Page Contents
Understanding the Panel
The main panel is shown in Figure 3
This panel will allow the user to control the whole circuit as well as to retrieve the desired values and observe the plotted signals.
At startup all switches are turned off.
The different parts of the panel will be explained in the sections that follows.
Circuit and parameters display
The complete simulated circuit is visible from the main panel, along with two LED indicators that show which source is powering the circuit. A green LED indicates that a specific power source is active. When the LED next to the AC source is illuminated, it means the AC source is powering the circuit and the battery is being charged. Conversely, when the LED next to the battery is on, it signifies that the AC source is off (e.g., during a power outage) and the battery is providing power to the load. Additionally, the battery capacity is displayed directly next to the battery icon for easy monitoring.
Multiple parameters are measured in the circuit and displayed as shown in Figure 5. An explanation of each parameter is provided in Table 3.
Parameter name | Description |
|---|---|
V_dc | DC source measured on the input of the Inverter |
pf | Power factor feedback from the rectifier |
S (VA) | Apparent power measured at the output of the inverter |
P (W) | Active power measured at the output of the inverter |
Q (Var) | Reactive power measured at the output of the inverter |
I_line1 | Fundamental grid current |
VLL1 | Fundamental voltage measured at the output of the inverter |
V_grid mag | Magnitude of the Grid voltage |
V_grid phase | Phase of the Grid voltage |
I_Rect mag | Magnitude of the current measured at the input of the rectifier |
I_Rect phase | Phase of of the current measured at the input of the rectifier |
V_Rect mag | Magnitude of the voltage measured at the input of the rectifier |
V_Rect phase | Phase of the voltage measured at the input of the rectifier |
Battery (%) | Battery capacity in percentage |
Table 3: Description of the displayed parameters
Inputs and control parameters
The switch shown in Figure 6 allows the user to simulate whether the AC source is active or if there is a power outage. When the switch is on, the AC source is activated.
The source and control parameters can be modified as shown in Figure 7. The user can adjust the AC source voltage, specify the DC voltage reference, and set the power factor reference of the rectifier. Additionally, the modulation index reference (ma_ref) of the inverter can be modified by the user.
Explanation of Data Scopes
To observe the results and output of the system, there are two display tabs that show multiple scopes. Below, you will find a description of each scope and the scope trigger, where applicable.
Display 1 Description
Scope | Content of scopes & Displayed waveforms |
|---|---|
Vabc_inv | Three phase voltage measured at the output of the inverter |
V_dc | DC voltage measured on the input of the Inverter |
Iabc_inv | Three phase current measured at the output of the inverter |
I_dc | DC current measured on the input of the Inverter |
Table 4: Content of scopes of Display 1 tab
Display 2 Description
This display is used to study the variation of the load current and the fundamental voltage during the switching phase between the two modes of UPS operation: when the AC source is providing power to the load and when the battery is supplying power to the load.
Scope | Content of scopes & Displayed waveforms |
|---|---|
I_Load | Three Phase load current |
VLL1 | Fundamental voltage measured at the output of the inverter |
Table 5: Content of scopes of Display 2 tab
Note 1: These scopes will only display results when the trigger switch is on and after switching between the modes of operation.
Note 2: An LED indicator next to the trigger shows if the data can be saved, as there is a waiting time between recordings before a new test can be recorded. When the LED is green, it means the scopes can record values.
The same results shown in these two scopes are recorded in an OPREC file that can be found as follows:
1- In the repertory of the HYPERSIM model click on Lab_5_hyp
2- Click on Recordings
3- Search for the OPREC file as follows
Note that every time a new simulation is done a new file is created with the date of the simulation.
4- Double click on the file and ScopeView will open you can now select the desired signals and plot them by pressing on play
Help Tab
When clicking on “Help tab”, the panel in Figure 14 is displayed.
In this panel you can see an image of the simulated circuit as well as the circuit parameters.
