Fully Superconducting AC Generator with Brushless Excitation System
A study on efficient excitation system must be important to enhance the potential of superconducting AC generators further. After the first successful demonstration in a feasibility of magnetic-flux pump based brushless excitation system suitable for superconducting generators in 1983 , we have been constructing a testing machine able to generate actual electric power. Concurrently with it, we have been studying a fully superconducting generator with both of armature and field coils made of superconductors.
The paper presents the experimental machine system and its testing results about pumping-up performances of magnetic-flux pump and electrical characteristics when operated as fully superconducting brushless generator with the capacity of less than 20 kW.
KeywordsCritical Current Maximum Output Power Field Current Terminal Voltage Synchronous Generator
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