DSIM Technology
DSIM is a simulation software designed for power electronic systems. Its novel Discrete-State Event-Driven (DSED) simulation technique was specifically designed to address systems with large numbers of switches, high switching frequencies, and wide variations of time constants (for example, small time constants for switching transients in the scale of nanoseconds and large time constants for system simulations in the scale of seconds or minutes). DSIM simulations run at record-breaking speeds that are hundreds or thousands of times faster than existing commercial simulation tools. With DSIM, it is now possible to perform analysis and studies that are otherwise very time consuming or impossible to do before, greatly accelerating the development time and reducing the development cost. DSIM is ideally suited for applications in power system, power transmission, motor drive, industrial power supply, renewable energy source, aerospace and other applications.
Fast Simulation Speed
Discrete-State Event-Driven (DSED) simulation theory and method endows DSIM with astounding speed and accuracy for power electronics simulation.
Accurate Switching Transient Simulation
The innovative piecewise analytical transient (PAT) model enables DSIM to simulate switching transients. More than 100 physical models of IGBT and SiC MOSFET devices are built in DSIM, which can efficiently characterize the micro/nanosecond turn-on/turn-off process in large systems.
Rich Component Library
DSIM provides a rich component library of power switches, motors, photovoltaics, energy storage, and both continuous and discrete control blocks.
Piecewise Analytical Transient (PAT) model
The PAT model divides the switching transition into different time stages. In each stage the semiconductor and circuit mechanisms are decoupled, considering only the dominating components, and ignoring the others. Therefore, the divergence problem is resolved, the calculation speed is boosted, and all the device parameters can be obtained from the device datasheet.
Discrete-State Event-Driven(DSED) simulation theory
The DSED theory transforms the conventional “time-discretization” into a “state-discretization. The simulation is driven by events and has a variable-step feature naturally. The simulation speed is significantly increased with very high accuracy.
Automated semi-symbolic state-equation generation
This method models the different switching states in a unified form to generate the mathematical matrices of the state equations. Based on the switching function modeling of basic switching legs, an explicit function from switching states to state equation matrices is given, which reduces the computational cost of updating state equations without sacrificing accuracy.
