Abstract
In this paper, a novel Hybrid Excitation Flux Switching Machine (HE-FSM) with DC-field excitation coil (DC-FEC) wounded in radial direction is proposed. The design is able to generate high torque and power performance because of a few points of interest such as robust rotor structure, non-overlapping windings and reduction of flux cancellation in stator yoke. However, the design with FEC in radial direction required no space between upper FEC and outer stator of machine which is lead to flux loss to surrounding area and flux saturation in stator yoke. As a solution, iron flux bridges have been introduced on the stator core to produce high torque execution. By using JMAG Designer ver. 14, numerous configuration of iron flux bridges have been presented and overviewed. Then, performances of torque at numerous flux bridges is analysed and compared. A design with highest torque is chosen to investigate the other performances of the machine.
Highlights
Principal idea of Flux Switching Machine (FSM) has been introduced and reported in the year 1950. [1,2]
Permanent Magnet-FSM (PM-FSM) and Field Excitation- FSM (FE-FSM) only have a single main flux source for the motor to operate, one of the source comes from the permanent magnet (PM) itself and the other is the field excitation coil (FEC)
The new Hybrid Excitation- FSM (HE-FSM) is known as HE-FSM with radial direction since the FEC positioned is below and upper to each other in the stator
Summary
Principal idea of Flux Switching Machine (FSM) has been introduced and reported in the year 1950. [1,2]. PM-FSM and FE-FSM only have a single main flux source for the motor to operate, one of the source comes from the permanent magnet (PM) itself and the other is the field excitation coil (FEC). FE-FSM involve switching the flux vector with the armature coil winding, which relate to the rotor tooth position respectively. This type of machine has the potential of low cost and variable flux capabilities suitable for different performances [5]. A new design of HE-FSM with arrangement of DC FEC in radial direction is introduced to overcome high flux cancellation.
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