PPT: Power Semiconductor Diodes & Transistors | Power Electronics - Electrical Engineering (EE) PDF Download

 Page 1


Power Semiconductor 
Diodes & Transistors
Page 2


Power Semiconductor 
Diodes & Transistors
Introduction to Power 
Electronics
Power Electronics combines electric power, electronics and control systems to 
manage power conversion through solid state semiconductor devices and circuits.
While power engineering deals with generation and distribution of electric power, 
electronics focuses on semiconductor devices for efficient power conversion.
Power Engineering
Generation, transmission and distribution of electric power
Electronics
Solid state semiconductor devices and circuits
Control Systems
Meeting desired control objectives for power conversion
Page 3


Power Semiconductor 
Diodes & Transistors
Introduction to Power 
Electronics
Power Electronics combines electric power, electronics and control systems to 
manage power conversion through solid state semiconductor devices and circuits.
While power engineering deals with generation and distribution of electric power, 
electronics focuses on semiconductor devices for efficient power conversion.
Power Engineering
Generation, transmission and distribution of electric power
Electronics
Solid state semiconductor devices and circuits
Control Systems
Meeting desired control objectives for power conversion
Applications of Power Electronics
It is literally impossible to list all the applications of power electronics today; it has penetrated almost all fields where 
electrical energy is in the picture. This trend is ever increasing with new devices and integrated design of power 
semiconductor devices and controllers.
The day is not far when all electrical energy in the world will pass through power electronic systems. Below is a brief 
overview of the diverse applications.
Industrial 
Applications
Machine tools, furnaces, pumps, 
compressors, welding 
equipment, and industrial lasers
Domestic 
Applications
Cooking equipment, lighting, 
heating, air conditioners, 
refrigerators, and entertainment 
systems
Utility Systems
HVDC transmission, alternative 
energy sources, and energy 
storage systems
Page 4


Power Semiconductor 
Diodes & Transistors
Introduction to Power 
Electronics
Power Electronics combines electric power, electronics and control systems to 
manage power conversion through solid state semiconductor devices and circuits.
While power engineering deals with generation and distribution of electric power, 
electronics focuses on semiconductor devices for efficient power conversion.
Power Engineering
Generation, transmission and distribution of electric power
Electronics
Solid state semiconductor devices and circuits
Control Systems
Meeting desired control objectives for power conversion
Applications of Power Electronics
It is literally impossible to list all the applications of power electronics today; it has penetrated almost all fields where 
electrical energy is in the picture. This trend is ever increasing with new devices and integrated design of power 
semiconductor devices and controllers.
The day is not far when all electrical energy in the world will pass through power electronic systems. Below is a brief 
overview of the diverse applications.
Industrial 
Applications
Machine tools, furnaces, pumps, 
compressors, welding 
equipment, and industrial lasers
Domestic 
Applications
Cooking equipment, lighting, 
heating, air conditioners, 
refrigerators, and entertainment 
systems
Utility Systems
HVDC transmission, alternative 
energy sources, and energy 
storage systems
Diverse Applications of Power 
Electronics
Power electronics has become integral to numerous sectors, from everyday consumer products to specialized industrial systems. 
The versatility of these devices enables precise control of electrical power across various applications.
Commercial & 
Domestic
Heating and air conditioning 
systems
Lighting control and UPS
Refrigeration and cooking 
equipment
Computers and entertainment 
systems
Industrial & 
Transportation
Machine tools and industrial 
lasers
Welding equipment and 
induction heating
Electric vehicles and locomotives
Engine controls and battery 
chargers
Specialized 
Applications
Aerospace power systems
Telecommunications power 
supplies
HVDC transmission systems
Alternative energy integration
Page 5


Power Semiconductor 
Diodes & Transistors
Introduction to Power 
Electronics
Power Electronics combines electric power, electronics and control systems to 
manage power conversion through solid state semiconductor devices and circuits.
While power engineering deals with generation and distribution of electric power, 
electronics focuses on semiconductor devices for efficient power conversion.
Power Engineering
Generation, transmission and distribution of electric power
Electronics
Solid state semiconductor devices and circuits
Control Systems
Meeting desired control objectives for power conversion
Applications of Power Electronics
It is literally impossible to list all the applications of power electronics today; it has penetrated almost all fields where 
electrical energy is in the picture. This trend is ever increasing with new devices and integrated design of power 
semiconductor devices and controllers.
The day is not far when all electrical energy in the world will pass through power electronic systems. Below is a brief 
overview of the diverse applications.
Industrial 
Applications
Machine tools, furnaces, pumps, 
compressors, welding 
equipment, and industrial lasers
Domestic 
Applications
Cooking equipment, lighting, 
heating, air conditioners, 
refrigerators, and entertainment 
systems
Utility Systems
HVDC transmission, alternative 
energy sources, and energy 
storage systems
Diverse Applications of Power 
Electronics
Power electronics has become integral to numerous sectors, from everyday consumer products to specialized industrial systems. 
The versatility of these devices enables precise control of electrical power across various applications.
Commercial & 
Domestic
Heating and air conditioning 
systems
Lighting control and UPS
Refrigeration and cooking 
equipment
Computers and entertainment 
systems
Industrial & 
Transportation
Machine tools and industrial 
lasers
Welding equipment and 
induction heating
Electric vehicles and locomotives
Engine controls and battery 
chargers
Specialized 
Applications
Aerospace power systems
Telecommunications power 
supplies
HVDC transmission systems
Alternative energy integration
Power Semiconductor 
Devices
Following the development of the first thyristor (SCR) in 1957, power electronics evolved 
significantly. While SCRs dominated industrial applications until 1970, numerous power 
semiconductor devices have since emerged and become commercially available.
Power Diodes
Two-terminal semiconductor devices
Thyristors
SCRs, GTOs, RCTs, SITHs, and other 
variants
Power BJTs
High-current switching transistors
Power MOSFETs
Voltage-controlled semiconductor 
devices
IGBTs & SITs
Hybrid devices combining MOSFET and BJT features