Improved Loss Minimization Control for IPMSM Using Equivalent Conversion Method

Hang, Jun; Wu, Han; Huang, Yourui; Wang, Hua

doi:10.1109/tpel.2020.3012018

Cited by 47 publications

(13 citation statements)

References 26 publications

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“…In this subsection, the conventional loss minimizing control (CLMC), in Ref. [30], is introduced to compare with the proposed algorithm. The optimal function of CLMC is given as follows.…”

Section: Conventional Loss Minimizing Controlmentioning

confidence: 99%

“…In this subsection, the conventional loss minimizing control (CLMC), in Ref. [30], is introduced to compare with the proposed algorithm. The optimal function of CLMC is given as follows.

{italicXT}_{e}^{2} + {italicYT}_{e} + Z = 0

X = - \frac{Δ L + R_{c} (b_{1}^{2} + b_{2}^{2}) Δ L}{3}

\begin{matrix} Y & = [(a_{1} b_{1} + a_{2} b_{2}) φ_{f} - (b_{1} c_{1} + b_{2} c_{2}) normalΔ L] \\ \cdot R_{c} (φ_{f} + normalΔ {Li}_{d}) \end{matrix}

\begin{matrix} Z & = [R_{s} i_{d} + R_{c} (a_{1}^{2} + b_{1}^{2}) i_{d} + R_{c} (a_{1} c_{1} + a_{2} c_{2})] \\ \cdot 3 {(φ_{f} + Δ {italicLi}_{d})}^{3} \end{matrix}

…”

Section: Control Systemmentioning

confidence: 99%

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High‐Efficiency Drive for IPMSM Considering Copper Loss and Iron Loss

Zhang

2021

IEEJ Transactions Elec Engng

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This paper presents a maximum efficiency algorithm (MEA), aiming at minimizing both copper loss and iron loss, for the interior permanent magnet synchronous motor (IPMSM) drive system. The equivalent circuit model is utilized to reach the optimal dq-current function with the optimal process. Besides, the current-voltage limitation algorithm for the MEA is proposed to solve the current limitation and the voltage limitation issues. The feasible region for the MEA is the intersection of the maximum current region and the maximum voltage region. With the IPMSM test platform, the validated experiments and efficiency tests were implemented to evaluate the proposed strategy. The experiments indicate the MEA operation is effective and feasible to improve the efficiency of the IPMSM. Besides, the feasible operating region of the IPMSM can be extended by the MEA. With the advantage of improving efficiency and extending the operating region, the MEA is suitable for applying the IPMSM drive system.

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“…In this subsection, the conventional loss minimizing control (CLMC), in Ref. [30], is introduced to compare with the proposed algorithm. The optimal function of CLMC is given as follows.…”

Section: Conventional Loss Minimizing Controlmentioning

confidence: 99%

“…In this subsection, the conventional loss minimizing control (CLMC), in Ref. [30], is introduced to compare with the proposed algorithm. The optimal function of CLMC is given as follows.

{italicXT}_{e}^{2} + {italicYT}_{e} + Z = 0

X = - \frac{Δ L + R_{c} (b_{1}^{2} + b_{2}^{2}) Δ L}{3}

\begin{matrix} Y & = [(a_{1} b_{1} + a_{2} b_{2}) φ_{f} - (b_{1} c_{1} + b_{2} c_{2}) normalΔ L] \\ \cdot R_{c} (φ_{f} + normalΔ {Li}_{d}) \end{matrix}

\begin{matrix} Z & = [R_{s} i_{d} + R_{c} (a_{1}^{2} + b_{1}^{2}) i_{d} + R_{c} (a_{1} c_{1} + a_{2} c_{2})] \\ \cdot 3 {(φ_{f} + Δ {italicLi}_{d})}^{3} \end{matrix}

…”

Section: Control Systemmentioning

confidence: 99%

High‐Efficiency Drive for IPMSM Considering Copper Loss and Iron Loss

Zhang

2021

IEEJ Transactions Elec Engng

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“…MTPA operation can also be achieved online by employing numerical solutions [26][27][28][29][30][31]. However, in real life experiments, these solutions may significantly suffer from online zero divisions issue during computations.…”

