TY - CONF T1 - Comparison of Halbach magnetised brushless machines having discrete magnet segments or single ring magnet JO - IEEE International Digest of Technical Papers on Magnetics Conference PY - 2002/01/01 AU - Zhu ZQ AU - Xia ZP AU - Howe D ED - DO - DOI: 10.1109/intmag.2002.1001362 PB - IEEE Y2 - 2025/01/03 ER -