Omron KP100L-OD - 12-2010 User Manual page 25

1 Overview
MPPT (Maximum Power Point Tracking)
3 pairs of positive and negative DC input channels are connected to three sets of MPP Tracking.
The output power of solar modules varies depending on the sunshine irradiation and the temperature of the
modules. In order to use the unstable output of the solar modules efficiently, the KP100L searches for the
operating voltage that will produce the maximum output power while it converts the DC input voltage. The
KP100L has 3 MPPT. The topology of the MPPT is mainly a booster. Each booster steps up the DC input voltage
to a higher DC BUS voltage. User can connect differently-aligned string as 3 MPPT operate independently as
illustrated in the figure bellow. This construction achieves high power generation and flexible sizing of PV string.
DCP
DCV
DCP
DCV
DCP
DCV
DC Bus
The three sets of MPPT store DC power via the DC/DC booster to the DC bus.
DC/AC Inverter
The DC bus is connected to the DC/AC inverter, which converts DC power to AC power.
Grid-Connection Relays
The two relays, RLY1 and RLY2, control the connection of the KP100L to grid via CPU1 and CPU2.
Output Lines
4 output lines (L1, L2, L3 and N) and PE represent the 3-phase 4-wire AC power transmission to grid.
1 - 4
Solar module 1
+
-
Solar module 2
+
-
Solar module 3
+
-
Input specifications:
a) DC input voltage range: 200 to 850 VDC
b) MPPT voltage range: 225 to 800 VDC
Input limitations:
a) Maximum input open-circuit voltage: 850 VDC
b) Maximum input current per Tracking: 13 ADC
MPPT controls not to exceed 13 ADC.
c) Maximum input power per Tracking: 5500 W
MPPT controls not to exceed 5500 W.
Grid Connect Photovoltaic Inverte KP100L-OD-USER'S MANUAL