The work includes stages such as designing, simulation, implementation and verification. The designing part involves using PROTEUS software for inverter and gate design. Next, simulation is conducted using MATLAB/Simulink software for controller design, download and implemented on the Arduino in the implementation stages. The verification stage involves the testing of the controller design using a hardware development to verify its correctness.
3.1 Block diagram of project
The Figure 3.1 shows the block diagram of the project that consists of 4 mains parts, they are the DC source, the three phase inverter, the three phase induction motor as a load and the controller.
Figure 3.1: Block diagram of the project error
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ref DC Source 3 phase inverter Adruino PID controller IM Gate Driver23 The first part of the block diagram is the DC source to give the power for the whole system. The second part is the three phase inverter. The general function of the inverter is to convert the DC voltage to the AC voltage. In this system, the three phase inverter will be used because the load is the three phase induction motor. The six switch of switching inverter will be used because the PWM will be fed from the controller.
In this motor control system, PID controller is used using the current source control technique. The controller will compare the motor current with the reference current. If there is an error, the controller will generate the pulse width modulation (PWM) to feed into the three phase inverter and rescale the output to power up the load. This process will continuous until the error approximately to zero to give high performance of the induction motor.
3.2 Flow chart of system
24 3.3 Flow chart of project
Figure 3.3: Flow chart of project development Yes No
Hardware part
Study the 3 phase inverter
Study the 3 phase IM
Upload to Adruino PID control design Derive mathematical modeling of 3 phase IM Study the structure of 3 phase
IM
Software part (MATLAB simulink) Write thesis Hardware setup Time response meet Observe performance of controller Start End
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