Hopewind hopeSun 10KTL, User Manual

Page: 9 / 39

User Manual of String Inverter
6
2.1.2 Operation Mode
hopeSunHV string inverter includes three operation modes: standby mode, operation mode
and shutdown mode. The three mode switching conditions are shown in Figure 2-5.
Figure 2-5 hopeSun string inverter operation mode
Operation Mode Description
Standby
1) Standby mode mainly refers to the external environment doesn't meet the operation
condition, such as insufficient sunshine or DC switch is turned off. Under this mode, the
inverter continuously performs self-checking and enters operation mode once the
operation conditions are satisfied.
2) Under standby mode, the inverter will enter shutdown mode after detecting the
shutdown command or faults.
Operation
1) Under the operation mode, the inverter converts DC current of photovoltaic arrays into
AC current and feeds it to the grid. The inverter performs MPPT arithmetic and outputs
the maximum power of photovoltaic arrays.
2) The inverter will enter shutdown mode after detecting the faults or shutdown
command.
3) The inverter will enter standby mode after detecting the input power of photovoltaic
arrays is lower than the on-grid power generation condition.
Shutdown
1) If the inverter detects a fault occurrence or shutdown command during standby or
operation mode, it enters shutdown mode.
2) In the shutdown mode, if the inverter detects that the fault has been cleared or the
power-on command, it enters standby mode.
2.2 System Configuration and Application
2.2.1 Application Description
Figure 2-6 shows the application diagram of the string inverter network, Figure 2-7 shows the
design scheme of the distributed PV power plant.
Figure 2-6 Application diagram of the string inverter network