TY - GEN
T1 - Dynamic performance of a Matrix converter fed speed sensorless DTC induction motor drive using adaptive speed observer.
AU - Satish, T.
AU - Mohapatra, K. K.
AU - Mohan, Ned
PY - 2009
Y1 - 2009
N2 - An effective control solution for speed sensorless vector control of induction motor fed by a cascaded neutral point clamped (NPC) inverter is proposed, where the novel SPWM pulse rotation control approach provides a simple way to implement vector control for induction motor when the cascaded NPC inverter is employed. The single carrier is used in the novel pulse control, instead of the multi-carriers, which makes the voltage modulation simpler and the hardware burden decrease. It is of great benefits to the cascaded NPC inverter, i.e., the output voltages and powers of all inverter modules, and two series-capacitor dc voltages of each inverter module are perfectly balanced, and a low switch frequency of all inverter modules provides a synthesized high frequency PWM phase voltage. A rotor flux-oriented vector control is combined with back EMFbased MRAS speed estimation, which results in a speed closedloop control. The voltage sensors together with the filters of changeable parameters ensure the precision of speed estimation for the whole frequency range. The proposed scheme is applied to control an 800kW 4160V induction motor fed by the 1MVA 6000V 17-level cascaded NPC inverter, where the controller mainly consists of one DSP and one CPLD. The experimental results verify the proposed scheme.
AB - An effective control solution for speed sensorless vector control of induction motor fed by a cascaded neutral point clamped (NPC) inverter is proposed, where the novel SPWM pulse rotation control approach provides a simple way to implement vector control for induction motor when the cascaded NPC inverter is employed. The single carrier is used in the novel pulse control, instead of the multi-carriers, which makes the voltage modulation simpler and the hardware burden decrease. It is of great benefits to the cascaded NPC inverter, i.e., the output voltages and powers of all inverter modules, and two series-capacitor dc voltages of each inverter module are perfectly balanced, and a low switch frequency of all inverter modules provides a synthesized high frequency PWM phase voltage. A rotor flux-oriented vector control is combined with back EMFbased MRAS speed estimation, which results in a speed closedloop control. The voltage sensors together with the filters of changeable parameters ensure the precision of speed estimation for the whole frequency range. The proposed scheme is applied to control an 800kW 4160V induction motor fed by the 1MVA 6000V 17-level cascaded NPC inverter, where the controller mainly consists of one DSP and one CPLD. The experimental results verify the proposed scheme.
KW - Cascaded multilevel inverters
KW - Neutral point clamped inverter
KW - Pulse rotation.
KW - Speed estimation
KW - Vector control
UR - http://www.scopus.com/inward/record.url?scp=65949104868&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=65949104868&partnerID=8YFLogxK
U2 - 10.1109/APEC.2009.4802945
DO - 10.1109/APEC.2009.4802945
M3 - Conference contribution
AN - SCOPUS:65949104868
SN - 9781424428120
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1984
EP - 1990
BT - 24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009
T2 - 24th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2009
Y2 - 15 February 2009 through 19 February 2009
ER -