Holistic Approach, Study and Analysis of Electrical Circuits of PV Systems

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INTRODUCTION TO ELECTRICAL CIRCUITS

• General information
• Introduction to electrical circuits
• Basic electrical quantities (electrical elements, Analysis of voltage, current, active, reactive, apparent power, single-phase-three-phase system)
• Power generation
• Types of Currents | DC vs AC (Tesla vs Edison)
• Transformers
• Electricity transmission and networks
• Electricity Transmission (DC vs AC)
• PV General Info
• Photovoltaic effect
• Explaining electron movement
• Power Electronics
• Inverter operating principle (DC to AC)
• Operating principle of DC/DC converters
• AC to DC operation (rectification)

DESIGN OF PV SYSTEMS

• Study of Basics at PV design
• Types of PV panels and inverters
• Choice of converter/inverter
• Shadowing effect
• PV system dimensioning
• Energy efficiency assessment
• Brief explanation of the Net-Metering & Zero-Feed-In solution

DC-AC CABLES AND ELECTRICAL PANELS

• DC and AC (DC/AC) Cables
• Selection of DC cable cross-sections
• AC cable cross-section selection
• Choice of rack/pipe sizes
• PV system electrical panel
• Direct Current (DC) panel
• Alternating Current (AC) panel
• One-line drawing of PV installation
• Characteristics of Measuring Instruments

GROUNDING AND LIGHTNING PROTECTION

• Earthing  and Grounding definitions
• Perimeter Grounding – Ground electrode – Expectations and methods of grounding connections
• Grounding VS earthing
• PV grounding – examples
• Grounding Standards
• Lightning protection

INDICATIVE CABLE DIMENSIONING STUDY AND SINGLE LINE DIAGRAM

• Energy study using specific software and design of a Single Line Diagram (SLD)
• DC cable sizing
• Dimensioning of AC cables
• evaluation of O&M

Professional benefits – Advantages:      

• Familiarization with the electrical circuits and electrical components of PV systems.
• Ability to properly calculate and evaluate equipment and understand all potential problems that may occur during design and installation.
• Ability to submit correct & comprehensive quotations
• Minimize power losses in the installation and increase its safety level.
• Optimize performance and quality of the delivered projects