Modeling and Analysis of a Novel Variable-Speed Cage Induction Generator

Steady-state characteristis of 3-phase cage induction generators in TSCAOI configuration

“…The detailed parameters of this induction machine are given in the Appendix. The windings of the machine were configured in the TSCAOI winding arrangement proposed in [8]. The variations of the generated voltage V with respect to the rotor speed at different resistive loads and different excitation voltage were investigated.…”

“…Based on the derivation of the dynamic model proposed in [8], the stator and rotor equations are referred to the stator reference frame using the following transformation, so as to eliminate the essential sinusoidal coupling between the stator and rotor circuits with the rotor position. (1)…”

“…In these investigations, based on different circuit connections, passive circuit elements were extensively employed to reduce phase imbalance and provide reactive or excitation power. As an alternative, a new TSCAOI phase winding connection for 3-phase cage induction machines has been proposed in [7] and [8] to generate single-phase electricity at constant frequency under variable rotor speeds. The TASCOI connection allows for electricity generation with decoupled excitation and power windings, making control simple in contrast to other reported techniques.…”

Steady state analysis of a novel single phase induction generator for renewable energy conversion

“…Electricity generation using single phase induction machines of the power ratings above 3kW is less popular due to its disadvantages of heavy weight, high unit cost, bigger size and less availability [6], [7] phase operation of three phase induction machines is preferred since they can overcome the above disadvantages. Among the introduced topologies of single phase electricity generation using three phase induction machine, Madawala et al [8] recently presented a topology that has better control of output voltage and frequency. In this configuration, two of the three windings are connected in series to form the output terminals to which the variable load impedance and a fixed excitation capacitor are connected in parallel.…”

Transient analysis of a single-phase variable speed cage induction generator with active excitation control

“…Currently, the most commonly used topology for single-phase generation using a three-phase induction machine is to use the 'C-2C connection' [12]. Recently, Madawala et al [13,14] presented a novel topology for the variable speed cage induction generator to better control the voltage and frequency at the output. That technique uses one of the three windings of the machine for the excitation and remaining two windings connected in series for the single phase power winding.…”