AC设备技术原理与发展方向,文中包括目前市场上主流AC设备厂商的产品介绍与特点.同时,简要分析了AC设备未来的发展方向.-Principle of AC equipment and the development direction of technology, the text included in the mainstream of the market on AC equipment vendors and the characteristics of the product introduction. At the same time, a brief analysis of the AC equipment of the future direction of development.