If you have to change electrical connections or control modules, you can do so by modifying a
drive block. The following example uses
ac6_example to replace the
three-phase electric source by a battery. To modify a drive block:
Open the ac6_example by typing
ac6_example in the MATLAB® Command window. The drive is fed by a three-phase voltage
Simulate the model (in accelerator mode) and observe the results.
Break the link between the drive block and the Electric Drives library.
Right-click the block, and then select Library Link > Disable Link. .
Right-click the block again, and then select Library Link > Break Link
Right-click the drive block and select Look Under Mask.
Delete the three-phase electrical connections, the diode rectifier, and the braking chopper.
Add two Connection Port blocks from the Simscape > Electrical > Specialized Power Systems > Fundamental Blocks > Elements library, and then connect them to the positive and negative terminals of the Three-Phase Inverter block. Add a Simulink® Ground block and connect it to the output port Conv.
Save the model as
In the diagram, delete the three-phase source. Replace it with a 300Vdc/1Ah/NiMH Battery block and a 100 µF capacitor block connected in parallel.
Connect the Conv output of the block to a Terminator block. Remove the DC bus voltage blocks that are in the Demux block.
Add a Bus Selector block and then select the
Voltage (V) bus signal coming from the
m output of the Battery block.