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TD140-038.11 | Version 1.1 | 22 March 2019
3.2 Function description
Storage of current from power generation systems
When the SENEC.Home Li is connected to the power generation system, electric power is supplied to the battery modules. Pre
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requisite is that he generator unit feeds the grid-conformant alternating current to the domestic power network. It can be either
be used directly in the domestic power network or stored temporarily in the battery modules. If required, the system supplies
the stored power to the domestic grid.
Controlling the energy flow
The electronic system controls primarily the energy flow into and out of the SENEC.Home Li. Additionally, the charge control ad
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justs the energy flow in the first line, based on the measuring values at the grid feed point.
Converting direct current to alternating current
The SENEC.Inverter (integrated batter inverter) converts the alternating current supplied by the power generator plant into
direct current. It is then stored in the battery modules. Electricity drawn from the system to supply the domestic power network
is converted back into alternating current and fed to the domestic grid.
Charge electronics
The control of the charging and discharging process is preconfigured in the system. It consists of a transformer, control unit
(MCU), fuses, grid and system protection devices (automatic disconnection devices) and a measuring unit.
The control communicates with the SENEC.Inverter and performs the parameter settings. The power meter measures and dis-
plays three-phase currents and voltages in both directions in the AC grid. This enables the measurement of electricity flows be
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tween the battery modules, power generation system and the domestic users. Also the charging and discharging of the battery
module are controlled.
Battery modules
According to the configuration, the SENEC.Home Li is equipped with a (SENEC.Home Li 2.5), two (SENEC.Home Li 5.0), three
(SENEC.Home Li 7.5) or four (SENEC.Home Li 10.0) battery modules. The battery modules store the supplied energy and release
it again. Each battery has an integrated battery management system which continuously monitors monitors the safety param-
eters for the module (temperature, current and voltage) to ensure smooth operation. It is able to shut down battery charging or
discharging in exceptional situations, independently of the software controlling the complete system.
