Unbalance Response Analysis and Experimental Validation of an Ultra High Speed Motor-Generator for Microturbine Generators Considering Balancing

Sensors

Do-Kwan Hong¹  Dae-Suk Joo¹  Byung-Chul Woo¹  Dae-Hyun Koo¹ 

[1] Electric Motor Research Center, Korea Electrotechnology Research Institute, Boolmosangil 70, Changwon 641-120, Korea; E-Mails:

关键词: motor-generator for micro turbine;    unbalance response analysis;    orbit diagram;    critical speed;    with and without balancing;    rotor dynamics;   

DOI  :  10.3390/s140916117

来源: mdpi

【 摘 要 】

The objective of the present study was to deal with the rotordynamics of the rotor of an ultra-high speed PM type synchronous motor-generator for a 500 W rated micro gas turbine generator. This paper introduces dynamic analysis, and experiments on the motor-generator. The focus is placed on an analytical approach considering the mechanical dynamic problems. It is essential to deal with dynamic stability at ultra-high speeds. Unbalance response analysis is performed by calculating the unbalance with and without balancing using a balancing machine. Critical speed analysis is performed to determine the operating speed with sufficient separation margin. The unbalance response analysis is compared with the experimental results considering the balancing grade (ISO 1940-1) and predicted vibration displacement with and without balancing. Based on these results, a high-speed motor-generator was successfully developed.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.