Development of an Energy Recycler Applied to Servo System

• Main Authors: Chun-HungChen, 陳俊宏
• Other Authors: Min-Fu Hsieh
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/08168339473550489601

碩士 === 國立成功大學 === 系統及船舶機電工程學系碩博士班 === 101 === This thesis proposes and develops an energy recycler applied to servo systems. The architecture is based on a back-to-back inverter. Two three-phase full-bridge inverters are employed to achieve bi-directional power flow. The conventional architecture uses resistors to consume the energy while motors are decelerating. In contrast, the developed grid connected system can restore the energy back to the mains. The control is realized by a microcontroller, which significantly improves the system reliability, reduces the circuit size and provides the flexibility for future expansion. In this study, the control circuit automatically monitors the DC bus voltage to decide the power flow direction when the servo motors accelerate or decelerate. The system protection mechanisms ensure the safe operation of power converters. The developed system is validated by both simulation and experiment.