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- String Configuration: Calculating minimum modules for a 48V bank, effects of series/parallel connections, and addressing mismatched modules.
- Thermal & Environmental Effects: Impact of Solar Insolation changes, calculating Maximum System Voltage in cold climates, and the role of NOCT vs. STC.
- Protection & Hardware: Function of Bypass Diodes (mitigating the “Christmas Light Effect”), Blocking Diodes, String Fuses, and GFDI (Ground Fault Detector Interrupters).
- Inverter Dynamics: Mandatory Anti-Islanding for grid-tied systems, managing Total Harmonic Distortion (THD), and handling Surge Ratings for inductive loads (pumps/fridges).
- MPPT Algorithms: Detailed logic for Incremental Conductance and Perturb and Observe methods.
- System Sizing: Understanding Array-to-Load Ratio (ALR), Fill Factor (FF), and Final System Yield.
- Installation Safety: Proper use of DC Disconnects, Bonding aluminum frames, Insulation Resistance (Megger) testing, and safety hazards of disconnecting MC4 connectors under load.
- Maintenance & Diagnosis: Identifying Hot Spots via IR cameras and mitigating Potential Induced Degradation (PID).
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