As we increase the switching frequency of the converter, how does it impact the ripple voltage and ripple current on the DC Link capacitor e.g. in the case of an H Bridge converter.
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Dear Muhammad Ibrahim Munir
in Dc-Dc converters for example a boost converter, when you increase the switching Frequency, you will see that the ripple of inductance current and capacitance voltage reduce. but it cause to increase power loss.
Best regards
Dear Muhammad Ibrahim Munir
in Dc-Dc converters for example a boost converter, when you increase the switching Frequency, you will see that the ripple of inductance current and capacitance voltage reduce. but it cause to increase power loss.
Best regards
@Mehdi Mohammadi,
Thank you for your response, so we can conclude that upon increasing the switching frequency we can decrease the voltage ripple but at the cost of switching and conduction losses? When you say power loss you are referring to switching losses?
A higher switching frequency will result in lower ripple current. Then a smaller buffer inductance can be used. The inductor is used as an energy storage device, when the semiconductor switch is on the current in the inductor ramps up and energy (0.5*L*I*I) is stored. When the switch turns off, this energy is released into the load. As a conclusion, it is a tradeoff because the switching losses are going to be higher and your control loop should be faster, which could overload your controller.
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