Define power electronics.
The study and application of electronic devices to control and convert electrical power.
What is a converter in power electronics?
A device that changes electrical energy from one form to another, such as AC to DC.
True or false: Inverters convert DC to AC.
TRUE
Fill in the blank: A rectifier converts _______ to DC.
AC
What is the function of a chopper?
To convert fixed DC voltage to variable DC voltage.
Define thyristor.
A semiconductor device used to control power, acting as a switch.
What does PWM stand for?
Pulse Width Modulation
True or false: MOSFETs are used for high-speed switching applications.
TRUE
Fill in the blank: IGBT stands for _______.
Insulated Gate Bipolar Transistor
What is the purpose of a filter in power electronics?
To remove unwanted frequency components from a signal.
Define buck converter.
A DC-DC converter that steps down voltage while stepping up current.
What is a boost converter?
A DC-DC converter that steps up voltage while stepping down current.
True or false: Flyback converters are used for isolated power conversion.
TRUE
Fill in the blank: Soft switching reduces _______ losses in power converters.
switching
What is thermal management in power electronics?
The process of controlling the temperature of electronic components to ensure reliability.
Define power factor.
The ratio of real power to apparent power in an electrical system.
What is the role of a snubber circuit?
To protect switching devices from voltage spikes.
True or false: Active power filters are used to improve power quality.
TRUE
Fill in the blank: Hysteresis control is often used in _______ converters.
DC-DC
What is a voltage regulator?
A device that maintains a constant output voltage despite variations in input voltage.
Define switching loss.
Energy lost during the transition of a switch from on to off state.
What does thermal runaway refer to?
A condition where increasing temperature causes further increases in temperature, potentially damaging components.
True or false: DC-AC converters are also known as inverters.
TRUE
Fill in the blank: Capacitors are used in power electronics for _______ filtering.
voltage
