scholarly journals A novel technique of dynamic speed control for buck boost converter fed BLDC motor drive

2018 ◽  
Vol 7 (2.21) ◽  
pp. 190
Author(s):  
K Sasikala ◽  
R Krishna Kumar
Keyword(s):  
Power Quality ◽  
Low Cost ◽  
Speed Control ◽  
Boost Converter ◽  
Voltage Source ◽  
Motor Drive ◽  
Prototype Model ◽  
Bldc Motor ◽  
Novel Technique ◽  
Switching Losses

This paper mainly impacts on a bridgeless buck boost converter fed Brush Less Direct Current (BLDC) motor drive with Power Factor Correction (PFC) which is low cost and well suitable for low power applications. The speed of the BLDC motor is controlled by adjusting the Voltage Source Inverter’s dc link voltage which is then employed along with a distinct voltage sensor. Thus the fundamental frequency switching of VSI operation becomes quite ease with BLDC motor’s electronic turn off which provides minimal switching losses. An acceptable performance is attained for speed control having power quality indicators within the allowable limits. To end with the suggested drive’s prototype model has been implemented to evaluate and confirm the suggested BLDC motor drive’s performance for various speed controls with enhanced AC main’s power quality. 

Power-Quality Improvement in PFC Bridgeless SEPIC-Fed BLDC Motor Drive

2013 ◽  
Vol 14 (3) ◽  
pp. 285-296 ◽  
Author(s):  
Bhim Singh ◽  
Vashist Bist
Keyword(s):  
Power Quality ◽  
Low Frequency ◽  
Speed Control ◽  
Current Mode ◽  
Voltage Source ◽  
Motor Drive ◽  
Bldc Motor ◽  
Switching Losses ◽  
Wide Range ◽  
International Power

Abstract This article presents a design of a power factor correction (PFC)-based brushless DC (BLDC) motor drive. The speed control of BLDC motor is achieved by controlling the DC link voltage of the voltage source inverter (VSI) feeding BLDC motor using a single voltage sensor. A front-end bridgeless single-ended primary inductance converter (SEPIC) is used for DC link voltage control and PFC operation. A bridgeless SEPIC is designed to operate in discontinuous inductor current mode (DICM) thus utilizing a simple control scheme of voltage follower. An electronic commutation of BLDC motor is used for VSI to operate in a low-frequency operation for reduced switching losses in the VSI. Moreover, a bridgeless topology offers less conduction losses due to absence of diode bridge rectifier for further increasing the efficiency. The proposed BLDC motor drive is designed to operate over a wide range of speed control with an improved power-quality at the AC mains under the recommended international power-quality standards such as IEC 61000–3-2.

An Improved Power Quality BIBRED Converter-Based VSI-Fed BLDC Motor Drive

2014 ◽  
Vol 15 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Bhim Singh ◽  
Vashist Bist
Keyword(s):  
Power Quality ◽  
Pulse Width Modulation ◽  
Supply Voltage ◽  
Speed Control ◽  
Voltage Source ◽  
Motor Drive ◽  
Bldc Motor ◽  
Brushless Dc ◽  
Switching Losses ◽  
Wide Range

Abstract This paper presents an IHQRR (integrated high-quality rectifier regulator) BIBRED (boost integrated buck rectifier energy storage DC-DC) converter-based VSI (voltage source inverter)-fed BLDC (brushless DC) motor drive. The speed control of BLDC motor is achieved by controlling the DC link voltage of the VSI using a single voltage sensor. This allows VSI to operate in fundamental frequency switching mode for electronic commutation of BLDC motor which reduces the switching losses due to high-frequency switching used in conventional approach of PWM (pulse width modulation)-based VSI-fed BLDC motor drive. A BIBRED converter is operated in a dual-DCM (discontinuous conduction mode) thus using a voltage follower approach for PFC (power factor correction) and DC link voltage control. The performance of the proposed drive is evaluated for improved power quality over a wide range of speed control and supply voltage variation for demonstrating the behavior of proposed drive. The power quality indices thus obtained are within the recommended limits by international PQ (power quality) standards such as IEC 61000-3-2.

Comparison between an Interleaved Boost Converter and CUK Converter Fed BLDC Motor

2015 ◽  
Vol 6 (3) ◽  
pp. 594
Author(s):  
V. Ramesh ◽  
Y. Kusuma Latha
Keyword(s):  
Control Strategies ◽  
Torque Ripple ◽  
Boost Converter ◽  
Voltage Source ◽  
Motor Drive ◽  
Voltage Source Converter ◽  
Bldc Motor ◽  
Cuk Converter ◽  
Interleaved Boost Converter ◽  
Permanent Magnet Brushless Dc

There is a great concern of torque ripple and power quality of three phase voltage source converter fed Permanent Magnet Brushless DC Motor (PMBLDCM). In this paper, two control strategies for BLDC motor drive has been investigated. One of the control strategies is based on PFC - CUK converter fed PMBLDCM drive and another one is PFC- interleaved boost converter fed BLDC motor drive. Comparison has been made between the two control stragies in terms of Torque ripple, Total harmonic distortion (THD) and power factor for different operating speeds. The proposed work as been implemented under MATLAB/simulink environment. Simulation results are presented to validate proposed work. From the results, it is observed that PFC interleaved Boost converter fed BLDC motor drive is more effective compared to CUK converter fed BLDC motor drive.

