Low-noise external rotor BLDC motor for fan applications

Lelkes, András; Krotsch, Jens; Doncker, Rik W. De

doi:10.1109/ias.2002.1043812

Cited by 25 publications

(11 citation statements)

References 1 publication

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“…50 SWM), twelve-step square-wave nodulation (SWM) possesses less voltage harmonics than six-step SWM [15][16]. Recently, the use of twelve-step SWM in the fix-speed BDCM sensorless control [16][17] and the use of the twelve-step SWPWM in a variable-speed BDCM sensorless control are increasing [18].…”

Section: °1mentioning

confidence: 97%

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BDCM sensorless control for twelve-step square-wave PWM

Chen

Huang

Tsai

2009

2009 International Conference on Power Electronics and Drive Systems (PEDS)

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After studying the development of BDCM sensorless control with six-step square-wave PWM (SWPWM) and six-step back-EMF detecting scheme (BEDS), the BDCM sensorless control with twelve-step SWPWM and twelve-step BEDS had been proposed and implemented in this paper. The proposed twelve-step BEDS generates the twelve commutation instants from six back-EMF zero-crossings during each cycle where the six-step BEDS generates the six commutation instants from six back-EMF zerocrossings. Since the analysis of six-step BEDS is helpful to develop the twelve-step BEDS, this paper studies the six-step SWPWM and six-step BEDS first and explains why some specific six-step SWPWM type is always used in the six-step BDCM sensorless control. Then, we obtain the specific twelve-step SWPWM types and develop the proposed twelve-step BEDS. From the simulated and experimental results, BDCM sensorless control with twelve-step SWPWM shows less current harmonics than that with six-step SWPWM.

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Section: °1mentioning

confidence: 97%

“…Recently, the use of twelve-step SWM in the fix-speed BDCM sensorless control [16][17] and the use of the twelve-step SWPWM in a variable-speed BDCM sensorless control are increasing [18].…”

Section: °1mentioning

confidence: 99%

BDCM sensorless control for twelve-step square-wave PWM

Chen

Huang

Tsai

2009

2009 International Conference on Power Electronics and Drive Systems (PEDS)

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“…As such, the proposed motor can easily be placed in the drum due to its smaller size. Since the motor has an outer rotor, it provides advantages such as high torque and less noise [11], due to the increased rotor diameter. The only disadvantage of ID-BLDC motors is difficulty in cooling since it is inside the stator.…”

Section: Id_bldc Motormentioning

confidence: 99%

Design and Analysis of In-Drum Outer Rotor BLDC Motor for Eddy Current Separator

Fenercioğlu

Kurt

2017

Hittite J. Sci. Eng.

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E CS is a machine that provides recycling via separation of nonferrous metals by means of the eddy current effect. It separates copper, aluminum, brass, silver and similar valuable metals from wastes. The most important component of ECS that affects separation performance is magnetic drum. Higher rates of rotation and the multipolarity of the magnetic drum results in greater magnitudes of eddy currents in the metal that will be separated according to Faraday principles. In this case, the separation efficiency increases, while making the separation of smaller sized particles possible [1]. In General ECS, the drum is driven by a coupled motor. This motor rotates the drum directly by coupling or with a belt and pulley mechanism. In this case, reaching higher speeds is difficult due to loss in transfer organs and the balance effect. ECS machine and working principle scheme are given in Fig.1. This study proposes the design of an outer rotor BLDC motor to be installed in the drum to increase the ECS performance and to separate metals with small particle sizes. A BLDC motor consists of a stator with

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“…Owing to the permanent-magnetic rotor field, brushless DC motors (BDCMs) possess higher efficiency than the popular induction motors. Therefore more and more BDCMs are used in various high-efficiency variable-speed applications, such as fan motors [1,2], compressor motors [3,4], vehicle motor [5][6][7] and home applications [8].…”

Section: Introductionmentioning

confidence: 99%

Design of buck‐type current source inverter fed brushless DC motor drive and its application to position sensorless control with square‐wave current

Chen¹,

Huang²

2013

IET Electric Power Applications

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Owing to the widely used brushless DC motors (BDCMs) in high-efficiency applications, many position sensorless control methods based on voltage source inverters had been developed in the literature. Recently, current source inverters (CSIs) are receiving more and more attention because of their inherent short-circuit protection characteristics. But no position sensorless control for buck-type CSI with square-wave current had been found in the literature. In this study, the buck-type CSI-fed BDCM drive is designed and its application to the square-current position sensorless control is first proposed. The provided simulation and experimental results verify the effectiveness of the proposed CSI-based position sensorless control.

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Low-noise external rotor BLDC motor for fan applications

Cited by 25 publications

References 1 publication

BDCM sensorless control for twelve-step square-wave PWM

BDCM sensorless control for twelve-step square-wave PWM

Design and Analysis of In-Drum Outer Rotor BLDC Motor for Eddy Current Separator

Design of buck‐type current source inverter fed brushless DC motor drive and its application to position sensorless control with square‐wave current

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