Asst. Prof. Dr. Alper ŞİŞMAN

• High Voltage
– Generation, transmission and distribution of electrical energy
• Electrical Machines
– Transformers
– AC/DC. Motors
– Step motors
– Actuators
• Electrical Wiring/ Lightning
• Power Electronics
• Control / Automation
• Electric Vehicles

• Electrical circuits
– Analog Circuits
– Digital Circuits
– Active/passive elements
• Semiconductors
– Diode
– Bipolar junction Transistor (BJT)
– Field effect Transtor (FET)
• Signal processing
– Analog and digital signal processing: Fourier transform, quantization, sampling
– Speech processing, digital image processing, data compression
– Filtering
• Telecommunication
• Biomedical Engineering

• Electricity generation is the process of generating electrical power from other sources of primary energy.
• Methods: Electromagnetic induction,
Electrochemistry (Battery), photoelectric effect.
• Electromag. Inductions: Nuclear, hydroelectric, fossil fuels, wind.

• Turbines: All turbines are driven by a fluid acting as an intermediate energy carrier. Many of the heat engines just mentioned are turbines. Other types of turbines can be driven by wind or falling water.
• Turbines are usually driven by the following carriers:
– Steam: Water is boiled by:
• Nuclear fission, fossil fuels (Efficiency: %60).
– Water, Wind.
• Photovoltaic panels: convert sunlight directly to electricity (%40).

• High voltage AC transmission (<500 kv)
– Losses
• Sub transmission lines (~ 70-150 kV)
– Economical reasons (HV equipment are expensive)
• User level transmission (~32-3.3 kV)
– Safety
• Why AC Transmission?
– HVDC power production is expensive
– The transformers enables simple voltage level conversion in AC
• HVDC transmission
– Low Loss, skin effect (AC)
– Synchronization problem of AC transmission
– Longer transmission lines
– Less environmental problems

• Load balancing
• Three Phase, Why?
– Principle of AC motor, Rotating Field
– High quality AC-DC conversion

• Transformers & Applications
– Voltage level conversion
– Isolation
• DC/AC motors, Generators
– AC-DC Servo Motors
• Step Motors
– Angular Position Control

• Rectifiers
– AC-DC
• Inverters/Converters
– DC-DC (SMPS)
– DC-AC
• Chopper
– AC-AC
• Motor Drivers
– H-Bridge

• Electronics deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies

• What are analog&digital signals?
• Analog circuits
• Digital Circuits
– ADC,DAC
• Analog vs. Digital (Comparison)

• Linear systems
• Fourier transform
– Time and frequency domain
• Implulse function
• Applications:
– Filtering
– Speech processing
– İmage processing