Abstract
In this paper, an interior permanent magnet synchronous motor (IPMSM) with a stator core made of amorphous magnetic material (AMM) is presented. The IPMSM is driven by a voltage source three-phase inverter with classical pulse width modulation (PWM) control. The core losses under no-load condition are measured by experiment and compared to an equivalent IPMSM with a stator core made of NO steel. Under these conditions, the core losses are influenced by the stator, rotor and magnet shapes but also by the PWM carrier signal that implies a high frequency harmonic in the magnetic flux density. It is demonstrated that the AMM can reduce the core losses by about 56 %.
Highlights
Amorphous magnetic materials (AMM) offer low iron loss compared to conventional nonoriented (NO) silicon steel
An interior permanent magnet synchronous motor (IPMSM) with a stator core made of amorphous magnetic material (AMM) is presented
The core losses under no-load condition are measured by experiment and compared to an equivalent IPMSM with a stator core made of NO steel
Summary
Amorphous magnetic materials (AMM) offer low iron loss compared to conventional nonoriented (NO) silicon steel. The proposed SRM’s efficiency is competitive with a permanent magnet synchronous motor (PMSM) Another application in Ref. 4 shows that an induction motor with an AMM stator core offers a reduction of the core losses by almost 50 % at no-load and sinusoidal-supplied voltage. Compared to the no-current condition in Ref. 9, the inverter pulse width modulation (PWM) is responsible for high frequency harmonics in the magnetic flux density that increase the core losses.[11,12,13].
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