Design of efficient BLDC motor for DC operated mixer-grinder

Gholase, Vaibhav; Fernandes, B. G.

doi:10.1109/icit.2015.7125179

Cited by 16 publications

(9 citation statements)

References 7 publications

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“…Carbon emissions coexist with the generation of AC by traditional dominant fossil fuels that seriously not only balancing out the earth environment but may also be a cause of the extinction of earth species. In DC distribution system with DC sources and DC appliances, 47% energy saving is observed by Gholase and Fernandes [1] and 22% system efficiency is improved by Anand and Fernandes [2]. In this paper system efficiency is improved by removing conversion stages and replacing induction motors with efficient BLDC motors.…”

Section: Introductionmentioning

confidence: 88%

“…given by Equation (1). P loses = P cables + P converter + P mechanical (1) P cables are the losses occurring in the distribution cables.…”

Section: Efficiency Improvement Of DC Systemmentioning

confidence: 99%

“…Various appliances like automatic door system, dish washer and mixer grinder running with DC motors are available in the market that need only the replacement of universal motor with BLDC motor and AC/DC converter with DC/DC. In[1] a DC operated BLDC mixer grinder is proposed with the efficiency of >80%. While the current universal motor grinder has an efficiency of 43% only.…”

mentioning

confidence: 99%

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DC Home Appliances for DC Distribution System

Kamran¹,

Bilal²,

Mudassar³

2017

Mehran Univ. res. j. eng. technol.

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This paper strengthens the idea of DC distribution system for DC microgrid consisting of a building of 50 apartments. Since the war of currents AC system has been dominant because of the paucity of research in the protection of the DC system. Now with the advance research in power electronics material and components, generation of electricity is inherently DC as by solar PV, fuel cell and thermoelectric generator that eliminates the rectification process. Transformers are replaced by the power electronics buck-boost converters. DC circuit breakers have solved the protection problems for both DC transmission and distribution system. In this paper 308V DC microgrid is proposed and home appliances (DC internal) are modified to operate on 48V DC from DC distribution line. Instead of using universal and induction motors in rotary appliances, BLDC (Brushless DC) motors are proposed that are highly efficient with minimum electro-mechanical and no commutation losses. Proposed DC system reduces the power conversion stages, hence diminishes the associated power losses and standby losses that boost the overall system efficiency. So in view of all this a conventional AC system can be replaced by a DC system that has many advantages by cost as well as by performance.

show abstract

Section: Introductionmentioning

confidence: 88%

“…given by Equation (1). P loses = P cables + P converter + P mechanical (1) P cables are the losses occurring in the distribution cables.…”

Section: Efficiency Improvement Of DC Systemmentioning

confidence: 99%

mentioning

confidence: 99%

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DC Home Appliances for DC Distribution System

Kamran¹,

Bilal²,

Mudassar³

2017

Mehran Univ. res. j. eng. technol.

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“…Few research works have investigated for blender machine applications [11][12][13][14][15][16]. Moreover, previous studies focused only on improving the motor performance such as its efficiency and torque density, regardless of actual control performance with pulsating load variation from the grinding materials.…”

Section: Introductionmentioning

confidence: 99%

Variable speed reference control of a high‐speed BLDC motor for a blender machine

Bae

Lukman

Ahn

et al. 2020

IET Electric Power Applications

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This study presents the design of a 2‐pole high‐speed BLDC motor for kitchen blenders and its control method with the aim to reduce the speed ripple that decreases the grinding performance in the high‐speed region. In blender machines, the high pulsating load caused by the blending materials such as ice cubes acting on the grinding blade, create significant speed ripple in the constant power region. Because current and torque are limited to protect the drive, the actual motor torque cannot overcome the pulsated load if the speed reference is maintained. Therefore, the speed fluctuates, and the grinding performance is lowered. In the proposed variable speed reference control scheme, the speed command is continuously modified to overcome the maximum pulsating torque requirement which results in lower speed ripple. To achieve this, if the load torque suddenly increases, the current value is then set based on the maximum load and speed reference value is temporarily lowered. If then the load torque becomes lower than the actual torque, the previously set speed reference value is reused. The design result and grinding performance of the proposed control method are verified by simulations and experiments. Hard white beans are used for actual performance testing.

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“…By using the open slot, it is not possible to achieve a compact and consistent winding layout, but it has high values of the slot fill factor, particularly if pressure is applied to the coils before assembling. The research conducted by Gholase and Fernandes [14] proposed a low-cost ferrite magnet-based BLDC motor as an efficient alternative. The buried magnet type rotor is preferably designed for such high-speed applications.…”

Section: Introductionmentioning

confidence: 99%

Modelling of torque and speed characterisation of double stator slotted rotor brushless DC motor

Othman

Zuki

Ahmad

et al. 2017

IET Electric Power Applications

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This study discusses the modelling of torque and speed characterisation of the double stator slotted rotor brushless DC motor (DSSR-BLDC). Most double stators have a surface mount rotor structure. The problem with this structure is that it has a large air gap, expensive permanent magnet, and cannot operate at high speed. In addition to flux leakage when this type of rotor structure is used. To overcome this problem, the DSSR-BLDC has been introduced. The usage of the DSSR-BLDC is to minimise the flux leakage, thus increasing the flux linkage. This will increase the torque production for the DSSR-BLDC. The aim of this research is to model the torque and speed characterisation of the DSSR-BLDC. This model uses the permeance analysis method and finite element method. The maximum torque and speed can be determined using both methods. The analyses of the electromagnetic torque, output power, and efficiency for various voltages are also presented. The simulation and measurement result show a good agreement with each other. The highest measurement value of the electromagnetic torque is 11 N m at 100 rpm. In conclusion, this study reveals that the modelling of the torque and speed characterisation of the DSSR-BLDC is suitable for portable applications.

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Design of efficient BLDC motor for DC operated mixer-grinder

Cited by 16 publications

References 7 publications

DC Home Appliances for DC Distribution System

DC Home Appliances for DC Distribution System

Variable speed reference control of a high‐speed BLDC motor for a blender machine

Modelling of torque and speed characterisation of double stator slotted rotor brushless DC motor

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