Page Contents

1 Understanding the Panel
2 Help Tab

Understanding the Panel

The startup panel is illustrated in Figure 6. It allows you to choose between three tabs: “Part 1,” “Part 2,” and “Part 3.” Each tab simulates a specific component of the UPS circuit as follows:

Part 1: Simulates the DC/AC Inverter when the input is reduced to an ideal DC source and the inverter is connected to the load.

Part 2: Simulates the AC/DC Rectifier.

Part 3: Simulates the DC/AC Inverter when the grid is off, using the battery as the input source and connecting the inverter to the load.

Figure 6: Startup panel

The different parts of the panel will be explained in the sections that follows.

Part 1: DC/AC Inverter with ideal DC source

Figure 7: Part 1 tab: DC/AC Inverter with ideal DC source

Component name	Component type	Component description

Component name	Component type	Component description
Part 1	Button	Select the Part 1 circuit (lights up green when selected)
ma_ref	Input	Selection of the modulation index
Control type	Switch	Select between Square Wave control and PWM control.
Square Wave	LED indicator	Red: Square Wave control is not selected Green: Square Wave control is selected
PWM	LED indicator	Red: PWM control is not selected Green: PWM control is selected
VLL1	Value Display	Line to line fundamental voltage on the output of the inverter

Table 2: Components description of the Part 1 tab

Part 2: AC/DC Rectifier

Component name	Component type	Component description

Component name	Component type	Component description
Part 2	Button	Select the Part 2 circuit (lights up green when selected)
V_AC	Input	Selection of the AC source voltage
V_dc_ref	Input	Selection of the DC reference for the rectifier
pf_ref	Input	Selection of the power factor reference for the rectifier
Vdc	Value Display	Line to line fundamental voltage on the output of the inverter
pf	Value Display	Measured Power factor
S(VA)	Value Display	Measured Real power in (VA)
P(W)	Value Display	Measured Active power in (W)
Q(Var)	Value Display	Measured Reactive power in (Var)
I_line1	Value Display	Fundamental grid current
V_grid mag	Value Display	Magnitude of the Grid voltage
V_grid phase	Value Display	Phase of the Grid voltage
I_Rect mag	Value Display	Magnitude of the current measured at the input of the rectifier
I_Rect phase	Value Display	Phase of of the current measured at the input of the rectifier
V_Rect mag	Value Display	Magnitude of the voltage measured at the input of the rectifier
V_Rect phase	Value Display	Phase of the voltage measured at the input of the rectifier

Table 3: Components description of the Part 2 tab

Part 3: DC/AC Inverter connected to battery source

Component name	Component type	Component description

Component name	Component type	Component description
Part 3	Button	Select the Part 3 circuit (lights up green when selected)
ma_ref	Input	Selection of the modulation index
VLL1	Value Display	Line to line fundamental voltage on the output of the inverter

Table 4: Components description of the Part 3 tab

Help Tab

When clicking on “Help tab”, the panel in figure 10 is displayed.
In this panel you can see an image of the complete simulated circuit as well as the circuit parameters.

Courseware

Lab 4 - Panels