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You are right: there is no clear consistent mapping for the zeroes at infinity. However, in this example, the z-domain zero at zero corresponds to the zero at infinity in the s-domain.

@@frankydebruyne9842 Thank you for your reply. But to be clear, s=-infinity (negative infinity) is not the region of convergence for the H(s)? and also can this uncertainty about the placement of zeros after sampling cause any issues in any topic?

and also is there a reference that goes into more detail as to why the poles and finite zeros are mapped pretty accurately while the infinite zeros are not mapped consistently? Thanks

Not that I know off. The important part is that the relation z = exp(Ts*s) is valid for the "usual" zeroes when Ts --> 0. This has applications for the matched poles - zeroes method. The zeroes at infinity are tackled differently.

I have not found any. The references used are at the beginning of the course. Regards.

Yes, there is a channel on "State-space control". Regards.

Yes, you can connect an AC load and then obtain a "voltage source" (control somewhat different). Of course, you have to maintain the DC bus voltage. For instance, you could connect the inverter to the grid tied inverter covered in the course and then you obtain a bidirectional voltage source.

Thank you 👍 great video BTW

Thanks for the feedback!

Yes, nature is crual !

Thank you for your comment and feedback. You will some Information on PLLs in later videos. Best regards.

See Video_7_Interlocks for strategies to enable the inverter appropriately.

The email is at the beginning of the presentation. Regards.

It's my pleasure. Thank you for your feedback.

can you share me slides?

Unfortunately, the slides are only for ECAM students. I hope you understand.

all right , thanks , i want to ask few questions so can you share me your email or something to contack if possible , thanks @@frankydebruyne9842

Hello mr , I have few questions so can you share me your emails to contact you if possible? Thanks

The first equation is the process (P): input Vinv,dq and output Iinv,dq. The current process output needs to be controlled. The second equation you mention is simply the controller (C): input control error Iinv,dq,SP - Iinv,dq and output Vinv,dq, i.e. a current controller. We have a standard closed-loop system. You should probably also consult video 3.

@@frankydebruyne9842 Thanks Sir! Video 3 tells everything. Your lectures are so natural and spontaneous, very normalized that anybody can understand. Really, your lectures are like art. THANKS

Thank you for the nice feedback !

Sorry, the files are only for ECAM students. I hope you understand.

Thanks for the nice feedback !

Not always easy to establish such a model. There is an example just before in the video with the inverted pendulum and Coulomb friction. In this very simple case, A_di is just zero. Hope this is helpful.

Thank you for the feedback. I have seen that you have sent me an email. Regards.

@@frankydebruyne9842 thnx dear dr i found your account and im waiting your answers have a good day

Thank you for the nice feedback !

@@frankydebruyne9842 thanks. I always wanted some more math based explanations of the control theory. Usually courses just dump things to be used. Thanks for your more math based approach.

Unfortunately, the slides are only for ECAM students. I hope you understand. Regards.

Right ! Thank you for your input. The correction is in the link below.

drive.google.com/file/d/191fQMYzKgCNPR55TB6eXXkIDggkm-bjN/view?usp=sharing

Thanks for the feedback. You will have to look at the literature. It will be a variation on the quadcopter model considered in this course. Regards.

I will keep this in mind ! Thank you for the nice feedback

Just look at video 1.

You can work with the variable z or z^-1. Just look at the slide in 09:16. I hope this is helpful.

degree b = degree b- = 1, degree b+ = 0. I hope this is helpful.

Thank you very much@@frankydebruyne9842

Thanks for the feedback !

please can you suggest a good reference for your dead beat explanation?

@@samuelamune5672 You will find the main references in the first course of the channel. I also like: "Automatique linéaire échantillonnée' by Gonzalo_Cabodevila. The document is in French.

Thank you for your feedback. Unfortunately, I have no plans for a video on grid convertor control using state-space methods.

Thanks for the feedback !

Thanks for the feedback !

@@frankydebruyne9842 Prof Marco Lissere is teaching us Grid Converters😀

You will see that he is in my references several times !

@@frankydebruyne9842 Yeah, I saw that👍

Unfortunately, only the video is made available.

You are right ! You can also tune the controller more aggressively by choosing a smaller desired closed-loop time constant (= tuning parameter for IMC tuning). In some applications where the DC bus is coupled to another DC/DC inverter, it might be useful to use the DC current as a feedforward for the DC bus control. Thank you for the feedback.

Yes, you need a model of the system in state-space format in order to reconstruct the state. This model could be the linearisation of a nonlinear system around an operating point.

You should have a look at part 3 ! The polynomial influences the transfer functions from N --> PV, DL --> PV, DV --> PV. You should select the observer polynomial in order to obtain the right balance between disturbance rejection (load disturbances and ouput disturbances) and sensitivity to noise. Hope this helps. No plans for a new video. Regards.

​@@frankydebruyne9842Thank you very much

Or you can implement a 3ph + N grid coupling; you will need four legs !

Exactly !

@@frankydebruyne9842 Thanks for the reply! Great series!

Thanks for the nice feedback !

Thank you for the nice feedback. The yaw rotation results from a desequilibrium in the torques. You will find the equation in the video.

Thank you for the very nice feedback

Thank you for the nice feedback

Hi there. Thank you for your request. Unfortunately, this is not a subject I teach. Maybe later when I retire. 😄

Thanks for the feedback. Unfortunately the slides are for ECAM students only. I hope you understand. Regards.

Thank you for the nice feedback.

Thanks for the feedback. Unfortunately the slides are for ECAM students only. I hope you understand. Regards.

No problem sir. I totally understand that. Thanks again for the lectures.