Development of HTS motor for industrial applications at KERI & DOOSAN

Abstract

This work is development of HTS motor at DOOSAN heavy industry with Korea Electrotechnology Research Institute in Korea. This project is sponsored by DAPAS program which is supported by Korean government. The final aim of the project is realization of HTS motor in the field of industry such as large driving pumps, fans and compressors for utility and industrial environments. In the first phase, 100 hp HTS motor was developed in order to implement the preliminary technology for the large applicable HTS motor. This machine is 4 pole, 1800 rpm superconducting synchronous motor, and it consists of HTS rotor and air-core stator. The HTS field windings are composed of the double-pancake coils wound with AMSC's stainless steel-reinforced Bi-2223 tape conductor. The cooling system is based on the heat transfer mechanism of the thermosyphon by using GM cryocooler as cooling source. The open circuit, no-load, and short circuit characteristics were obtained. Also, load tests in both motor mode driven by inverter and generator mode connected to resister load bank were conducted. All of the performance characteristics are well fitted to the designed ones. In the second phase, IMW HTS motor is under development for the purpose to fully represent the design and manufacturing issues. This machine is 2 pole, 3600 rpm, and all of the components is designed in detail. This machine will be assembled early next year. In the third phase, which will be started at 2007, 5 MW HTS motor will be developed for the industrial application. This paper represents design, construction, and experimental test results of the 100 hp HTS machine, in addition to represent design results and the preliminary model coil tests of 1 MW.