Characteristic Analysis of HTS Linear Synchronous Generators Designed With HTS Bulks and Tapes

Abstract

Two types of high temperature superconducting (HTS) linear synchronous generators (LSG) have been analyzed, which models developed have either an HTS bulk magnet array or an HTS tape coil as their secondary mover. The no-load induced voltage and output power characteristics versus the trapped flux density of the HTS bulk magnets, the HTS tape coils' excitation currents, the secondary mover speed and the air gap length have been obtained using the Finite-Element Analysis (FEA). The principal characteristics of the HTSLSG with the secondary made by the HTS materials have been identified. The HTSLSG model under sinusoidal driving mode has been simulated, and also the electromagnetic force on the HTS secondary. The characteristic analysis provides a base for practical development of an applicable HTSLSG.Index Terms-High temperature superconducting (HTS) bulks, HTS coils, HTS linear synchronous generator, sinusoidal driving mode, trapped flux.

A HTS linear generator with HTS coils as a wave energy converter

“…The higher induction and currentcarrying ability make the HTS coils to form a better exciter. The ability of power output of a HTS generator is far outweigh than the conventional generators [5,6]. There are two main modes, one is semi-superconductor (semi-SC) HTSLSG, and another is full-superconductor (full-SC) HTSLSG.…”

A HTS linear generator with HTS bulks as a wave energy converter

“…The magnetic field trapped by a HTS bulk is much larger than that of a permanent magnet (PM), which makes the HTS bulk the better exciter [5,6]. Based on operation of a HTS bulk, the HTSLSG acting as a DWEC could be designed in several modes.…”

“…The total magnetic reluctance of the magnetic circuit for each pole-pair of the HTS bulk magnets is given by [5] ( ) ( )…”

“…To properly configure the HTSLSG and to increase the efficiency of the DWEC, the conversion ratios of the HTSLSGs with the HTS bulks' primary are analyzed in this section. A HTSLSG DWEC simulation model with the HTS bulks' primary has been constructed in the Maxwell [5], as well as a PMLSG DWEC in the same structure and size. Parameters of the generator are presented in Table I.…”

Enabling High-Temperature Superconducting Technologies Toward Practical Applications

“…The UESTC group has developed a 1-kN levitated singlesided HTS linear synchronous motor (HTSLSM) commencing in 2007 [41]. The primary and secondary were composed of copper windings with tooth-slot structure and an YBCO bulk magnet array.…”