Robert Carl Nelles

6 Questions 10 Answers 0 Followers

Questions related from Robert Carl Nelles

How I can filter higher harmonics of a long high frequency power transmission line? LLC or LCL, what fits best?

Hello everyone!I want to filter the PWM output and lead the current on a long high frequency transmission line, what filter method fits best? Some Experience here?Thank you!

14 July 2017 7,189 2 View

What are the advantages of a High-Gain observer in comparison to standard observers like ELO,EKF or UKF without time-consuming high-gain operations?

Dear friends, I have read about High-Gain observers, but don't realize the advantages it give us in comparison to other observers.Can somebody tell me? If somebody has a review of High-gain...

26 October 2015 2,040 7 View

How can I estimate my Q and R of my Kalman Filter using as a position estimator for an IPMSM machine?

How I get my Q and R values of a Kalman filter for a good position estimation without only trial and error, are there ideas how choosing it, or methods?

26 September 2015 3,924 7 View

Which is the best way to calculate the voltage drop over a MOSFET of an inverter?

I calculate my voltages with my DC-link voltage and the duty cycles, but neglect a part of the voltage drop over my MOSFET.I have only given my R_mos, but there is more voltage drop I think, is there?

07 September 2015 2,263 11 View

Does Kalman Filter or Luenberger Observer have better performance, robustness to failures in parameter identification?

Sensorless control of IPMSM.I want to compare the Extended or Unscented Kalman Filter and Extended Luenberger Observer to estimate my position of an IPMSM machine.Can anybody say something, which...

04 September 2015 3,337 9 View

Does anybody know the best way to measure Ld(id,iq), Lq(id,iq) and PsiPM(id,iq) of an IPMSM connected to a converter and a load machine?

I have tried the methods of institutes in Nurmberg/Erlangen and Torino, but get failures to the worths of Ld(id,iq) and Lq(id,iq) the producer gives to us.I want to create a Lookup-Tables of...

03 September 2015 3,676 7 View