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1answer
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Question on the right PWM frequency for Permanent Magnet DC Motors

I know that there are some posts in this site about this question. I don't know if there's a way to find out the "ideal" PWM frequency for motor control. Usually they recommend to be safe in a range ...
0
votes
1answer
149 views

Maximum switching frequency

Is it possible to calculate maximum switching frequency of IGBT having only datasheet in hands? https://www.semikron.com/dl/service-support/downloads/download/semikron-datasheet-skm200gal173d-...
1
vote
1answer
1k views

How does carrier frequency and pulse width modulation in a VFD work together to control AC motor speed?

There is a lot of online information about this but there is also a lot of contradictory information. What is carrier frequency exactly and does it stay the same or does it vary? I understand the ...
0
votes
2answers
115 views

What is the difference between high and low frequency IGBTs?

I would like to know which parameters make the difference between a high frequency IGBT and a low frequency IGBT. For example, I read the AIKW50N65DF5(15 - 120kHz) datasheet and the AIKW50N60CT(0 - ...
2
votes
6answers
479 views

Controlling the frequency of AC used to energize an electromagnet

I am trying to build an electromagnetic pendulum which essentially has a pendulum arm with a permanent magnet at its end which is 'kicked' by an electromagnet placed at the mean position to drive the ...
-2
votes
1answer
145 views

Amplifiying a 40kHz square signal to a higher frequency [closed]

So I designed a circuit with these two main parts: 1. The timer, powered by 12V DC consists of a 555 timer circuit enhanced with Op-Amp regulator circuit. This part is connected to irg4ph40upbf IGBT. ...