Using the given technical specifications, a PV system design using TWENTY SEVEN (27) SUNPOWER SPR-210 PV modules configured in a three by nine array combination are being considered.

1. If no load is connected to the PV array, determine the expected maximum string current and string voltage at Standard Test Condition (STC).

2. If a load is now connected to the PV array, determine the expected peak power output of the complete array if the operating temperature is 60deg C, solar irradiance is 850 W/m^2, derating factor due to dirt is 2% and inverter efficiency is 96%.

Answer these two questions and show full, unabridged step-by-step working without taking any shortcuts.

Subject: Photovoltaic Technology

Table Q1(a): Technical Specification for SPR-210 PV Module Electrical Characteristics Peak Power - Pmax 210 W Rated Voltage - Vmp 40 V Rated Current - Imp 5.25 A Open Circuit Voltage - Voc 47.8 V Short Circuit Current - Isc 5.65 A Series Fuse Rating 15 A Maximum System Voltage 600 V - UL or 1000V - IEC Power - 0.38 % / C Temperature Coefficients Voltage - 136.8 mV/C Current 2.2 mA / C Module Efficiency 16.9% Mechanical Characteristics Dimensions 1559 L x 798 W x 46 D mm Weight 16 kg Table Q1(a): Technical Specification for SPR-210 PV Module Electrical Characteristics Peak Power - Pmax 210 W Rated Voltage - Vmp 40 V Rated Current - Imp 5.25 A Open Circuit Voltage - Voc 47.8 V Short Circuit Current - Isc 5.65 A Series Fuse Rating 15 A Maximum System Voltage 600 V - UL or 1000V - IEC Power - 0.38 % / C Temperature Coefficients Voltage - 136.8 mV/C Current 2.2 mA / C Module Efficiency 16.9% Mechanical Characteristics Dimensions 1559 L x 798 W x 46 D mm Weight 16 kg