| Abstract |
PWM control schemes for a
three-phase current source inverter in the
photovoltaic power system interconnected
to the utility are investigated. As the
conventional PWM control scheme for
applying to the motor drive systems
cannot adjust the PV-array voltage, the
novel PWM control schemes are discussed
so as to carry out the MPPT control, that
is, the maximum power point tracking
control, for the PV-array. Three schemes
are proposed in this paper and the several
characteristics in those control schemes
are examined. As a result, by employing
the final proposed method, the MPPT
control can be easily realized and the ac
currents with lower distortions can be
outputted from the inverter into the
utility systems. |
