University of South Wales Master of Sciences Thesis

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Standalone Hybrid Power Generation Syste

Fig.4.20 Shaft Torque (pu) 4.4. Three Phase Inverter Using Pulse Width Modulation (PWM)
Fig. 4.21 Three Phase Inverter Using Pulse Width Modulation (PWM) Model

As discussed in the chapter-2 that when the machine torque is positive it act as a motor but when the
torque is negative Machine act as a generator and from the figure below it can be seen that shaft
torque is negative.
Fig.4.20 Shaft Torque (pu)

4.4. Three Phase Inverter Using Pulse Width Modulation (PWM)
As the proposed hybrid generation system is consist of solar and wind turbine and we already
simulated the PV array and wind turbine model and also got the desired output hence know we have
to integrate the PV array and wind turbine. The output of the PV array is already converted to the AC
from DC with the help with the help of inverter and wind turbine used in the system produce AC
voltage instead of DC voltage so we need to use three phase inverter using Pulse width modulation to
integrate them to the micro-grid.
Fig. 4.21 Three Phase Inverter Using Pulse Width Modulation (PWM) Model

Standalone hybrid generation system for the remote area of Thar, Pakistan

4.4.1. Simulation Result
Fig. 4.22 Three Phase Inverter Vab and Vab_Load
4.5. Hybrid Generation System Model
In the hybrid generation system model solar and wind are integrated under HPW Subsystem and is
then connected to the load by breaker to open the circuit in case of any emergency.

Standalone hybrid generation system for the remote area of Thar, Pakistan

Fig.4.23-Hybrid Generation System Model

Figure below show the subsystem of HPW in detail, in this subsystem integration of the solar and
wind turbine is done.

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