A Soft Switching Control Strategy Based on Interleaved Boost Converter for BLDC Motor Drive

2015 ◽  
Vol 6 (3) ◽  
pp. 516
Author(s):  
V. Ramesh ◽  
Y. Kusuma Latha
Keyword(s):  
Control Strategy ◽  
Torque Ripple ◽  
Boost Converter ◽  
Soft Switching ◽  
Motor Drive ◽  
Bldc Motor ◽  
Switching Losses ◽  
Wide Range ◽  
Interleaved Boost Converter ◽  
Auxiliary Circuit

In this paper, Zero-Voltage-Transition (ZVT) two-cell interleaved boost Power Factor Correction (PFC) converter for voltage source Inverter (VSI) fed permanent magnet brushless DC motor (PMBLDCM) drive has been proposed Scheme reduce the torque ripple of BLDC motor drive and also reduce the switching losses of VSI for Which an auxiliary circuit is designed and added to the interleaved boost converter.  For achieving soft switching, only one switch is used in auxiliary circuit which reduces the torque ripple and switching losses. In this proposed control strategy, the DC link voltage is controlled with interleaved boost converter which is proportional to the desired speed of the BLDC motor. In this paper, six switch and four switch VSI is also implemented with interleaved boost converter topology. A comparison is made between the six switch and Four Switch VSI fed PMBLDC Motor drive and Torque Analysis as been done. To validate the proposed work, results are presented. The results showed that proposed converter control strategy operating under soft switching mode improves the efficiency of the drive system with PFC feature in wide range of the speed control.

Implementation of a Low Cost Resonant Boost Converter Connected Photo Voltaic System

2013 ◽  
Vol 768 ◽  
pp. 80-83
Author(s):  
R.C. Ilambirai ◽  
Rajesh Boga
Keyword(s):  
Hardware Implementation ◽  
Low Cost ◽  
Boost Converter ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Maintenance Cost ◽  
Dc Voltage ◽  
Switching Losses ◽  
Different Temperatures ◽  
Photo Voltaic

This paper proposes a hardware implementation of a resonant boost converter with photovoltaic system. The converter finds varied advantages like lower switching losses and increased efficiency. With the increased rate of energy crisis, the converter has paved a new way for solving the problem, in the recent years. The dc voltage source of the resonant boost converter is replaced by a photovoltaic system that energizes the converter. The renewable energy minimizes the fuel cost and highly decreases the maintenance cost. A PIC microcontroller is used to generate the pulses of the transistor switches in the boost converter and for the inverter circuit. Implementation of a low cost 16F877A microcontroller with a resonant boost photo voltaic system with higher efficiency and the experimental results has been tabulated. The performance of the circuit has been verified at different temperatures for different applications.

scholarly journals An Internal Current Controlled BLDC Motor Drive Supplied with PV Fed High Voltage Gain DC-DC Converter

2018 ◽  
Vol 8 (2) ◽  
pp. 1262
Author(s):  
G. G. Raja Sekhar ◽  
Basavaraja Banakara
Keyword(s):  
Control Method ◽  
Speed Control ◽  
High Gain ◽  
Current Control ◽  
Operating Conditions ◽  
Motor Drive ◽  
Bldc Motor ◽  
Pv System ◽  
Switching Losses ◽  
Current Controller

The paper presents an efficient speed control of brushless DC (BLDC) motor drive for photo-voltaic (PV) system fed system. A high-gain DC-DC converter is employed in the system to boost the PV system low output voltage to a level required for the drive system. High-gain DC-DC converter is operated in closed-loop mode to attain accurate and steady output. The converter (VSI) for BLDC is switched at fundamental frequency and thus reducing high frequency switching losses. Internal current control method is developed and employed for the speed control of PV fed BLDC motor. The appropriateness of the internal current controller for the speed control of PV fed BLDC motor is verified for increamental speed with fixed torque and decreamental speed with fixed torque operating conditions. The system is developed and results are developed using MATLAB/SIMULINK software

Analysis of Variable Speed PFC Chopper Fed BLDC Motor Drive

2015 ◽  
Vol 5 (3) ◽  
pp. 326
Author(s):  
A Jeya Selvan Renius ◽  
K Vinoth Kumar
Keyword(s):  
Power Quality ◽  
Voltage Source ◽  
Brushless Dc Motor ◽  
Motor Drive ◽  
Variable Speed ◽  
Improved Method ◽  
Matlab Simulink ◽  
Brushless Dc ◽  
Switching Losses ◽  
Power Quality Improvement

<p>This paper provides the detailed analysis of the DC-DC chopper fed Brushless DC motor drive used for low-power applications. The various methods used to improve the power quality at the ac mains with lesser number of components are discussed. The most effective method of power quality improvement is also simulated using MATLAB Simulink. Improved method of speed control by controlling the dc link voltage of Voltage Source Inverter is also discussed with reduced switching losses. The continuous and discontinuous modes of operation of the converters are also discussed based on the improvement in power quality. The performance of the most effective solution is simulated in MATLAB Simulink environment and the obtained results are presented.</p>

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