TY - GEN
T1 - A new dual series-connected Nine-Switch Converter topology for a twelve-phase induction machine wind energy system
AU - Dabour, Sherif M.
AU - Abdel-Khalik, Ayman S.
AU - Ahmed, Shehab
AU - Massoud, Ahmed M.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - This paper introduces a new transformerless converter topology for Multiphase-Based Wind Energy Conversion Systems (WECSs). In this topology, a twelve-phase induction generator is integrated to the grid using dual Nine-Switch Converters (NSCs) connected in series forming a high voltage cascaded dc-link. For this generator phase number, this topology reduces the total number of semiconductor devices in the machine side converter by 25% than conventional topologies, where four three-phase two-level voltage source converters are typically needed. Moreover, it offers a high ac-dc boosting capability, which facilities a transformerless system operation. The twelve-phase induction generator can be regarded as dual symmetrical six-phase windings with a spatial displacement of 30°. Therefore, each NSC controls each six-phase winding set. The dc-link midpoint balancing is achieved based on controlling the (x-y) current components of the two winding groups. The proposed topology and its control system are analyzed and simulated under different operating cases using MATLAB/SIMULINK.
AB - This paper introduces a new transformerless converter topology for Multiphase-Based Wind Energy Conversion Systems (WECSs). In this topology, a twelve-phase induction generator is integrated to the grid using dual Nine-Switch Converters (NSCs) connected in series forming a high voltage cascaded dc-link. For this generator phase number, this topology reduces the total number of semiconductor devices in the machine side converter by 25% than conventional topologies, where four three-phase two-level voltage source converters are typically needed. Moreover, it offers a high ac-dc boosting capability, which facilities a transformerless system operation. The twelve-phase induction generator can be regarded as dual symmetrical six-phase windings with a spatial displacement of 30°. Therefore, each NSC controls each six-phase winding set. The dc-link midpoint balancing is achieved based on controlling the (x-y) current components of the two winding groups. The proposed topology and its control system are analyzed and simulated under different operating cases using MATLAB/SIMULINK.
KW - multiphase machine
KW - induction machine
KW - nine-switch converter
KW - wind energy
KW - dc-link voltage balancing
U2 - 10.1109/CPE.2017.7915159
DO - 10.1109/CPE.2017.7915159
M3 - Conference contribution
AN - SCOPUS:85019541229
SN - 9781509049646
SP - 139
EP - 144
BT - 2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
PB - IEEE
T2 - 2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
Y2 - 4 April 2017 through 6 April 2017
ER -