Noninvasive and Improved Torque and Efficiency Calculation Toward Current Advance Angle Determination for Maximum Efficiency Control of PMSM

Balamurali, Aiswarya; Guo, Feng; Kundu, Animesh; Dhulipati, Himavarsha; Kar, Narayan C.

doi:10.1109/tte.2019.2962333

Cited by 31 publications

(8 citation statements)

References 28 publications

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“…− For each current angle 𝛽, the d-and q-axis current components are calculated using (13). − The d-and q-axis flux linkages are updated using (16). − The d-and q-axis voltage components are updated using (17).…”

Section: The Proposed Online Efficiency Optimization Methodsmentioning

confidence: 99%

“…The fundamental copper loss of an IPMSM can be estimated by (6). The harmonics copper losses can be ignored as the employed switching frequency of inverter is 10kHz [16].…”

Section: Copper Lossesmentioning

confidence: 99%

“…First, the maximum torque per ampere (MTPA) is developed [12]- [15]. Then, the maximum efficiency per ampere (MEPA) is introduced [16]- [20].…”

Section: Introductionmentioning

confidence: 99%

“…Ni et al, Uddin and Rebeiro,and Yang et al in [18]- [20], the fundamental iron losses are considered to maximize the system efficiency. However, harmonic iron losses are not considered which affect motor efficiency, especially in the high-speed and light load regions [16]. Balamurali et al and Ni et al in [16]- [18], offline MEPA control methods are proposed.…”

Section: Introductionmentioning

confidence: 99%

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Online efficiency optimization of IPMSM for electric vehicles

Elsherbiny

Ahmed

Elwany

2021

IJPEDS

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<span>This paper presents an online efficiency optimization method for the interior permanent magnet synchronous motor (IPMSM) drive system in an electric vehicle (EV). The proposed method considers accurately the total system losses including fundamental copper and iron losses, harmonic copper and iron losses, magnet loss, and inverter losses. Therefore, it has the capability to always guarantee maximum efficiency control. A highly trusted machine model is built using finite element analysis (FEA). This model considers accurately the magnetic saturation, spatial harmonics, and iron loss effect. The overall system efficiency is estimated online based on the accurate determination of system loss, and then the optimum current angle is defined online for the maximum efficiency per ampere (MEPA) control. A series of results is conducted to show the effectiveness and fidelity of proposed method. The results show the superior performance of proposed method over the conventional offline efficiency optimization methods.</span>

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Section: The Proposed Online Efficiency Optimization Methodsmentioning

confidence: 99%

“…The fundamental copper loss of an IPMSM can be estimated by (6). The harmonics copper losses can be ignored as the employed switching frequency of inverter is 10kHz [16].…”

Section: Copper Lossesmentioning

confidence: 99%

“…First, the maximum torque per ampere (MTPA) is developed [12]- [15]. Then, the maximum efficiency per ampere (MEPA) is introduced [16]- [20].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Online efficiency optimization of IPMSM for electric vehicles

Elsherbiny

Ahmed

Elwany

2021

IJPEDS

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show abstract

“…However, a precise loss model was required (Balamurali et al, 2021). Balamurali et al proposed a current advance angle to achieve efficiency improvement, which required an efficiency model with experimental tests that were very complicated (Balamurali et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Maximum efficiency control and predictive-speed controller design for interior permanent magnet synchronous motor drive systems

Liu

Zhuang²

2022

Front.Electron.

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Improving the efficiency of home appliances is an important area of research these days, especially for global warming and climate change. To achieve this goal, in this paper, a new method to improve the maximum efficiency control of an interior permanent magnet synchronous motor (IPMSM) drive system, which includes an IPMSM and an inverter, is investigated. By suitably controlling the d-axis current, the IPMSM drive system can quickly reach its maximum efficiency. A steepest ascent method is used to obviously reduce the searching steps of the maximum efficiency tracking control for an IPMSM. According to experimental results, by using the traditional fixed step method, 14 steps are required to reach the maximum efficiency operating point. By using the proposed steepest ascent method, however, only 4 steps are needed to reach the maximum efficiency operating point. In addition, according to the experimental results, during the transient dynamics, the predictive controller obtains faster responses and 2% lower overshoot than the PI controller. Moreover, during adding external load, the predictive controller has only a 10 r/min speed drop and 0.1 s recover time; however, the PI controller has a 40 r/min speed drop and 0.3 s recover time. Experimental results can validate theoretical analysis. Several measured results show when compared to the fix-step searching method with a PI controller, the proposed methods provide quicker searching maximum efficiency ability, quicker and better dynamic transient responses, and lower speed drop when an external load is added.

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Quantitative Analysis on Efficiency Performance of Interior Permanent Magnet Synchronous Motor

Lixin,

Xiaoyuan,

Shuangshuang

et al. 2023

IEEJ Transactions Elec Engng

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This paper investigates the influence of the loss distribution and magnetic saturation on the efficiency performance, which includes the location of maximum efficiency point, the size of high‐efficiency region and the value of maximum efficiency, for an interior permanent magnet synchronous motor (IPMSM). The loss expressions considering magnetic saturation are first proposed and then the efficiency‐losses function model of the IPMSM is constructed. The efficiency performance of the motor is analyzed quantitatively. The general principle is summarized including adjusting the location of maximum efficiency point, expanding the size of high‐efficiency zone and improving the maximum value of efficiency from the perspective of loss distribution and magnetic saturation. Two IPMSMs with different magnetic circuit characteristics are designed to verify the correctness of the analytical method by finite‐element analysis (FEA). Finally, prototypes are manufactured for the experiment and measurement results are given for validations. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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Noninvasive and Improved Torque and Efficiency Calculation Toward Current Advance Angle Determination for Maximum Efficiency Control of PMSM

Cited by 31 publications

References 28 publications

Online efficiency optimization of IPMSM for electric vehicles

Online efficiency optimization of IPMSM for electric vehicles

Maximum efficiency control and predictive-speed controller design for interior permanent magnet synchronous motor drive systems

Quantitative Analysis on Efficiency Performance of Interior Permanent Magnet Synchronous Motor

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