Читать книгу Origin of Power Converters - Tsai-Fu Wu - Страница 26

A general question was brought up in last chapter on how to develop or derive PWM converters systematically. There are several approaches to developing converters based on switching cells, canonical converter cells, and switched capacitor/inductor cells, but they left a lot of questions behind without answers. In this book, our attempt is adopting from Charles Darwin's believe of evolution on which he published the book entitled On the Origin of Species. Similarly, we are intended to identify the origin of power converters, from which all of PWM power converters are evolved. The evolution mechanism and principle will be explored in later chapters. In this chapter, three approaches to creating the original converter, the buck converter, are discussed. Based on the original converter, we present three fundamental PWM converters that are used frequently in decoding and synthesizing converters. Their operational modes are discussed correspondingly to verify the evolved converters.