1. Control Electronics for MedAustron Power Converters
WP PO
04/10/2011
Ph. Fraboulet – WP PO Control

2. Last main achievements
Analogue acquisition interface tests (High Precision ADCs)
DC noise: <10 ppm peak-peak (1.7 ppm RMS)
Linearity: better than 10 ppm
More tests must be done, on more cards, to get more precise/stable figures (especially for linearity)
Current/Field control (RST control algorithm)
“Technology transfer” from Dr. Veenstra
Core of the algorithm implemented in the DSP
Test on a load simulator – It works !!!
!!! CRB and FED worked together !!!
Hardware validation
UHPI : Host Port Interface
I/O communication
04/10/2011
Ph. Fraboulet – WP PO Control

3. Next steps Interface definition between CRB and FED
CRB implementation to test the CRB driver in the PCC
SW requirements for the CRB – Architecture design
XML definition files for CRB
XML definition files for family A PCO
04/10/2011
Ph. Fraboulet – WP PO Control

4. RST Algorithm – the principle
RST = a way of implementing a digital control algorithm
Very generic. A PID controller can be implemented as a very simple case
Uses a predictive model (feed forward)
Compensate for
the “noise” of the system
the error of the model (static and dynamic)
We must know the system as well as possible to get the best performance
04/10/2011
Ph. Fraboulet – WP PO Control

5. RST Algorithm – the recipe
04/10/2011
Ph. Fraboulet – WP PO Control

6. RST Algorithm – the result
Simulated load:
L = 4 mH
R = 40 mΩ
Rate: 2 kHz (could 50kHz)
Results very close to simulation =
the model is good
the implementation is correct
04/10/2011
Ph. Fraboulet – WP PO Control

7. Questions ?
04/10/2011
Ph. Fraboulet – WP PO Control