Abstract

The establishment and dynamic control of a wind squirrel-cage induction generator (SIG) generating system are presented in this article. First, a three-phase wind SIG with suited excitation capacitor bank is established to yield stable three-phase generated voltages. Then the IG followed three-phase single-switch (3P1SW) continuous-current switch-mode rectifier (SMR) is developed to establish the boosted inverter DC-link voltage with suited magnitude. Well-regulated voltage against large line and load variations is achieved by the proposed adaptive feedforward controller and feedback controller. Meanwhile, good IG armature line supplying power quality is obtained to reduce the derate problem. Finally, a single-phase load inverter is designed and implemented. The proportional-resonant (PR) feedback controller is designed to yield AC 110V/60Hz voltage with good waveform quality under unknown and nonlinear loads. Successful microgrid-to-home (M2H) and microgrid-to-grid (M2G) operations are demonstrated experimentally.

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