Low-Cost High-Torque-Density Dual-Stator Consequent-Pole Permanent Magnet Vernier Machine

Baloch, Noman; Kwon, Byung-il; Gao, Yuting

doi:10.1109/tmag.2018.2849082

Cited by 33 publications

(16 citation statements)

References 15 publications

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“…The output power of Con3 (special steel) is almost same to Con3 (general steel) due to their similar output torques. The core losses of the steel can be calculated by Steinmetz equation (10) [25] P c = P h + P e = K h fB n + K e f 2 B 2 (10) where P h P e , K h , K e , f , B are the hysteresis loss, eddy current loss, hysteresis loss coefficient, eddy current loss coefficient, frequency and flux density of the steel respectively. The efficiency and power factor are the two important characteristics for wide speed range operation.…”

Section: Proposed Control Strategy (Merits and Limitations)mentioning

confidence: 99%

Winding Switching and Turn Switching in Permanent Magnet Vernier Machines for Wide Speed Range Operation and High Efficiency

2019

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This paper proposes to turn to switch along with winding switching for high-efficiency of permanent magnet vernier machines (PMVM) during wide speed range operation for electric vehicles application. For winding switching, the three-phase winding of the machine is divided into two sets of windings, namely, winding set A, B, C and winding set X, Y, Z. For turn switching, the number of turns for one set of winding is changed. With the different number of turns for winding set X, Y, Z, the efficiency of the machine can be significantly improved. Initially, the basic electromagnetic characteristics, such as the flux linkage, back electromotive force (EMF), torque, and phase voltages of the machine are investigated using winding switching and turn switching. Then, the output power, torque-speed curve, core losses, efficiency, and power factor of the machine are analyzed in detail using a different number of turns. In addition, the transient effects of winding switching and turn switching have been analyzed. Finally, a control strategy is proposed which combines turn switching and winding switching to ensure high-efficiency of PMVMs during wide speed range operation. A PMVM is designed and driven in accordance with the proposed control strategy (PCS) to show the characteristics of PCS. The PMVM driven with PCS is compared to a recently presented PMVM. The recently presented PMVM is driven by a different control strategy and is analyzed with two different kinds of steel laminations that are general steel (50TW470) and special steel (20JHF1300). INDEX TERMS High efficiency, permanent magnet vernier machine, turn switching, wide speed range, winding switching.

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Section: Proposed Control Strategy (Merits and Limitations)mentioning

confidence: 99%

Winding Switching and Turn Switching in Permanent Magnet Vernier Machines for Wide Speed Range Operation and High Efficiency

2019

Self Cite

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“…It is the combination of a stator consequent-pole PM vernier machine and a rotor consequent-pole PM vernier machine. Its working principle is based on the flux modulation principle [30], [31]. Machine A satisfies equation ( 1) to generate the flux modulation effect:…”

Section: B Working Principlementioning

confidence: 99%

Low-Cost Dual-Mechanical-Port Dual-Excitation Machine for Washing Machine Application

2019

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This paper proposes a low-cost dual-mechanical-port dual-excitation machine for washing machine application. The proposed machine artfully combines two machines (vernier and permanent magnet synchronous machine (PMSM)). An outer vernier rotor is used for the low-speed washing operations, and an inner PMSM rotor is used for the high-speed drying operations of the washing machine. The proposed machine is compared with a similar recently presented machine to verify its cost-effectiveness. Comparison using the finite element analysis (FEA) shows that the ferrite magnets used in the proposed topology are more cost-effective. Furthermore, compared to the existing machine, the power factor of the proposed machine is high during the drying operation; hence, a lower rating inverter is sufficient to drive the machine, which further reduces the overall cost. In addition, the proposed machine provides similar efficiencies as the existing machine for both washing and drying operations.

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“…Extensive studies of PMVM in the last few years have produced a large amount of relevant literature [1–7]. Many new machine topologies have been proposed [4–21], including surface‐mounted PMs [4, 8], consequent‐pole [9], stator‐PM [2, 10], dual‐PM [11–12], dual‐stator [15–17], dual‐rotor [18], linear [19–20], and axial‐flux PMVM [21].…”

Section: Introductionmentioning

confidence: 99%

Study of Vernier permanent magnet machine with the dual rotor, toroidal winding and ferrite magnet on both sides of stator and rotor

Yang

Wang

Zhu

et al. 2020

IET Electric Power Applications

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A dual‐rotor permanent magnet Vernier machine (DRPMVM) with permanent magnets (PMs) on both sides of the rotor and stator is proposed and studied here. The configuration and working principle are provided, then the expression of coil‐side voltage is obtained based on the rotating harmonics of the air gap flux density. The effects of the rotor slot number on the amplitudes and phase differences of the voltage components are explored, and suitable combinations of the stator and rotor slot numbers are selected. The impact of the rotor and stator PMs on the voltage is also compared. Different coil connection methods are adopted for the DRPMVM with 12‐stator slot and 10‐rotor slot, and the back electromotive force, d‐ and q‐axes inductances, and torque‐speed characteristics are compared. Using the finite element method, the effect of the main parameters, including slot and yoke width on the average torque and torque ripple are then studied. Finally, a prototype machine is produced and tested to verify the conclusions.

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Low-Cost High-Torque-Density Dual-Stator Consequent-Pole Permanent Magnet Vernier Machine

Cited by 33 publications

References 15 publications

Winding Switching and Turn Switching in Permanent Magnet Vernier Machines for Wide Speed Range Operation and High Efficiency

Winding Switching and Turn Switching in Permanent Magnet Vernier Machines for Wide Speed Range Operation and High Efficiency

Low-Cost Dual-Mechanical-Port Dual-Excitation Machine for Washing Machine Application

Study of Vernier permanent magnet machine with the dual rotor, toroidal winding and ferrite magnet on both sides of stator and rotor

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