3.1. Understanding the Panels

When starting the demo, the panel in Figure 10 below appears first with the default settings.

Figure 10: Start-Up Panel - Inverter Mode Scenario

The panel is to be operated while following the three steps below:

Step 1: Select Scenario

In the upper left corner, the student can select the scenario using the three tabs:

• Inverter Mode
• LC Filter
• Rectifier Mode

 Step 2: Change Parameters / Switch Buttons

In the lower left corner, the student can change the control parameters and can switch the control buttons (to enable/disable their associated functions) in the following categories:

• Scope Parameters
• Protection
• DC Source
• Inverter Parameters
• AC Source

Table 3 below summarizes the control parameters, while Table 4 in this page is dedicated for the control buttons.  

 Step 3: Observe Waveforms

On the right side, the student can observe the waveforms displayed in four scopes.
Additionally, the power flow, the fundamental voltage and total harmonic distortion (THD) for inverter and load are displayed.
More details are given in Tables 5 and 6 in this page.

Table 3: Control Parameters

Table 4: Control Buttons and LED fuse status indicators

On scope localization, the indices used will be like those of matrix elements.
Hence, the scope located in the upper left corner (first row, first column) is denoted Scope₁₁, while the scope in the upper right corner (first row, second column) is Scope₁₂.
By the same token, the scope in the lower left corner is Scope₂₁ while the scope in the lower right corner is Scope₂₂.

Table 5: Content of Scopes and Displayed Waveforms

Three power displays are available in all the scenarios.
They are located below the scopes in the observation section.
From left to right they are identified as Display₁, Display₂ and Display₃.
They refer to the power measurements described in Section 2.7.
Additionally, two RMS voltage displays and two THD (related to inverter and load currents) displays, referred to as Display₄ to Display₇, are located below the scopes of Inverter mode and LC Filter scenarios.
Finally, an extra display, referred to as Display₈, is available for RMS filter current in the LC Filter scenario.

Table 6: Content of Displays

Consequently, the power dissipated in the LC Filter and the converter bridge can be deduced as shown in Table 7 below.

Table 7: Power Dissipated in LC Filter and Converter Bridge

3.2. First Scenario - Inverter Mode With Load: R, L, Back-EMF

When starting the demo, the panel corresponding to the Inverter Mode scenario opens by default as shown in Figure 10.
A concise scheme of the circuit is given below the tabs in the scenario selection area.
More details on the circuit, the control parameters, and buttons, as well as the observed waveforms are available when clicking the Help button.
The student can directly start exercises related to the Inverter Mode, available in Section 4.2.

3.3. Second Scenario - Adding LC Filter at the Inverter Output

When clicking on the “LC Filter” tab, the panel in Figure 11 below is displayed.

Figure 11: Second Panel - LC Filter Scenario

By clicking the Connect Filter button, the student activates the LC filtering and can start the exercises of Section 4.3 that are associated with this scenario. 

3.4. Third Scenario - Rectifier Mode

When clicking on the “Rectifier Mode” tab, the panel of Figure 12 below is displayed.

Figure 12: Third Panel - Rectifier Mode Scenario

Note that by clicking the PWM_Disable button, the DC Source is disconnected and the PWM generator is disabled.
Consequently, the first category of control parameters, namely, “DC Source and PWM parameters” is automatically disabled.
The same applies to the buttons SYNCHRONIZE and Apply Deadtime.