CAREER: Computer Aided Analysis and Design of Power Electronic Systems

Maksimovic 该项目的目标是开发用于电力电子系统的计算机辅助分析、建模、综合和设计的数值技术，并将开发的工具集成到电力领域课程中。 在该项目的第一阶段，数值技术和模拟工具开发的分段光滑系统。 分段平滑（PWS）系统建模的一般方法，包括全方位的建模选项：从理想化的分段线性（PWL）模型，适合快速瞬态仿真在许多开关周期，详细的非线性模型的准确预测的波形在一个开关周期。 因此，开发的PWS仿真器能够执行完整的仿真任务，并帮助分析和设计各种电力电子应用，包括电力系统和公用事业接口，电机驱动器，可再生能源系统和开关电源。 PWS模拟器是基于新的数值技术，包括：PWL，PWS和光滑的非线性元件的统一表示，以获得一个恒定的系统矩阵，有效的迭代非线性数值连续方法，和PWS状态确定算法，以消除收敛问题快速切换过渡。 第二阶段的工作集中于PWS仿真器的应用和扩展：（1）开关功率变换器的全面的计算机辅助稳态分析，包括寻找周期稳态解、跟踪参数范围内的稳态特性和跟踪参数空间中的操作模式边界的通用、有效和鲁棒的算法;（2）电力电子系统的自动小信号和大信号动态建模;（3）高级CAD工具的框架，如综合、容差分析和设计优化工具。 所开发的技术在软件中实现，适用于电力电子和电力系统的研究，开发和教育。 这些工具被集成到两个本科电源领域的课程-能源转换讲座课程和一个新的，动手电力电子实验室。 开发了一套交互式WEB页面，将联合收割机在线仿真工具与支持实验和课程材料结合起来。

ECS-9703449 Maksimovic The objective of this project is to develop numerical techniques for computer aided analysis, modeling, syntheses and design of power electronic systems, and to integrate the developed tools in the power-area curriculum. In the first phase of the project, numerical techniques and a simulation tool are developed for piecewise-smooth systems. Piecewise-smooth (PWS) system modeling is proposed as the general approach that includes full range of modeling options: from idealized piecewise-linear (PWL) models suitable for fast transient simulation over many switching cycles, to detailed nonlinear models for accurate predictions of waveforms within a switching cycle. As a result, the developed PWS simulator is able to perform a complete range of simulation tasks and to aid analysis and design of a wide range of power electronic applications including power system and utility interfaces, motor drives, renewable energy systems and switching power supplies. The PWS simulator is based on new numerical techniques including: unified representation of PWL, PWS and smooth nonlinear elements to obtain a constant system matrix, efficient iteration over nonlinearity using numerical continuation methods, and a PWS state determination algorithm to eliminate convergence problems around fast switching transitions. The second phase of the project concentrates on applications and extensions of the PWS .simulator: (1) comprehensive computer-aided steady-state analysis of switching power converters, including general, efficient and robust algorithms for finding periodic steady-state solution, tracing steady-state characteristics over a range of parameters, and tracing operating-mode boundaries in the parameter space; (2) automated small-signal and large-signal dynamic modeling of power electronic systems; (3) a framework for higher-level CAD tools such as synthesis, tolerance analysis and design optimization tools. The developed techniques are implemented in software suitable for use in power electronics and power systems research, development and education. The tools are integrated into two undergraduate power-area courses - an Energy Conversion lecture course and a new, hands-on Power Electronics laboratory. A set of interactive WEB pages is developed to combine on-line simulation tools with supporting laboratory and course materials.