
Explain why pwm matters in power electronics, show the wasteful resistor approach, and introduce transistor linear operation with load lines and power dissipation concerns.
Learn to compute rms and average values for periodic signals by decomposing waveforms, applying duty cycle concepts, and handling pulsating, rectified, sinusoidal, and offset waveforms.
Assess the cost feasibility of higher-efficiency converters by calculating energy losses and payback time, comparing 86% vs 96.8% efficiency, and examine switching losses during on transitions.
In task 2, please use the diode RRE02VSM4S from the Silicon type diode list .... You will not find that one mentioned in the video in the latest version of LTspice. You should get similar results
Add a new component to your spice library by locating its spice model online, downloading it from Mouser, and importing it for simulation.
Discover thermal considerations in power electronics, focusing on junction temperature, thermal resistance, and heat flow from junction to ambient, and how heatsinks, grease, and fans manage dissipation.
Explore practical switches, including controlled and passive devices, and learn how conduction and switching losses arise and are calculated for resistive and inductive loads using a triangular approximation.
Compare switching losses for resistive and inductive loads using a free-wheeling diode, with XPRIZE validation, and analyze voltage and current waveforms to estimate on-time, off-time, and peak losses.
Explore how switching and conduction losses are calculated for resistive and inductive loads, using duty cycles and voltages, then design thermal management with heatsinks.
Conduct lab tasks on a chopper circuit to analyze duty cycle and efficiency with a BGT and MOSFET, and design a heat sink to keep MOSFET temperature under 100 degrees.
Power diodes pass current in one direction with a forward voltage drop, provide high blocking voltage, and exhibit reverse leakage and reverse recovery that cause switching losses.
Explore types of power diodes—general purpose, fast recovery, and Schottky barrier diodes—focusing on reverse recovery, forward voltage, leakage, and the rise of wide bandgap devices.
This course introduces you to the basics of Power Electronics including switches, Inverters, DC/DC converters and all that supported by LTSpice. We cover here how to calculate the power dissipation and thermal stresses for different groups of waveforms on switches by hand and using LTspice. That includes sizing the heat sink and enabling you to decide whether active cooling is required. We introduce you to Silicon, Silicon Carbide and Gallium Nitrate switches and the main differences to enable you to choose the best for an application. You will be able to analyse the DC/DC Converters: Buck, Boost, Buck-Boost and inverters and understand how the current flows in a circuit and to derive the steady state relations between the input and the output.
LTSpice is used to validate the calculation and help to calculate a converter efficiency. We use LTSpice to design a closed-loop Buck converter. All that is supported by problem sets and labs. Problem sets are a group of problems that we supply for you to practice your understanding and we supply also the solutions. For the labs we introduce you to some tasks that will help you to conquer LTspice.
We are expecting you to engage totally with the course and give enough time to understand each part and practice the problem sets. I am confident that will be an excellent course for you to understand any more advanced topics in power electronics.