TY - GEN
T1 - Prediction techniques compensating delay times caused by digital control of a three-phase buck-type PWM rectifier system
AU - Nussbaumer, T.
AU - Heldwein, M. L.
AU - Gong, G.
AU - Kolar, J. W.
PY - 2005
Y1 - 2005
N2 - The digital control of a three-phase, three switch buck-type rectifier system is analyzed in this paper. Three main sources of delay times in the control loop can be identified for the implementation on a digital signal processor, namely: the delay time due to the sampling of the control quantities; the one due to the calculation time of the DSP; and the one due to the sample-and-hold function of the PWM modulator. Their influence on the stability of the inner current control loop is discussed and two prediction methods for compensation, namely a linear prediction and the Smith prediction, are comparatively evaluated. The control performance and the effect of the delay times and the prediction methods are finally shown by simulation results and through and measurements on a 5kW prototype.
AB - The digital control of a three-phase, three switch buck-type rectifier system is analyzed in this paper. Three main sources of delay times in the control loop can be identified for the implementation on a digital signal processor, namely: the delay time due to the sampling of the control quantities; the one due to the calculation time of the DSP; and the one due to the sample-and-hold function of the PWM modulator. Their influence on the stability of the inner current control loop is discussed and two prediction methods for compensation, namely a linear prediction and the Smith prediction, are comparatively evaluated. The control performance and the effect of the delay times and the prediction methods are finally shown by simulation results and through and measurements on a 5kW prototype.
UR - http://www.scopus.com/inward/record.url?scp=33745877348&partnerID=8YFLogxK
U2 - 10.1109/IAS.2005.1518454
DO - 10.1109/IAS.2005.1518454
M3 - Conference contribution
AN - SCOPUS:33745877348
SN - 0780392086
SN - 9780780392083
T3 - Conference Record - IAS Annual Meeting (IEEE Industry Applications Society)
SP - 923
EP - 927
BT - Conference Record of the 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
T2 - 2005 IEEE Industry Applications Conference, 40th IAS Annual Meeting
Y2 - 2 October 2005 through 6 October 2005
ER -