Analysis on Development and Application of Power Electric Device and Variable Frequency Technology

Abstract

Today, with rapid development of  science and technology in the 21^st century, China has also obtained great achievements drawing world’s attention regarding application and research in power electronics technology and variable frequency technology field. This paper has intensively studied and discussed development and application of power electronic device and variable frequency technology. This paper has first analyzed current application situation and trends of power electronic device in new energy and power system, rail transit and electric car, energy saving of industrial motor, consumption electronics, and national defense and war industry, then discussed development history of variable frequency technology, hazards brought by power electronic device and countermeasures, and finally demonstrated future development of power electronics technology and expected a broad development prospect of variable-frequency regulating speed technology in the future.