This assignment have to be answered by each participant. It refers to the content of the course and the experience of the participants. Please answer the question when you have worked through the material.
As can be seen in the list below, different types of inverters can be used in PV off-grid systems.
Please list and explain sample applications of at least three of these different types of inverters and mention the components required for the particular configuration (e.g. batteries, additional charge controllers etc), the size of the PV off-grid system (in kWp) and the kind of loads being powered (e.g. rural household, solar water pump etc.).
Inverter types that can be used in off-grid systems:
- battery inverters (‘one direction’ or ‘unidirectional’);
- battery inverters with integrated solar charge controllers;
- inverter-chargers for DC-coupled systems (often called ‘bi-directional’);
- inverter-chargers for AC-coupled systems (also referred to as ‘bi-directional’, and sometimes called ‘island inverters’);
- grid-connected PV inverters (also called ‘grid-tied’ or ‘utility-interactive’) in off-grid systems.
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