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This paper presents a technique to reduce electromagnetic torque ripple of an IPMSG with fractional-slot, concentrated-winding which is connected to a rectifier and a boost converter. Firstly, the generator was controlled using DC current control of the boost converter. The generator torque ripple with this conventional method was found as 29.7% of rated torque which is significant to cause generator...
Traditionally, current vector controlled interior permanent magnet synchronous motors use two independent current regulators for flux-weakening operation. A novel flux-weakening control scheme which uses a single current regulator has been proposed recently. This paper compares the flux-weakening performance of an interior permanent magnet synchronous motor while running with the control schemes based...
A new control approach for maximum torque per ampere control is proposed to improve the efficiency of fractional slot concentrated wound interior permanent magnet synchronous generators under light load conditions. The proposed method is compared with existing current reference trajectories (id zero, conventional maximum torque per ampere and total loss minimization) by experimentally measuring the...
Fractional slot-concentrated wound interior permanent magnet synchronous machines (FSCW- IPMSM) display high power density and high efficiency due to the short stator end windings and absence of rotor windings. The purpose of this paper is to analyze the efficiency of a 42-pole/54-slot FSCW-IPMSM under three commonly used current reference trajectory control algorithms namely zero direct axis current...
This paper proposes a method of condition assessment of generator stator winding insulation by simultaneously fitting time variation of Insulation Resistance (IR) and DC Ramped voltage plots. The insulation conductivity (σ), permittivity (ε) and response function (f(t)) was used for the assessment. A novel model which derived starting from the frequency domain dielectric response is proposed to model...
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