Optimal Design Strategy for Improved Operation of IPM BLDC Motors With Low-Resolution Hall Sensors

Seol, Hyun-Soo; Lim, Jonghun; Kang, Dong-Woo; Park, Joon Sung; Lee, Ju

doi:10.1109/tie.2017.2716908

Cited by 49 publications

(17 citation statements)

References 19 publications

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“…However, several reluctances require additional modification. Specifically, a multiplier of 2 is used in (18), and one of 2.35 is used in (19). This can be interpreted as an increase in the flux tube cross-sectional area towards one side due to the larger available area (e.g., the plates on the top and bottom sections of the contactor).…”

Section: ) Calculation Of the Reluctances Using A 1/4 Elliptical Arc Functionmentioning

confidence: 99%

“…Nevertheless, MEC models can be extremely useful in the initial design stages due to their simplicity, their reduced computational time, the transparency of the effects of different parameters, and their compatibility with optimization algorithms [17]. However, the application of the MEC method to actuator designs with complex geometry is impossible due to the complicated flux distribution, which cannot be captured by traditional MECs [18], [19]. Moreover, the strong magnetic fields, which lead to the magnetic saturation of the actuator's core, can increase the error of traditional MECs even further due to associated non-linear effects [20].…”

Section: Introductionmentioning

confidence: 99%

“…When the MC is in an open state, large working gaps, which are part of the main magnetic flux path, are a necessary design feature to ensure the reliable breaking of the current in a controlled circuit, decreasing the chances of arcs and contact welding. This flux leakage means that the analysis of MCs using the MEC method is substantially more complex than, for instance, that of interior permanent magnet (IPM) motors, which have been studied extensively in recent years [19], [25], [26].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Gabdullin

2019

IEEE Access

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This paper proposes a novel analytical method for the analysis of the dynamics of electrical machines. The method is applied to the analysis of complex permanent magnet (PM)-type magnetic contactors (MCs), which exhibit strong magnetic non-linearities and a high portion of stray and leakage magnetic fluxes. The latter means that the analysis of PM-type MCs using traditional magnetic equivalent circuit (MEC) methods is impossible, thus requiring computationally expensive and time-consuming finite element analysis (FEA). To overcome the limitations of traditional MECs, the magnetic field distribution in PM-type MC is studied in great detail, and a novel non-linear dynamic MEC (ND-MEC) method is proposed. The accuracy of the ND-MEC method is comparable to that of FEA which is achieved by accounting for non-linear effects and dynamic changes in the magnetic flux distribution using a novel stray path elliptical function. Furthermore, the applicability of the ND-MEC is extended to the time domain by combining it with the time difference method (TDM). The complete method, referred to as the non-linear transient path energy method (NT-PEM), combines the ND-MEC, TDM, and a path energy method for the calculation of electromagnetic forces. The validity of the NT-PEM is verified by comparing it with 3D FEA and experimental results obtained from a PM-type MC prototype. The NT-PEM is a fast and inexpensive alternative to FEA, which is particularly advantageous when many designs must be analyzed and optimized while reducing analysis costs. The proposed method can also be applied to the analysis of emerging technologies dealing with multiphysics coupled problems, as in the case of smart materials.INDEX TERMS Magnetic contactor, magnetic equivalent circuit (MEC), nonlinear dynamics, permanent magnets, stray flux modeling.

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Section: ) Calculation Of the Reluctances Using A 1/4 Elliptical Arc Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Gabdullin

2019

IEEE Access

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“…Brushless direct current (BLDC) motors have attracted considerable interest because of their high efficiency, silent operation, compact structure, and low maintenance [1][2][3]. Compared with three-phase BLDC motors, single-phase BLDC motors exhibit lower efficiency and a larger torque ripple; however, the latter are more cost-effective and are easier to mass manufacture [4].…”

Section: Introductionmentioning

confidence: 99%

Drive circuit‐based torque‐ripple suppression method for single‐phase BLDC fan motors to reduce acoustic noise

Cao

Huang

et al. 2019

IET Electric Power Applications

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This paper proposes a drive circuit for single-phase brushless direct current (BLDC) fan motors to reduce their acoustic noise. First, the torque ripple of a single-phase BLDC motor is analysed theoretically. Then, a drive circuit that is capable of regulating the DC-link voltage during commutation to weaken the negative effect of current lag is proposed to reduce the acoustic noise of single-phase BLDC fan motors. Furthermore, the characteristics of the proposed drive circuit are discussed theoretically using a deduced analytical model of the proposed drive circuit. Additionally, simulations based on the finite element method and experiments are performed. The torque ripple and acoustic noise generated by the conventional and proposed drive circuits are compared. The simulation results show that the torque ripple is reduced by 16.1% when the proposed drive circuit is used, and the experimental results illustrate that the acoustic noise generated by the second harmonic of the torque ripple is reduced by 7.3%. Ultimately, the effectiveness of the proposed drive circuit is verified.

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“…Consequently, performance degradation and even system damage can be taken place. Hence, research of fault detection, identification, and related compensation methods for Hall sensor defection or installation error have been brought into focus [19,[27][28][29][30][31][32]. In [27], authors analyse the performance degradation of the BLDC while Hall sensor faults happened.…”

Section: Introductionmentioning

confidence: 99%

Rapid estimation and compensation method of commutation error caused by Hall sensor installation error for BLDC motors

Yao

Zhao

et al. 2019

IET Electric Power Applications

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Hall sensors provide significant commutation signals for brushless DC (BLDC) motors. However, installation errors of Hall sensors are almost inevitable for BLDC motors, which can lead to commutation errors, further current ripples and torque ripples. Meanwhile, abnormal diode conducting in inactive phase can be aroused by large commutation errors at high speed. Therefore, the commutation errors make a negative influence on motor efficiency and degrade the performance of BLDC motors. Here, a simple and fast method to estimate the commutation error is proposed. Based on the analysis of the commutation process under commutation error, only the turn-off phase current at the commutation instant is required for the estimation of delayed commutation error, while only the time interval of the turn-off phase current decreasing to zero after commutation instant is needed when advanced commutation occurs. In order not to affect the dynamic performance of a BLDC motor, this study utilises a straightforward compensating method of commutation error. The experimental results represent that the proposed method is effective at different speeds, load torques, and under load-variation with good transient performance.

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Optimal Design Strategy for Improved Operation of IPM BLDC Motors With Low-Resolution Hall Sensors

Cited by 49 publications

References 19 publications

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Drive circuit‐based torque‐ripple suppression method for single‐phase BLDC fan motors to reduce acoustic noise

Rapid estimation and compensation method of commutation error caused by Hall sensor installation error for BLDC motors

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