WOLFRAM SYSTEM MODELER

PowerSupply

Model of an uninterruptible power supply that controls the supply of power to a load.

Diagram

Wolfram Language

In[1]:=
SystemModel["EducationExamples.ElectricalEngineering.UPS.PowerSupply"]
Out[1]:=

Information

This model shows how to use a model for both reliability analysis and dynamic behavior analysis.

System Architecture

The system will use the utility power when available. The utility power will be transmitted through the lines component. The charger detects loss of power and triggers the battery to provide power. When the battery provides power (DC), it will go through an inverter that will convert the power into AC. Finally, the load is connected to both the lines and inverter. 

Further Analysis

In the accompanying notebook, the switching behavior is studied. The reliability for the system is also computed.

In order to get the full experience of this example, you need a desktop Wolfram Language product. A free trial download is available at www.wolfram.com/mathematica/trial/

For the full example, open the accompanying notebook UPS.nb.

Parameters (3)

lowerVoltageLimit

Value: 6.8

Type: Voltage (V)

Description: Limit where the inverter can't supply full voltage

switchOffTime

Value: 5

Type: Time (s)

Description: Time instant when voltage is switched off

VMax

Value: 10

Type: Voltage (V)

Description: Battery cell voltage when fully charged

Connectors (1)

V

Type: RealOutput

Description: Battery cell voltage

Components (6)

utility

Type: Utility

Description: Electricity from utility

charger

Type: Charger

Description: Charges the battery

battery

Type: Battery

Description: Battery to keep the equipment going through power failure

inverter

Type: Inverter

Description: Converts from DC to AC

load

Type: Load

Description: An electrical load

lines

Type: TransmissionLines

Description: Electrical lines