Proceedings of the 2008 International Conference on Electrical Machines
Paper ID 934
978-1-4244-1736-0/08/$25.00 ©2008 IEEE
Brushless Doubly Fed Induction Machine in Wind
Generation for Water Pumping.
Pablo Camocardia,b, Pedro Battaiottoa, Ricardo Mantza,c
a Universidad Nacional de La Plata, LEICI, CC 91, 1900, La Plata, Argentina.
b Fundación YPF.
c Comisión de Investigaciones Científicas de la Provincia de Buenos Aires.
Abstract-This paper presents and analyzes the use of a
Brushless Doubly Fed Induction Generator (BDFIG) in an
autonomous wind conversion system for a water pumping
application. Because of no brushes and slip rings, the BDFIG is
suitable for autonomous systems, which often work in hard
conditions. The BDFIG mathematical model is reviewed and a
steady state analysis of the electrical torques and the power flow
on both stators is presented. The power flow control is
accomplished through the auxiliary stator changing the frequency
and voltage of its excitation. The system is controlled by means of
a torque loop following the turbine optimal torque. In addition, a
steady state analysis of the whole system operation points and the
power flow for different wind speed is accomplished, supported
by simulation results.
The Brushless Doubly Fed Induction Generator (BDFIG)
arises as an alternative to the Permanent Magnet and Wound
Rotor machines in wind energy conversion systems. Because
of the absence of slip rings and the possibility of reducing or
even eliminating the gearbox, its utilization in autonomous
wind turbine applications increases the system reliability and
reduces the maintenance and the operational costs, which are
importance in that kind of systems .
Additionally, the power flow on the principal stator of the
BDFIG could be driven from a fractionally power converter
connected on the auxiliary stator winding . This made the
BDFIG especially attractive for autonomous wind energy