Circuit models for multiphase coupled inductors are summarized, compared, and unified. Multiwinding magnetic structures classified into parallel-coupled series-coupled structures. For used inductors, the relationships between: 1) inductance-matrix models, 2) extended cantilever 3) magnetic-circuit 4) multiwinding transformer 5) gyrator-capacitor 6) inductance-dual examined discussed. These repr...

Brushless permanent magnet surface inset machines are interested in industrial applications due to their high efficiency and power density. Magnet segmentation is a common technique in order to mitigate cogging torque and electromagnetic torque components in these machines. An accurate computation of magnetic vector potential is necessary in order to compute cogging torque, electromagnetic torq...

The voltage biased SQUID Bootstrap Circuit (SBC) was recently demonstrated for direct readout of SQUID signals. The SBC combines currentand voltage-feedbacks in one circuit to suppress the preamplifier noise. It offers not only a good noise performance, but also wide tolerance of SQUID parameters. Using SBC gradiometer, the bio-magnetic signals were successfully measured. In this paper, we over...