Design, Analysis of the Location and Materials of Neodymium Magnets on the Torque and Power of In-Wheel External Rotor PMSM for Electric Vehicles

Łebkowski, Andrzej

doi:10.3390/en11092293

Cited by 16 publications

(15 citation statements)

References 55 publications

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“…The major objective of the proposed TMA is to compute the output of the real plant (process)for appropriate tracking of the model behavior, through an adaptation method. 23,24 As illustrated in Figure 5, the adaptation regulator output is directly passing to the process through the reference input. In the TMA approach, the adaptation method may be a simple gain or a classical regulator.…”

Section: Antiskid Torque Model Architecture For Stability Improvementmentioning

confidence: 99%

Robust control approach for stability and power quality improvement in electric car

Sahoo

Routray

Rout

2020

Int Trans Electr Energ Syst

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This paper proposes a combined electrical and mechanical control approach (ECA and MCA) fora multiconverter multimachine system (MCMM) basedon electric car (EC) operation. ECA is designed by using a fuzzy logic-based robust controller for improving the power quality (PQ) of the EC. The main role of the ECA is to compute the actual speed and angle of the machine by sensing the voltage and current component of the system. For PQ improvement, the ECA also facilitates active and reactive current components by sensing the appropriate machine torque, wheel torque, and dc-link voltage of the inverter. In addition to that, MCA is proposed for improving the stability of the EC by properly tracking the wheel torque during dynamic state conditions like slippery road conditions. To design MCA, the appropriate mathematical modeling of the car is proposed by considering the wheel and road contact, gearbox, the different force acting on the car, and mechanical coupling between the car components. A torque model approach is suggested to track the appropriate torque produced on the wheel. The performance of the proposed controller with the EC modeling is tested by using MATLAB/Simulink software under different road conditions. K E Y W O R D S electrical control approach (ECA), fuzzy logic controller (FLC), mechanical control approach, modeling of an electric car (EC), power quality (PQ), torque model approach (TMA) 1 | INTRODUCTION Recently, looking at the pollution, global warming, and the alertness regarding nonconventional energy conservation, power engineers are paying more attention to the design of zero-polluting ECs. Therefore, to improve the stability and performance of the ECs, the lesser weight EC modeling is gaining interest on an augmented pace. 1 Lots of EC modeling methods are proposed to facilitate a wider driving choice and smoother operation. 2 As shown in Figure 1, the design of EC modeling is divided into two sections like electric machines (EM) as a drive system and mechanical parts as gearbox, coupling, and EC wheel. The essential parameters like battery, central control structures (by combining electrical and mechanical system), tachometer, and voltage source inverters (VSIs) are used to design the complete EC. To drive the EC wheel, single EM is used for each of the wheels. 3 However, the complex structure, heavier weight, and increased cost 4 decrease the stability and performance. For achieving optimum performance, and looking at the simplicity and easier control action, DC machines are gaining interest in the traction of ECs. 5 However, the DC-machines need to be supplied with high starting torque. Therefore, for getting a robust/lighter model, high efficiency, and reduced cost EC,

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Section: Antiskid Torque Model Architecture For Stability Improvementmentioning

confidence: 99%

Robust control approach for stability and power quality improvement in electric car

Sahoo

Routray

Rout

2020

Int Trans Electr Energ Syst

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“…Considering the placements of the magnets in the rotor laminations for the studied models, the core slots are determined according to the slot pitch and number of slots per phase, by Equations (12,13) respectively, as given Table 3. In this table, the S parameter is the number of the slots on the rotor.…”

Section: Outer Rotor Designmentioning

confidence: 99%

“…Therefore, thermal analysis is required to determine the demagnetization at different temperatures as it was emphasized in Shu et al [12]. Especially, the maximum torque improved, sufficient mechanical power and more efficiency can be obtained by proper alignment of the magnets for an outer rotor PM Synchronous Motor (OR-PMSM) while keeping the minimum value of cogging torque and low torque ripples [13].…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Low Power Outer-Rotor Line-Start Permanent-Magnet Synchronous Motor for Ultra-Light Electric Vehicles

Tumbek

Kesler

2019

Energies

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Recently, while electric vehicles (EV) have substituted the fossil fuel vehicles, the design of the electrical motors with more efficient and less mechanical converters has become mandatory due to the weighting gears, mechanical differentials, and other cost-increasing parts. To overcome these problems, double electrical motors with low speed and high torque have been designed and used in the rear wheels of the EVs without any gearbox and mechanical differential. In this study, a novel outer rotor line-start hybrid synchronous motor is proposed as another solution. For this aim, four different hybrid rotor types, including magnets and rotor bars, have been designed and analyzed. Calculation and estimation of all parameters to design a motor are introduced. All of the analyses were carried out by Finite Elements Method (FEM). One of the analyzed motors, which is called Type-D was selected and implemented because of the best startup performance and better steady-state behavior under the rated load and overload. While holding this motor at synchronous speed under nominal load, in case of overloading, it remained in asynchronous mode, thus maintaining the sustainability of the system. Obtained results prove that the newly proposed outer rotor LSSM has the advantages of both synchronous motor and asynchronous motor. All of the experimental results validate the simulations well. The effects of the magnet alignments and dimensions on the performance of the motors are presented.

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“…In the electromagnetic and mechanical design we extensively use finite element method (FEM) and methods of production engineering, as in [8]- [11],which uses FEM to obtain input data for methods of robust engineering that generate material and geometrical data for physical prototyping. Our stator slots are narrower than in [10], and overhangs are shorter than in the difficult-to-manufacture [11].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Insulation Paper Damage in the Assembly of a Solid Slot Winding

Stefe¹,

Jenko

2020

IEEE Access

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Tight assembly of stator windings with no insulation paper damage is a manufacturing challenge. We evaluate different sets of parts according to the following parameters: magnet wire thickness, stator slot smoothness, length of the straight magnet wire after the slot end, and type and amount of insulation cap at the end of the slot. These parameters have discrete values with small differences between them. The damage criterion is the decrease of the insulation paper breakdown voltage after assembly/disassembly of parts, assembled in a small set of designed experiments. Parameter values, i.e., levels at individual experiments are set by an orthogonal experiment matrix. Repetition of each experiment provides statistical significance. Data analysis shows that the additive model alone is not sufficient due to the high correlation of the parameters' influences. We extend the model to include interparameter influences, which we model by adding a virtual parameter. The extended additive model generates parameter values that do not degrade the insulation paper breakdown voltage within the manufacturing process. These values are verified by repetitions of the control experiment. INDEX TERMS Analysis of variance, breakdown voltage, design for experiments, design for manufacture, dielectrics and electrical insulation, extended additive model, insulation paper damage, insulation testing, interparameter influence, in-wheel motor reliability, matrices, metal-insulator structures, orthogonal matrix experiments, permanent magnet motors, stators.

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Design, Analysis of the Location and Materials of Neodymium Magnets on the Torque and Power of In-Wheel External Rotor PMSM for Electric Vehicles

Cited by 16 publications

References 55 publications

Robust control approach for stability and power quality improvement in electric car

Robust control approach for stability and power quality improvement in electric car

Design and Implementation of a Low Power Outer-Rotor Line-Start Permanent-Magnet Synchronous Motor for Ultra-Light Electric Vehicles

Modeling of Insulation Paper Damage in the Assembly of a Solid Slot Winding

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