Environment Parameters
R2026bSet parameters that apply to all connected SPICE-compatible blocks
Environment Parameters block
To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.
Libraries:
Simscape /
Electrical /
Utilities
Description
The Environment Parameters block lets you set parameters that apply to all SPICE-compatible blocks in an electrical network:
Circuit temperature
Minimum conductance
If your model does not contain an Environment Parameters block, all blocks use the default values of these parameters. To override the default values, connect every network in the system to an Environment Parameters block.
Note
The simple semiconductor models in the Semiconductors sublibrary are not temperature dependent, so the Environment Parameters block only changes the minimum conductance parameter used by the exponential diode and bipolar transistor models.
Examples
SPICE Conversion of a MOSFET Subcircuit and Validation
Convert a metal-oxide-semiconductor field-effect transistor (MOSFET) subcircuit into an equivalent Simscape™ component and compare the Spice and Simscape plots for some standard MOSFET characteristics, namely Id versus Vgs, Id versus Vds, Qiss/ Gate charge, Qoss/ Output charge, and Breakdown voltage. The subcircuit2ssc function converts all the subcircuit components inside a SPICE netlist file into one or more equivalent Simscape files.
Specify Temperature on SPICE Diode Block with Environment Parameters Block
Use the Environment Parameters block to change the temperature of a SPICE Diode block in a simple circuit.
Troubleshoot a SPICE Conversion of an IGBT Subcircuit
Troubleshoot the conversion of a SPICE insulated gate bipolar transistor (IGBT) subcircuit and convert it into an equivalent Simscape™ component. The subcircuit2ssc function converts all the subcircuit components inside a SPICE netlist file into one or more equivalent Simscape files. However, in some cases, you must manually edit the original SPICE netlist.
Ports
Conserving
Parameters
Programmatic Use: Add Block
To add the block programmatically, use the add_block function with one of these library block paths as the source.
"ee_lib/Utilities/Environment Parameters"
Example: add_block("ee_lib/Utilities/Environment Parameters","myModel/myBlock",MakeNameUnique="on")
Extended Capabilities
Version History
Introduced in R2008a
