2011 International Conference on Alternative Energy in Developing Countries and Emerging Economies
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0
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100
0
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80 100
Pd (W)
Pc (W)
0
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100
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250
0
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80 100
Pc (W)
SEIG Voltage (V)
(a)
(b)
Fig. 11. Characteristics of SEIG with IGC and consumer load. (a)
Dump load power (b) SEIG voltage.
IV. C
ONCLUSIONS
A prototype microcontroller-based SEIG-IGC the for
pico-hydro system has been developed and tested in a
laboratory under various operating conditions. The
controller consists of an uncontrolled rectifier with a
chopper and a self-commutating device such as a power
MOSFET in series with a dump load. The developed
scheme is tested with a three-phase SEIG system feeding
a single-phase load which is able to give a voltage
regulation of +/- 5%. It provides a fast control action that
is invariably within 2 cycles, which is good enough for a
stand-alone pico-hydro power generation system. The
proposed IGC can compensate for the varying consumer
loads. The transient waveforms under consumer load,
SEIG voltage and current are observed to be close to
sinusoidal. From the steady-state performance, it has
been concluded that the developed SEIG-IGC maintains
constant voltage at constant frequency, despite the
variation in consumer load. It also provides the flexibility
for changing the PID control parameters for providing a
duty cycle over a wide range. Hence, the same IGC can
be used for different ratings of machines, by changing the
PID control parameters in the program of the
microcontroller.
R
EFERENCES
[1] Murthy, S.S., Bhim Singh, Ashish Kulkarni,
Sivarajan, R., Sushma Gupta,
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novel picohydel system using self-excited induction
generator and electronic load controller”,
The Fifth
International Conference on Power Electronics and
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, 17-20 Nov. 2003, vol. 2 , pp. 842-
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[2] S. N. Mahato, S., P. Singh, and M. P. Sharma,
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-
excited single-phase induction generator using a
three-
phase machine”,
IEEE Transactions on Energy
Conversion
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[3] Sarsing Gaoy, S. S. Murthy, G. Bhuvaneswari, and
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controller-Based Electronic Load Controller for a
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rd
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[6] Brett Beauregard, Arduino PID Library [Online],
Available:
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