Power Electronics Problem Set 2a

Basics of Power Electronics - Walid Issa
27 Triacs | Power Electronics
• 28 Triacs | Power Elec...
26 Thyristors | Power Electronics
• 27 Thyristors | Power ...
25 Inverters | Power Electronics
• 26 Inverters | Power ...
24 Gate Drivers | Power Electronics
• 25 Gate Drivers | Powe...
23 Mosfet Consideration | Power Electronics
• 24 Mosfet Consideratio...
22 Power Mosfet Transistors | Power Electronics
• 23 Power Mosfet Transi...
21 Power BJT Transistors| Power Electronics
• 22 Power BJT Transisto...
20 Power Diodes Types | Power Electronics
• 20 Power Diodes Types ...
19 Power Diodes | Power Electronics
• 19 Power Diodes | Powe...
18 Which Switch to Choose ? | Power Electronics
• 18 Which Switch to Cho...
Mobile Thermal Camera HT201: bit.ly/3kuREi1
17 Switching Losses (Worked Examples) | Power Electronics
• 17 Switching Losses (W...
16 Switching Losses and LTSpice | Power Electronics
• 16 Switching Losses an...
15 Ideal VS Practical Switches
• 15 Ideal VS Practical ...
Thermal Calculations using LTSpice
Part 1: • 12 Power Elecronics: T...
Part 2: • 13 Power Elecronics: T...
thermal management,thermal,power electronics,switching losses,ltspice, walid issa, power diodes

[@zaidhamid1622]

For problem 3, when calculating the conduction losses you multiply by 4 (number of transistors) but we just have two-transistor connected at the same time! so multiplying by 2 or 4?!! thank you I really appreciate your explanation.

[@WalidIssaPlusE]

it is 4 number of switches not number of groups

[@zaidhamid1622]

if the duty cycle is 50%, how the ton is less than the toff? (in problem 1)
the conduction losses of the diode, it does not mean just in the on-time so the calculation depends just on the rms of the current multiple by Ron ?!(in problem 2)

[@WalidIssaPlusE]

ton and toff of the transistion from on to off or off to on and not the ton time of the PWM .. these are ton and off of the switching times
i did not get your second point

[@hammasouissi4110]

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