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3 Description of the station
components
This chapter describes the station components.
3.1
SolarMax TS-SV inverter
The main component of a station is the SolarMax TS-SV central inverter. It converts
the PV generator’s direct current into alternating current which conforms to public grid
parameters. The output of a station depends on the number of installed TS-SV inverters.
One to four TS-SV inverters together with an MCU make up an inverter system that is
connected to a medium-voltage transformer.
The TS-SV inverter consists of three independent power units. Each power unit has its
own MPP tracker, DC-end overvoltage conductors, power switches on the DC and AC end
(Q1 to Q6), a contactor at the AC end (K1 to K3) and EMV filters. All power switches are
accessible from outside when the inverter casing is closed.
The control units of the power units have two digital signal processors (DSP) which
assume all the monitoring, controlling and regulating tasks. All the safety-relevant values
are continuously monitored and compared by both processors. The result is greater oper-
ating safety and reliability. The DSP’s high performance enables precise and rapid identi-
fication of the maximum power points (MPP) of the PV generator and, combined with the
low-loss power unit, delivers maximum yields. The completely digital regulation ensures
outstanding quality of the current fed into the grid which means extremely negligible grid
reactions.
The inverters of the TS-SV series are capable of delivering reactive power if necessary to
actively support the mains during short blackouts, to reduce output in response to rising
mains frequency and to receive and implement remote control commands (power output
reduction, etc.).
The inverter comes from the factory configured for multi-MPPT operation. All the DC
inputs of the installed inverters must be connected in parallel and fitted with fuses for the
single MPPT operating mode. A short description of these operating modes can be found
in section 3.3 “Configuration variants of the station”.
The inverter is not fitted with potential separation. This is provided by the medium-voltage
transformer.
Summary of Contents for TS-SV
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