A 12/8 double-stator switched reluctance motor for washing machine application

Asgar, M.; Afjei, E.; Behbahani, Amir H.; Siadatan, Alireza

doi:10.1109/pedstc.2015.7093268

Cited by 18 publications

(3 citation statements)

References 15 publications

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“…This kind of solutions is commonly addressed in literature such as direct drive (DD) (Filicori et al, 1993;Pugi et al, 2017;Wallace and Taylor, 1991). The direct drive has been adopted to simplify the construction of widespread consumer products such as for instance the washing machines (Asgar et al, 2015), where it has been introduced for drastically improving performances and reliability. The application of DD technologies represents an opportunity to ease the construction process (Kassakian and Jahns, 2013), according to what observed in washing machines or motorized wheel for electric vehicles.…”

Section: Systematic Design Of a New Gearboxmentioning

confidence: 99%

Systematic design of a new gearbox for concrete mixers

Fiorineschi

Papini

Pugi

et al. 2020

JEDT

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Purpose The purpose of this study is to identify an innovative solution for the power transmission gearbox of concrete mixers, according to the specifications provided by the company. Design/methodology/approach A tailored systematic design approach (inspired to the German systematic framework) has been adopted to comprehensively gather the company specifications and perform in-depth design space explorations. Subsequently, an iterative embodiment design approach has been followed to identify the size of the components for the preferred concept, by using acknowledged mechanical design procedures and finite element analysis tools. Findings An innovative cycloidal gearbox has been developed, by merging the kinematics underpinning the classical cycloidal drives and the Wolfrom planetary gearbox. The resulting concept provides high reduction rates with a very high overload capacity. Research limitations/implications The main limitation of the studies is the absence of in-depth evaluations usually performed in the detail design phase. However, this limitation is a direct consequence of the company specifications, which only asked to find a preferred concept and to perform preliminary evaluations. Accordingly, the subsequent design optimization are intended to be performed by the company’s staff. Originality/value The present paper shows an original design approach, opportunely tailored to the design of innovative gearboxes. It can be conveniently adapted and reused by designers involved in similar tasks. Moreover, the designed cycloidal gearbox paves the way for important innovations in the field of concrete mixers, allowing to design more robust and compact devices.

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Section: Systematic Design Of a New Gearboxmentioning

confidence: 99%

Systematic design of a new gearbox for concrete mixers

Fiorineschi

Papini

Pugi

et al. 2020

JEDT

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show abstract

“…Consequently, the PCVM exhibits high efficiency across a wide speed range. A PCVM with high efficiency across a wide speed range can offer significant advantages in applications with wide speed ranges and multiple loads, such as washing machines and electric vehicles (EVs) [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Improving Efficiency of a Pole-Changing Vernier Machine Considering Residual Magnetic Flux Density

Lee,

Kwon,

Kwon

2023

Energies

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This paper presents the efficiency improvement of a pole-changing vernier machine (PCVM) by considering the residual magnetic flux density (Br) of low coercivity force (LCF) permanent magnets (PMs). The PCVM operates in two modes: vernier machine (VM) mode and permanent magnet synchronous machine (PMSM) mode, achieved through pole-changing. Pole-changing involves reversing the magnetic flux direction of LCF PM to alter the number of rotor pole pairs. By changing the number of rotor pole pairs, the PCVM operates as a VM mode at low speeds, providing high torque, and as a PMSM mode at high speeds, offering high efficiency. To achieve this, a combination of high coercivity force (HCF) PM and LCF PM is utilized in a single structure. The magnetic flux direction in the LCF PM is determined by Br, and the highest efficiency is achieved when Br reaches its maximum value |Brm|. This paper focuses on improving efficiency by obtaining Brm in VM mode and −Brm in PMSM mode through the design process. Additionally, finite element analysis (FEA) is employed to compare the performance of the improved model, which considers Br, with that of the conventional model, designed without considering Br. The improved model achieves higher Br values in each mode compared to the conventional model, resulting in increased torque density. Consequently, this leads to improved efficiency.

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“…Switched Reluctance Motor (SRM) has the advantages of rugged construction, low cost high starting torque, wide speed range and inherent fault-tolerance [1][2][3] , which have been used in many fields such as household appliances, electric vehicles and industrial drives [4][5][6][7][8] . The current chopping control (CCC) method for speed regulation in the low speed range are usually adopted, and the current value of each phase winding must be obtained [9] , so the current sensor must be employed in each phase [10] . Usually, the number of current sensors depends on the number of phases.…”

Section: Introductionmentioning

confidence: 99%

Phase Current Reconstruction With Dual-Sensor for Switched Reluctance Motor Drive System

Cheng

Wang

et al. 2021

IEEE Access

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Due to the rugged construction, high starting torque, wide speed range, inherent faulttolerance and high operating efficiency, switched reluctance motors (SRMs) have been used in many fields such as household appliances, electric vehicles and industrial drives. At low and medium speeds, the current chopping control (CCC) are usually used for SRMs. The current sensors must be connected in series with each phase winding for detecting the phase current, and the number of sensors is usually equal to the number of motor phases. In order to reduce the number of current sensors and the cost of the drive system, this paper propose a general phase current reconstruction method for SRM drive system with two current sensors. Firstly, the excitation, freewheeling and demagnetization circuits of the asymmetric half-bridge power converter are separated into two different paths. The sensors placement method, winding connection method and calculation formula of each phase current are introduced in detail. Then the influence of the turn-off angles on the overlap interval of each phase current is analyzed, and the proposed reconstruction method is further extended to multi-phase SRM. This method can simplify the current decoupling process and is easy to implement without changing the asymmetric half-bridge topology and operating states. Finally, the feasibility of the proposed phase current reconstruction algorithm is verified by simulation and experiment.

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A 12/8 double-stator switched reluctance motor for washing machine application

Cited by 18 publications

References 15 publications

Systematic design of a new gearbox for concrete mixers

Systematic design of a new gearbox for concrete mixers

Improving Efficiency of a Pole-Changing Vernier Machine Considering Residual Magnetic Flux Density

Phase Current Reconstruction With Dual-Sensor for Switched Reluctance Motor Drive System

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