Investigating and Evaluating the Amount of Energy Saving Using Bidirectional Converters in the Drive of Industrial Motors

EHSAN SALEHI SHAHRAKI¹

1) 1. Department of Mechanical Engineering, Huazhong university of Science and Technology, Wuhan, China

Publication : 8th International Conference on Applied Researches in Science & Engineering (8carse.com)
Abstract :
Motor drives are a versatile technology that offers many advantages such as exceptional speed control and flexibility. Improving reliability and efficiency has become a huge research interest. In this direction and according to recent major developments in supercapacitor technology, the use of Bidirectional energy recovery converters has been introduced in various industrial applications. In this article, the regenerative braking of a three-phase induction motor under the control of a variable frequency drive is analyzed and part of the kinetic energy that can be recovered is calculated. The main role of this article is the energy saving estimation method that can be achieved using this energy recovery feature. In addition, the optimal duration of braking that maximizes the recovered energy will be investigated. Validation of the analysis presented in this article is done experimentally and the results are discussed.
Keywords : Bidirectional power flow; DC-DC power converters; Motor drives; Regenerative braking; Energy efficiency; Regenerative energy storage device; Supercapacitors.