Switching LC Modelling - Constant Conductance Array, Arbitrary Topology

StarSim FPGA Circuit Solver uses the current mainstream switch modelling approach for FPGA-based simulation, the switch L/C modelling approach, i.e., when the switch is closed it is modelled as a very small inductor, and when the switch is open it is modelled as a very small capacitor. Under the backward Eulerian method, both inductance and capacitance are modelled as a conductor in parallel with an injected current source. The appropriate values of L and C are chosen so that Gs=dt/L=C/dt; i.e., the corresponding conductance Gs remains the same regardless of whether the switch is closed or open; only the injection current is calculated differently.

The advantage of switching constant conductance is that the corresponding conductance matrix of the circuit is constant regardless of how the switching state of the circuit changes. This feature greatly reduces the difficulty of real-time simulation of power electronic systems on FPGA.

At the same time, the switching LC modelling is only at the device level, and there is no restriction on how the power electronic devices themselves are combined; this makes StarSim FPGA Circuit Solver support arbitrary topologies. This makes StarSim FPGA Circuit Solver support arbitrary topologies, while some simulation software that derives mathematical models of power electronic systems based on known topologies is more difficult to achieve arbitrary topologies.

Measure the size of the system in terms of the number of critical components

Unlike some CPU-based simulation software that measures the size of a system based on the number of nodes in the system, StarSim FPGA Circuit Solver measures the size of a system based on the number of critical components contained in the circuit. Critical components are defined as inductors, capacitors, switches, and power supplies. For example, for a typical PV system such as the one below, where the transformer primary and secondary leakage inductors are present, as well as the excitation inductance, the transformer contains 9 inductors (9 critical components), and the entire system contains a total of 30 critical components.

Different Solver, same great computing power 

ModelingTech classifies Solver from 5000 to 9000 into different categories according to the maximum system supported by Solver, which provides different maximum system simulation capabilities, but different Solvers share the same simulation kernel and have the same powerful computational capabilities. The only difference is the maximum supported systems.

No compilation and support for major modelling software

For the convenience of users, StarSim FPGA Circuit Solver is compatible with mainstream power electronics simulation modelling software. Users can directly use their own models without additional model conversion work.
StarSim FPGA Circuit Solver is optimised in software design, no matter the initial loading of the model or the modification of the model, it does not need FPGA programming or compilation work, which can greatly improve the efficiency of the user when changing the model and modifying the parameters in the simulation test.