THE past few decades have witnessed rapid development
in the use of alternative energy resources for electrical
power generation, which plays a key role in rural electrification
and industrialization programs. Power generation utilizing wind
energy, in particular, has received great attention in countries
all over the world [1]. In remote areas where a central grid
connection is not feasible, small-scale autonomous wind-energy
power-generation systems may be developed for supplying to
local consumers, reducing the connection cost, and avoiding the
transmission and distribution losses. The market potential of
wind-energy generators is considerable in view of the surging
power demands in China and Southeast Asia.
Self-excited induction generators (SEIGs) have been widely
used for wind energy power generation [2]. Although induction
machines are robust and inexpensive, they need capacitors
to provide excitation, and their satisfactory operation requires
an excitation controller. Overvoltage and overcurrent are
operational problems that need to be resolved under variablespeed
operation. The space-consuming capacitors are bulky and
expensive.
THE past few decades have witnessed rapid development
in the use of alternative energy resources for electrical
power generation, which plays a key role in rural electrification
and industrialization programs. Power generation utilizing wind
energy, in particular, has received great attention in countries
all over the world [1]. In remote areas where a central grid
connection is not feasible, small-scale autonomous wind-energy
power-generation systems may be developed for supplying to
local consumers, reducing the connection cost, and avoiding the
transmission and distribution losses. The market potential of
wind-energy generators is considerable in view of the surging
power demands in China and Southeast Asia.
Self-excited induction generators (SEIGs) have been widely
used for wind energy power generation [2]. Although induction
machines are robust and inexpensive, they need capacitors
to provide excitation, and their satisfactory operation requires
an excitation controller. Overvoltage and overcurrent are
operational problems that need to be resolved under variablespeed
operation. The space-consuming capacitors are bulky and
expensive.
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