变频器的原理及在家电中的应用

变频器技术是现在工业生产中和家用电器中普遍使用的一种新技术，变频产业得到飞速发展，产品的产业化规模也日趋壮大。目前，中小型低压变频器已经非常普及和成熟，大功率的中压变频器也正在被人们关注和逐步使用。20世纪90年代以来，随着电力电子技术、微电子技术及大规模集成电路的发展，生产工艺的改进及功率半导体器件价格的降低，还有人们节能环保意识的加强，变频调速越来越被工业上所采用并且普及。变频器卓越的无级调速性能，显著的节电和环保作用都是企业技术改造和产品更新换代的理想调速装置所需要的。

Transducer Principles and Application in Appliances

Transducers （inverter） are an emerging technology widely used in both industrial production and domestic appliances. It has gained increasing popularity among industry which has spurred production and application to higher and higher levels.At present, the medium and small types of low voltage transducers have gained a high degree of popularity and maturity in practice. In fact, the medium voltage transducer with high-power is also currently being considered and gradually being interfaced with the existing systems. Since the 1990s, many factors have influenced the acceptance of transducers in both industry and consumer appliances. First, the development of power electronics, microelectronics technology and Large Scale Integratfon （LSI） laid the tech- nological ground work. Next, the improvement of production technology, and reduction of the price of the power semiconductor devices, coupled with the enhancement of peoplei-s awareness of energy and environmental protection has further increased the interest in inverters. More over, speed adjustment technology for electrical drives is gradually being adopted and popularized in the industrial sector, there by, making transducer development highly desirable. The superb variable speed performance of the transducer along with its remarkable energy efficiency and environmental sensitivity make it the ideal speed control device for technological enterprises that wishing to apply innovation to their product line.