Introduction to Inverter EMC Simulation

This is an introductory lecture about the simulation of Inverter EMC.
Contents:
00:00 Introduction
00:40 Motivation
02:58 System schematic
04:53 Inverter circuit
07:07 Noise source and propagation modes
11:30 Schematic results
12:26 Switch model
15:38 Capacitor parasitics
17:27 Capacitance to PE
19:06 Filtering options
24:47 Realistic model
26:10 RLC simulation
29:57 Full-wave coupled to circuit
33:41 Comparison RLC vs Full-wave
36:05 Current visualization
39:07 Component placement
41:25 Simulation & measurement
43:15 Summary

[Suryanapatechenthu]

Thank you for the great channel and content. Really appreciate it. If you can create a tutorial showing CAD import, simplification of design, creating cables and simulating radiated and conducted emissions, it would be extremely valuable for a lot of people. Especially from an experienced user like you.

[mwengineer]

Subscribed. Definitely coming back with hope that more of such detailed stuff will be posted. And off course many thanks for sharing.

[mengxintang]

Very helpful video! Is SVPWM used for inverter control in the video? Recently, I learned to build a model and found that the control signal could not be realized according to the expected results. I would like to ask you how to achieve it in signal end 1-6. Thank you very much!

[krisjk]

I have a methodology question. It is said that the earlier emc issues are considered in the design the better. However things keep changing as the project develops.

What can be done during the mechanical design phase and at the end of first proto build to make maximum use of emc design work

[jayakrishnanharikumaran]

Should a parasitic cap be modelled from the switching node [mid point of the sw leg] to the PE?

[muh.nuraqillainzaghi]

hi, thanks for sharing about EMC for inverter. i have question about inverter circuit, how to import spice model for mosfet? i have tried but get error.

[prof.gregoryalmeida]

Nice presentation. Do you have any video or link suggestion in where to find the desig guidelines or rule-of-thumb to Pi-Filter and Cy caps ? Thank you.

[muh.nuraqillainzaghi]

hello mr. Andreas Barchanski, how to show the frequency domain graphic about common mode and differential mode? what task do you use?

[muh.nuraqillainzaghi]

hello mr. Andreas Barchanski, may I get to know about how to set PWM for gate mosfet in CST Studio Suite? Is that import result from other software, or can set in CST directly?

[MJ-vtkp]

Hi thank you for this. Something for a discussion: sometimes there is also a filter after inverter bridge for filtering noise from the motor, so you probably do not have noise created by the motor?

[jayakrishnanharikumaran]

How was the noise separated into common mode and differential mode in the simulation? Do we apply a math operation
Vp-Vn = diff noise and Vp+Vn = CM noise?

[JoannaPirieHill]

Great video, Thank you. Why use a filter in the first place? Do we really care about the conducted RF currents flowing back to the battery? At RF frequencies the battery is an array of capacitors and the length of the cables are inductors. Okay, so there are high RF currents in this cable. Put these currents in a suitably designed transmission line. Can your software be used to design a transmission line cable with appropriate DC and AC capabilities that would constrain these currents without creating harmful radio interference?

[sravanslv]

I m interested tolearn. Could please suggest any training centres?