PETS-a simulation tool for power electronics

Abstract

This paper describes PETS (Power Electronics Transient Simulator), a program for timedomain analysis of power electronic circuits. Methods implemented in PETS include standard techniques such as the modified nodal approach to forming system equations, and numerical integration with automatic time-step control, together with new techniques including a state determination algorithm, and representation of elements to maintain a constant system matrix. The simulator supports arbitrarily complex piecewise-linear models and smooth nonlinear models using a delay approximation. The methods implemented in PETS are illustrated using two examples: a quadratic buck converter, and a closed-loop powerfactor corrector.

Co-Simulation Interfacing Capabilities in Device-Level Power Electronic Circuit Simulation Tools: An Overview

“…: Interfacing capability should be improved. PETS : Power Electronics Transient Simulator (PETS), used for time-domain analysis, pro-R vides freedom to choose different degrees of complexity for piecewise-linear models [32]. : i) Supports continuously differentiable nonlinear models by applying a delay approximation method with Newton-Raphson iteration.…”

“…For formulating the Jacobian matrix other circuit simulators mostly utilize the standard techniques mentioned above, however, but they also use alternate methods. For example, PETS uses a novel algorithm to decide the accurate element states of its piecewise-linear networks as well as an efficient way to avoid its piecewise-linear and reactive elements from changing values with each time-step, thereby keeping the system matrix constant [32].…”

Computer-aided small-signal analysis based on impulse response of DC/DC switching power converters

“…The implementation setup is similar to the setups reported in [6], [10]: a front-end program manipulates the data and controls a general-purpose simulator which is used to generate time-domain responses. Two simulators are supported: PSpice and PETS [12]. The functions of updating the inputs and initial conditions in the circuit netlist file, launching the simulator, as well as performing all manipulations on the data collected from simulation have been written in Mathematica [13].…”