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How does the battery model affect the LTspice?
The battery model is comprised of a voltage source and a series resistance. However, I need the voltage source to change as the amount of charge in the battery changes (the differential of the charge = current out of the battery). In addition, the resistance needs to be a function of the current. Can someone tell me how to do this LTSpice?
How to model a NiMH cell using LTspice?
Here is a model for a NiMH cell using one of LTspice’s many great unique features (its nonlinear capacitor) to use a simple table to model the cell voltage verses charge characteristic. Internal resistance verses state of charge was also modeled using another table.
How to use cadence Spectre instead of LTspice?
Change the Quantity Plotted from “time” to “I (R1)” (assuming R1 is your behavioral resistor). Instead of LTspice, I use Cadence Spectre which uses VerilogA as a modelling language. VerilogA allows you to build almost anything the simulator can handle.
Can you build a veriloga model In LTspice?
VerilogA allows you to build almost anything the simulator can handle. However LTspice does not appear to support VerilogA. :- ( But what you could do is build a model from controlled sources (voltage controlled current source etc) and other elements which are available.
How are batteries modeled in PSpice to discharge?
As shown in Figure 2 and Figure 3, the batteries are modeled using the following functional blocks: · Capacitor representing the A-H capacity of the cell. · Discharge rate normalizer to determine the lost capacity at high discharge rates. · A circuit to discharge the A-H capacity of the cell.
How is the discharge behavior of a battery modeled?
This inefficiency is modeled as a VCVS in series with the output voltage of the battery state-of-charge node (the voltage on C_CellCapacity). This VCVS subtracts a given amount of capacity from the cell during discharge. The amount subtracted depends on the rate at which the cell is being discharged.
How is the discharge current and the cell resistance modeled?
To model the discharge current sense and the cell resistance, add a zero-valued voltage source in series with the output voltage. The cell resistance is modeled as a simple resistor for NICD or Lead-Acid cells and as a more complex variable resistance that depends on the cell’s state of charge for Alkaline cells.