the requirements for starting the SUN2000. In Standby mode:
- The SUN2000 continuously detects its operation status. Once the operating conditions are met, the SUN2000 enters Operating mode.
- If the SUN2000 detects a shutdown command or a fault after startup, it enters Shutdown mode.
|
Operating mode
|
In Operating mode:
- The SUN2000 converts DC power from PV strings into AC power and feeds the power to the power grid.
- The SUN2000 tracks the maximum power point to maximize the PV string output power.
- If the SUN2000 detects a shutdown command or a fault, it enters Shutdown mode.
- If the SUN2000 detects that the output power of PV strings does not meet the requirements for grid-tied power generation, it enters Standby mode.
|
Shutdown mode
|
- In Standby or Operating mode, if the SUN2000 detects a shutdown command or a fault, it enters Shutdown mode.
- In Shutdown mode, if the SUN2000 detects that the fault is rectified or the startup command is executed, the SUN2000 enters Standby mode.
|