TY - GEN
T1 - Comparison of dynamic responses of dual and single rotor wind turbines under transient conditions
AU - Farahani, Ehsan Mostery
AU - Hosseinzadeh, Nasser
AU - Ektesabi, Mehran Motamed
PY - 2010
Y1 - 2010
N2 - Recently a new technology of wind turbines has been introduced which is going to have a remarkable share in the market in the close future. This wind turbine has two set of blades. So it is more efficient for collecting energy from wind in comparison to a single rotor wind turbine. This paper investigates the dynamic behaviour of the dual and single rotor wind turbines under unbalance transient conditions. To reach to this stage the models of mechanical and electrical components which exist in PSCAD/MTDC library have been used and combined together according to the configuration of the single and dual rotor systems. Both wind turbines are actuated and monitored from three aspects. Firstly, a step change in wind speed is applied which leads to a change in mechanical torque. Secondly, voltage sag is considered at the generator terminal which causes electromagnetic torque shock. Third, the amount of energies which is released by the mechanical systems after network frequency drop, are compared with each other to evaluate which one can support the frequency better. In all calculations the stream tube effect has been entered to the simulations. Different variables of wind turbines are evaluated and the operations of the rotors are compared.
AB - Recently a new technology of wind turbines has been introduced which is going to have a remarkable share in the market in the close future. This wind turbine has two set of blades. So it is more efficient for collecting energy from wind in comparison to a single rotor wind turbine. This paper investigates the dynamic behaviour of the dual and single rotor wind turbines under unbalance transient conditions. To reach to this stage the models of mechanical and electrical components which exist in PSCAD/MTDC library have been used and combined together according to the configuration of the single and dual rotor systems. Both wind turbines are actuated and monitored from three aspects. Firstly, a step change in wind speed is applied which leads to a change in mechanical torque. Secondly, voltage sag is considered at the generator terminal which causes electromagnetic torque shock. Third, the amount of energies which is released by the mechanical systems after network frequency drop, are compared with each other to evaluate which one can support the frequency better. In all calculations the stream tube effect has been entered to the simulations. Different variables of wind turbines are evaluated and the operations of the rotors are compared.
KW - Dual rotor turbines
KW - Dynamics
KW - Rotor turbines
KW - Single
KW - Stream tube effect
KW - Wind turbines
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U2 - 10.1109/ICSET.2010.5684946
DO - 10.1109/ICSET.2010.5684946
M3 - Conference contribution
AN - SCOPUS:79851500507
SN - 9781424471935
T3 - 2010 IEEE International Conference on Sustainable Energy Technologies, ICSET 2010
BT - 2010 IEEE International Conference on Sustainable Energy Technologies, ICSET 2010
T2 - 2010 IEEE International Conference on Sustainable Energy Technologies, ICSET 2010
Y2 - 6 December 2010 through 9 December 2010
ER -