Variable Leakage Flux IPMSMs for Reduced Losses Over a Driving Cycle While Maintaining Suitable Attributes for High-Frequency Injection-Based Rotor Position Self-Sensing

Athavale, Apoorva; Fukushige, Takashi; Kato, Takashi; Yu, Chen-Yen; Lorenz, Robert D.

doi:10.1109/tia.2015.2464190

Cited by 26 publications

(11 citation statements)

References 13 publications

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“…Equation (19) states that at steady-state conditions, the carrier qaxis current has a maximum value if α i is zero, which is the same as in the square wave injection method. Fig.…”

Section: Specific Objective Function To Determine the Optimum Injectimentioning

confidence: 99%

“…the maximum angle in which the semi-impulse injection can be made. According to (19) and Fig. 4, the first harmonic of the q-axis carrier current takes the maximum value when α i is zero.…”

Section: Specific Objective Function To Determine the Optimum Injectimentioning

confidence: 99%

“…However, due to their higher injection frequencies, square‐wave methods require higher injected voltage amplitudes to achieve reasonable signal‐to‐noise ratio which causes extra acoustic noise and electromagnetic interference problems [2, 17, 18]. Furthermore, HF losses, including both core and copper losses, will be increased in the HF square‐wave injection method [7, 19]. These drawbacks might impose restrictions on sensorless drive applications, as for example in home appliances that are sensitive to audible noise [2].…”

Section: Introductionmentioning

confidence: 99%

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Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Alaei

Nejad

Gieras

et al. 2019

IET Power Electronics

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In saliency-based sensorless methods, the amplitude of the injected voltage cannot be reduced to levels below its specified value because of the reasonable signal required for the noise ratio. Increasing the injection signal amplitude increases not only the acoustic noise and high-frequency (HF) losses, but also the total harmonic distortion (THD) of the output voltage and current ripples. A new pulsating semi-impulse signal injection method based on the current sensing technique is proposed for the sensorless control of interior permanent magnet synchronous motors (IPMSMs). The proposed method aims to control the motor speed and reduce some problems due to the HF signal injection involving acoustic noise, HF losses and THD of the output voltage. Taking into account the premium injection angle, these problems are reduced significantly as compared to those in conventional square-wave methods. Hence, the proposed method increases the sensorless driver efficiency and its application scope. The effectiveness of the proposed method is then confirmed with computer simulation and experimental tests. Experimental comparisons at the same injection frequency and injection effective voltage show that the performance of the proposed method is beneficial. All experiments were performed on a IPMSM with V-shaped PMs which is used in a refrigerator compressor.

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“…Equation (19) states that at steady-state conditions, the carrier qaxis current has a maximum value if α i is zero, which is the same as in the square wave injection method. Fig.…”

Section: Specific Objective Function To Determine the Optimum Injectimentioning

confidence: 99%

Section: Specific Objective Function To Determine the Optimum Injectimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Alaei

Nejad

Gieras

et al. 2019

IET Power Electronics

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show abstract

“…The total flux includes the main flux and leakage flux. When the total flux of the excitation source remains unchanged, the leakage flux can be adjusted effectively theoretically by changing the leakage flux [10]- [12].…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of reverse salient permanent magnet synchronous motor based on controllable leakage flux

Liu

et al. 2021

Trans. Electr. Mach. Syst.

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In this paper, a controllable leakage flux reverse salient permanent magnet synchronous motor(CLF-RSPMSM) is designed, which has the advantages of wide speed range and low irreversible demagnetization risk. Firstly, the principle of controllable leakage flux and reverse saliency effect is introduced, and the design of the rotor flux barrier is emphatically discussed. Secondly, multiple design variables are stratified by the comprehensive sensitivity method, and the main variables are screened out. Then the relationship between the main variables and the optimization goal is discussed according to the response surface diagram. Thirdly, a sequential nonlinear programming algorithm(SNP) is used to optimize the three optimization objectives comprehensively. Finally, the electromagnetic performance of the proposed motor is compared with the initial IPM motor, the mechanical strength of the proposed rotor is analyzed, and the results verify the effectiveness of the design and optimization method of the proposed motor.

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“…The second is a highly integrated design scheme of the motor, drive, speed reducer, photoelectric encoder and manipulator body. 6 The scheme has the characteristics of high opticalmechanical integration, low cost and small volume. This type of products is mainly produced by UR, which 1 is more suitable for cost-sensitive applications such as dispensing and stacking.…”

Section: Introductionmentioning

confidence: 99%

Initial position detection for Selective Compliance Assembly Robot Arm manipulator joint based on an improved high-frequency injection method

Lü

Lin

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part I:

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Starting oscillation or slow response will occur if the initial position of the motor used in the Selective Compliance Assembly Robot Arm manipulator is not known. To obtain the initial position of the motor, an improved high-frequency injection method is proposed. First, a high-frequency rotating voltage signal is injected into the stationary coordinate system, and the initial position information is extracted by the heterodyne method. Second, an improved position tracking observer is proposed to estimate the rotor position. Taking the joint of a four-axis Selective Compliance Assembly Robot Arm as an object, a special position servo drive system is designed. The design principle, simulation analysis and experimental verification of the proposed method are presented, respectively. The results show that the initial position of the motor can be estimated by the proposed method, enabling high torque and fast start of the Selective Compliance Assembly Robot Arm manipulator.

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Variable Leakage Flux IPMSMs for Reduced Losses Over a Driving Cycle While Maintaining Suitable Attributes for High-Frequency Injection-Based Rotor Position Self-Sensing

Cited by 26 publications

References 13 publications

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Reduction of high‐frequency injection losses, acoustic noise and total harmonic distortion in IPMSM sensorless drives

Design and optimization of reverse salient permanent magnet synchronous motor based on controllable leakage flux

Initial position detection for Selective Compliance Assembly Robot Arm manipulator joint based on an improved high-frequency injection method

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