|  During the past years, PLECS has become the tool of choice for high-speed simulations of power electronic systems in the MATLAB®/Simulink® environment. Now, PLECS is becoming even more versatile: In addition to the traditional PLECS Blockset, PLECS Standalone is available as a completely independent product — and even faster thanks to its own, dedicated solvers!
The two editions share the same intuitive, easy-to-use graphical user interface and the same system-oriented modeling approach. Analog and digital control structures can be modeled directly in PLECS using continuous and discrete signal processing blocks. The extremely flexible C-Script block allows custom functionality to be implemented directly in the C programming language. What's new in version 3.1 -
Steady-state and AC analysis
Powerful analysis tools that quickly determine the periodic operating point or the frequency response of a switching power circuit are now available both in the PLECS Blockset and in PLECS Standalone.
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Fourier spectrum and XY plot
For any periodic signal displayed in the PLECS scope the user can plot a Fourier spectrum at the push of a button. The analysis range is determined by the cursor positions in the scope window. The XY plot lets you display the relationship between the two signals over selected time range.
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Advanced machines models
The synchronous machines and the saturable induction machine offer a voltage-behind-reactance implementation that permits open-circuited stator windings. This makes it easy to interface with arbitrary external circuits such as rectifiers. Try out these and many other improvements of PLECS ... click here to go to PLEXIM site | 