Section: Introductionmentioning

confidence: 99%

Analysis and simulation of efficiency optimized IPM drives in constant torque region with reduced computational burden

Koç¹,

Emiroğlu²,

Tamyürek³

2021

Turkish Journal of Electrical Engineering and Computer Sciences

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Moving from internal combustion engine based towards electric based transportation is crucial for wide societies as they facilitate the use of green energy technologies such as wind and solar. Interior mounted permanent magnet (IPM) machines, also known as salient brushless AC machines, are commonly employed in traction applications as they have superior features such as high efficiency operation, high torque and power densities. The efficiency optimization in IPM drives is achieved by obtaining and operating at accurate and unique current angle for a certain electromagnetic torque demand. In conventional drives, the optimum current angle is obtained by online utilization of iterative techniques. However, these techniques result in increased burden on the processor. In addition, accuracy of the generated current commands and hence the drive efficiency may significantly reduce if the number of iterations is not adequate. More importantly, online zero divisions issue may result in instability of the drive system at certain operating points in real life experiments. This paper proposes an efficiency optimized IPM drive with smooth output torque production addressing the aforementioned issues. The optimum operating points as a function of electromagnetic torque demand are computed offline by Newton-Raphson approximation technique in the paper and they are stored in the controller as look-up tables which are then employed to achieve optimum efficiency operation at a wide range. The superiority of the proposed drive is validated through extensive simulation of a 4.1 kW prototype IPM machine designed and manufactured for traction applications and the results are discussed in detail. The paper also presents detailed high efficiency control analysis of permanent magnet machines and hence it would be quite insightful for new researchers on the topic.

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“…[17] established a speed sensorless system based on the mathematical model considering iron loss, which improved speed estimation accuracy and load range at low speed. [18] improved the minimization loss control based on the iron loss model, which comprehensively reduces electrical loss of the IPMSM. The above research based on the PMSM mathematical model considering iron loss has achieved better performance [17]- [18].…”

Section: Introductionmentioning

confidence: 99%

“…[18] improved the minimization loss control based on the iron loss model, which comprehensively reduces electrical loss of the IPMSM. The above research based on the PMSM mathematical model considering iron loss has achieved better performance [17]- [18]. According to the iron loss model, the stator current includes two parts: stator magnetizing current and stator iron loss current.…”

Section: Introductionmentioning

confidence: 99%

A High Torque Estimation Accuracy Direct Torque Control of Permanent Magnet Synchronous Motor Based on a Novel Iron Loss Resistance Observer

Zhou¹,

Yang

Qiu

et al. 2021

IEEE Access

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This paper proposes a direct torque control (DTC) of permanent magnet synchronous motor (PMSM) with high torque estimation accuracy. Based on the PMSM mathematical model considering iron loss resistance, this paper analyzes that when using stator current to estimate torque, the accuracy will be affected by iron loss resistance. Using stator magnetizing current can solve the current deviation caused by iron loss resistance and improve torque estimation accuracy. Since the stator magnetizing current cannot be obtained directly, a novel iron loss resistance observer based on the model reference adaptive system (MRAS) is designed to estimate iron loss resistance and stator magnetizing current simultaneously. Popov's hyperstability theory guarantees the stability of the designed observer. Finally, a 1kW PMSM experimental platform is constructed to verify the proposed method. Both the simulation and experimental results show that the designed observer is stable, and using stator magnetizing current to estimate torque has better accuracy than stator current.

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Improved Loss Minimization Control for IPMSM Using Equivalent Conversion Method

Cited by 47 publications

References 26 publications

High‐Efficiency Drive for IPMSM Considering Copper Loss and Iron Loss

High‐Efficiency Drive for IPMSM Considering Copper Loss and Iron Loss

Analysis and simulation of efficiency optimized IPM drives in constant torque region with reduced computational burden

A High Torque Estimation Accuracy Direct Torque Control of Permanent Magnet Synchronous Motor Based on a Novel Iron Loss Resistance Observer

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