Model-Based Hysteresis Loss Assessment in PMSMs With Ferrite Magnets

Egorov, D. A.; Petrov, Ilya; Link, Joosep; Stern, Raivo; Pyrhönen, Juha

doi:10.1109/tie.2017.2714121

Cited by 14 publications

(13 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hysteresis behavior of ferrite magnets is simulated with a static History Dependent Hysteresis Model (HDHM) and the total hysteresis loss is calculated in the PMs of two different PMSM designs. The results in [7], [8] show that significant hysteresis loss is possible also in ferrite PMs under operation conditions that regularly move back and forth between the 2 nd and the 1 st quadrant of the BH-plane. The relatively small coercivity of ferrite PMs restricts the maximum possible armature reaction in the machine to avoid irreversible demagnetization.…”

mentioning

confidence: 94%

“…the methodology in [6] may overestimate the actual hysteresis loss in PM motors. Detailed investigations of the hysteresis loss in ferrite PMs are reported in [7], [8] via VSM measurements for four distinct grades, in total. The hysteresis behavior of ferrite magnets is simulated with a static History Dependent Hysteresis Model (HDHM) and the total hysteresis loss is calculated in the PMs of two different PMSM designs.…”

mentioning

confidence: 99%

“…Therefore, only a small volume of ferrite magnets may be subject to considerable hysteresis loss. The studies [7], [8] are limited to ferrite magnets.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Hysteresis Loss in NdFeB Permanent Magnets in a Permanent Magnet Synchronous Machine

Egorov

Petrov

Pyrhönen

et al. 2022

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

Most permanent-magnet (PM) loss studies consider only eddy current loss and neglect hysteresis. In this paper, the hysteresis behavior of two NdFeB PM grades with different magnetic properties is assessed when applied in a PMSM. Data from vibrating sample magnetometer measurements and hysteresis modelling are used as a base. In addition to the main magnetic phase the samples contained magnetic phases with reduced coercivity. Such phases may contribute to hysteresis losses in a PM material. A new model is introduced to simulate the hysteresis of rare-earth magnets of any geometric shape in the 2 nd and 1 st quadrants of the intrinsic BH-plane. The magnetic field strength distribution in the permanent magnet material of an electrical motor was analyzed by 2D finite-element method (FEM). The results are used as the input data for an analytical hysteresis model. The results indicate that the hysteresis loss resulting from the structural imperfections and geometry of the magnet may introduce a considerable loss in NdFeB PMs applied in rotating electrical machines.

show abstract

mentioning

confidence: 94%

mentioning

confidence: 99%

See 1 more Smart Citation

Hysteresis Loss in NdFeB Permanent Magnets in a Permanent Magnet Synchronous Machine

Egorov

Petrov

Pyrhönen

et al. 2022

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Since the permanent magnet materials in the electric vehicles have hysteresis losses in practice, it has been investigated in different applications and many results were acquired. Egorov et al [12] investigated the hysteresis loss of the permanent magnet using static history-dependent hysteresis model (HDHM) for PMSM with ferrite magnets of a rotor surface magnet. But in literature [13], a zero-sequence current hysteresis controller with space vector pulse-width modulation was presented to solve the system loss of the open-end winding permanent magnet synchronous motor, where the loss was caused by the limited maximum output power.…”

Section: Introductionmentioning

confidence: 99%

Echo State Network for Extended State Observer and Sliding Mode Control of Vehicle Drive Motor with Unknown Hysteresis Nonlinearity

Gao

Sun

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

An echo state network (ESN) for extended state observer (ESO) and sliding mode control (SMC) of permanent magnet synchronous motor (PMSM) in an electric vehicle system is investigated in this paper. For the PMSM model, most researches neglect the hysteresis loss and other nonlinear factors, which reduces the accuracy of the PMSM model. We present a modified PMSM model considering the hysteresis loss and then transform the new PMSM model to a canonical form to simplify the controller design. In order to deal with the hysteresis loss, an ESN is utilized to estimate the nonlinearity. Considering that some states cannot be directly obtained, an ESO with ESN is proposed to estimate unknown system states of the electric vehicle PMSM system. Afterwards, an SMC is adopted to control the closed-loop system based on the ESO with ESN, and a double hyperbolic function instead of the sign function is used to suppress the chattering of the SMC. e stabilities of the observer and the controller are all guaranteed by Lyapunov functions. Finally, simulations are presented to verify the validity of the echo state network for extended state observer and the neural network sliding mode control.

show abstract

“…However, there can be also significant hysteresis losses in the magnets, which can be larger than eddy current losses at low frequencies [2]. The hysteresis losses can be particularly important in machines with ferrite PMs [1,3,4] but less significant in machines with NdFeB PMs [5]. However, the methodology presented in this paper deals only with eddy current rotor losses.…”

Section: Introductionmentioning

confidence: 99%

Calculation of rotor losses in PM machines with retaining sleeves using transfer matrices

Anglada

Sharkh

Yuratich³

2018

IET Electric Power Applications

View full text Add to dashboard Cite

Accurate calculation of rotor losses in PM synchronous machines can be critical because these losses tend to be very small relative to others in the machine. Numerical methods, such as finite element analysis (FEA), can now provide accurate estimates of these losses, but they, especially 3D FEA, can be time consuming. Analytical methods therefore remain very useful as quick tools for estimating losses at the early design stages. This paper presents a new improved analytical method for the calculations of rotor eddy current losses in PM machines using a reformulation of the current sheet model into transfer matrices to solve Helmholtz's diffusion equation. Such methodology reduces the complexity of the problem significantly, particularly in machines with retaining sleeves, and simplifies the numerical evaluation of the resulting equations. A high speed PM machine with a retaining sleeve is presented as a case study. The analytical results are verified using FEA.

show abstract

Model-Based Hysteresis Loss Assessment in PMSMs With Ferrite Magnets

Cited by 14 publications

References 30 publications

Hysteresis Loss in NdFeB Permanent Magnets in a Permanent Magnet Synchronous Machine

Hysteresis Loss in NdFeB Permanent Magnets in a Permanent Magnet Synchronous Machine

Echo State Network for Extended State Observer and Sliding Mode Control of Vehicle Drive Motor with Unknown Hysteresis Nonlinearity

Calculation of rotor losses in PM machines with retaining sleeves using transfer matrices

Contact Info

Product

Resources

About