Application and Control of Wavelet Modulated Power Electronic converters

在各种工业系统和过程中，利用电力电子转换器(PECs)进行电能转换和控制已成为必不可少的阶段。任何PEC的操作都是通过产生信号来接通和关闭固态开关组来实现的，固态开关组是任何PEC的主要组件。用于操作和控制PECS的开关方法(称为调制技术)已经被开发出来，其中包括脉宽调制(PWM)、空间矢量调制(SVM)和滞环带电流控制(HBCC)。尽管PWM、支持向量机、HBCC和其他技术能够在各种应用中运行PECS并适应不同的控制器，但它们的输出幅度和对非线性负载的敏感度都有所降低。最近，基于小波函数的一种新的调制技术被开发出来，用于操作单相和三相PECS。这种新技术被称为小波调制(WM)技术，它已显示出非凡的能力：i)改善输出质量(减少的谐波分量)，ii)增加所需输出分量的幅度，iii)最大限度地将能量从输入侧转移到输出侧，iv)简化实现(不需要载波信号和预定义的开关模式)，以及v)提高PECS的整体效率。本研究项目旨在开发和测试基于WM、PWM、支持向量机和HBCC技术的新型单相和三相PECS控制器系列。建议的控制器系列将使用相波函数来设计，这些函数能够准确、响应和简化地处理具有高度失真和非线性(类似于PECS中的电流和电压)的信号。基于相控阵的控制器的开发将提供单相和三相AC-DC和DC-AC PECS的操作和控制，以满足高性能和高效率的行业标准以及可行的实施要求。这些功能可以成为提高可再生能源系统、电源、微电网、高性能电机驱动器、存储系统、电动和混合动力汽车指挥和控制以及其他工业应用性能的关键工具。

Converting and controlling electric power using power electronic converters (PECs) have become essential stages in various industrial systems and processes. The operation of any PEC is achieved by generating signals to switch ON and OFF sets of solid-state switches, which are the main components of any PEC. Several switching methods (called modulation techniques) have been developed for operating and controlling PECs, among which are the pulse-width modulation (PWM), space vector modulation (SVM), and hysteresis-band current control (HBCC). Despite their abilities to operate PECs in various applications and adapt to different controllers, PWM, SVM, HBCC and other techniques suffered reduced magnitudes of their outputs and sensitivities to non-linear loads. As of late, a new modulation technique has been developed based on wavelet functions for operating single and three phase PECs. This new technique is called the wavelet modulation (WM) technique that has shown remarkable abilities to: i) improve the quality of outputs (reduced harmonic components), ii) increase magnitudes of desired output components, iii) maximize the energy transfer from the input side to the output side, iv) simplify the implementation (carrier signals and pre-defined switching patterns are not required), and v) improve the overall efficiency of PECs. This research project aims to develop and test a new family of controllers for single and three phase PECs operated by the WM, PWM, SVM, and HBCC techniques. The proposed family of controllers will be designed using the phaselet functions, which are capable of accurate, responsive, and simplified processing of signals with high distortions and non-linearities (similar to currents and voltages in PECs). The development of phaselet-based controllers will offer operating and controlling single and three phase AC-DC and DC-AC PECs to meet industry standards of high performance and efficiency, along with feasible implementation requirements. Such features can be key tools for improving performances of renewable energy systems, power supplies, micro grids, high performance motor drives, storage systems, electric and hybrid vehicles command and control, and other industrial applications.