Inverter simulation in Simulink - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the inverter output frequency.

Simulink

output_frequency = [1];

Drag options to blanks, or click blank then click option'

A50

B60

C100

D120

Attempts:

3 left

💡 Hint

Common Mistakes

Using 50 Hz which is common in Europe but not in this simulation.

Using 100 or 120 which are too high for standard inverter output.

The standard inverter output frequency is set to 60 Hz for this simulation.

2fill in blank

medium

Complete the code to set the inverter DC input voltage.

Simulink

dc_voltage = [1];

Drag options to blanks, or click blank then click option'

A600

B400

C800

D220

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 220 or 400 which are lower than typical DC bus voltage.

Choosing 800 which is higher than the designed voltage.

The inverter DC input voltage is set to 600 volts for this simulation.

3fill in blank

hard

Fix the error in the PWM carrier frequency assignment.

Simulink

pwm_carrier_frequency = [1];

Drag options to blanks, or click blank then click option'

A5e3

B10e3

C15e3

D20e3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 5 kHz or 10 kHz which may cause audible noise.

Using 15 kHz which is less common than 20 kHz for this simulation.

The PWM carrier frequency should be 20 kHz for proper inverter switching.

4fill in blank

hard

Fill both blanks to create a dictionary mapping phase names to their voltages.

Simulink

phase_voltages = dict('A', [1], 'B', [2] );

Drag options to blanks, or click blank then click option'

A230

B220

C240

D210

Attempts:

3 left

💡 Hint

Common Mistakes

Using voltages that are too low or too high for typical phase voltages.

Assigning the same voltage to both phases which is less realistic.

Phase A voltage is 230 V and phase B voltage is 240 V in this inverter simulation.

5fill in blank

hard

Fill all three blanks to create a dictionary with phase names and their frequencies.

Simulink

phase_frequencies = dict('A', [1], 'B', [2], 'C', [3] );

Drag options to blanks, or click blank then click option'

A60

B59.9

C60.1

D61

Attempts:

3 left

💡 Hint

Common Mistakes

Using identical frequencies for all phases which is less realistic.

Using frequencies too far from 60 Hz causing simulation errors.

Phase A frequency is 61 Hz, phase B is 59.9 Hz, and phase C is 60.1 Hz to simulate slight frequency variations.