scholarly journals Hybrid PWM Control for Regulating the High-Speed Operation of BLDC Motors and Expanding the Current Sensing Range of DC-link Single-Shunt

Energies ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 4347
Author(s):  
Nam Huh ◽  
Hyung-Seok Park ◽  
Man Hyung Lee ◽  
Jang-Mok Kim
Keyword(s):  
High Speed ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Motor Drive ◽  
Pwm Control ◽  
Operating Characteristics ◽  
Current Sensing ◽  
Brushless Dc ◽  
Sensing Range ◽  
Motor Drive System

This study developed a hybrid pulse width modulation (PWM) control method intended for use in a high-speed brushless dc (BLDC) motor drive system that uses DC-link single-shunt current measurement. The method is designed to regulate rapid operation and expand the current sensing range of the aforementioned system and measurement, respectively. The operating characteristics of most typical PWM methods for BLDC motors were analyzed, after which, a PWM approach suitable for high-speed operation was identified. On the basis of the selected approach, the measurable range of DC-link single-shunt current was examined mathematically to determine a PWM method that is advantageous for current sensing. The results of the two analyses were used as guidance in formulating the proposed hybrid PWM control algorithm. Finally, the PWM method put forward in this work was verified through experimentation.

scholarly journals Investigation Of Predictable And Numerical Pulse Width Modulation Control Scheme For BLDC Motor Drive System

2021 ◽  
Vol 12 (5) ◽  
pp. 1630-1637
Author(s):  
K. Bhaskar, Et. al.
Keyword(s):  
Control System ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Drive System ◽  
Motor Drive ◽  
Bldc Motor ◽  
Brushless Dc ◽  
Control Scheme ◽  
Modulation Control ◽  
Motor Drive System

In this paper shows check the traditional, CPWM (computerized pulse width modulation) regulator combine for control of speed by the automatic group the Brushless dc (BLDC) motor, from these strategies, pursue from CPWM speed control system, the main distinction is in the regulator part. Unique drive framework comprises of a steady Proportional Integrator controller and different has an advanced controller. This paper remembers conversation for the execution of both the strategies and their exhibitions are thought about.

scholarly journals Anti-Windup PI Controller with Tracking for BLDC Motor Drive System: Modeling, Simulation and Implementation on Lab View Based FPGA

2020 ◽  
Vol 8 (5) ◽  
pp. 2064-2070
Keyword(s):  
Pulse Width Modulation ◽  
System Modeling ◽  
Pi Controller ◽  
Motor Drive ◽  
Bldc Motor ◽  
Brushless Dc ◽  
Modeling Simulation ◽  
Field Programmable ◽  
Set Up ◽  
Motor Drive System

Most of the Brushless DC (BLDC) motors drives take up proportional integral (PI) controller and pulse width modulation (PWM) scheme for speed control. BLDC motor drive has strong saturation characteristics and saturation results in a windup phenomenon. This paper presents an Anti-windup drive for BLDC motor. An Anti-windup controller (AWC) with tracking has been employed and which has been modeled in MATLAB / Simulink and comparison has been done between conventional PI controller and AWC with tracking at different starting loads. In this paper, dynamic characteristics of the BLDC motor drive have been examined and results are validated with FPGA (Field Programmable Gate Array) based experimental set up

scholarly journals Expansion of Operating Speed Range of High-Speed BLDC Motor Using Hybrid PWM Switching Method Considering Dead Time

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5212
Author(s):  
Ho-Jin Kim ◽  
Hyung-Seok Park ◽  
Jang-Mok Kim
Keyword(s):  
High Speed ◽  
Control Algorithm ◽  
Pulse Width Modulation ◽  
Dead Time ◽  
Control Method ◽  
Supply Voltage ◽  
Switching Frequency ◽  
Bldc Motor ◽  
Brushless Dc ◽  
Output Torque

In vehicle electrical systems with limited battery power, the output torque and speed of high-speed brushless DC (BLDC) motors can decrease due to unstable and reduced supply voltage or manufacturing errors in the motor back electromotive force (EMF). This paper presents a method that can guarantee the output performance of an inverter through a control algorithm without a separate power supply system and DC-link voltage increase. The proposed control algorithm can increase the output torque and speed of a high-speed BLDC motor by using appropriate selection and change of the inverter’s pulse width modulation (PWM) control method. In this paper, the operation and electrical characteristics of various PWM methods of BLDC motors are analyzed, and the optimal PWM method for improving the control performance of high-speed BLDC motors is presented. In addition, the relationship between the switching frequency, dead time, and voltage utilization was mathematically analyzed. Based on the results of this analysis, the proposed control algorithm automatically changes the PWM switching mode at the point where the output torque and speed need to be extended. The effectiveness and feasibility of the control method proposed in this paper is verified through the experimental results on the designed and manufactured high-speed BLDC motor system for vehicles.

Resonant BLDC Motor Drive System for Medical Applications

2019 ◽  
Vol 14 ◽  
Author(s):  
C. Vidhya ◽  
V. Ravikumar ◽  
S. Muralidha
Keyword(s):  
High Frequency ◽  
Pulse Width Modulation ◽  
Power Converter ◽  
Low Power Consumption ◽  
Motor Drive ◽  
Medical Applications ◽  
Bldc Motor ◽  
Three Phase ◽  
High Frequency Ac ◽  
Motor Drive System

: The objective of this paper is to implement an ac link universal power converter controlled BLDC motor for medical applications. The ac link universal power converter is a soft switched high frequency ac link converter, created using the parallel combination of an inductor and a capacitor. The parallel ac link converter handle the ac voltages and currents with low reactive ratings at the link and offers improved power factor, low power consumption, more efficiency and less weight on comparison with the traditional dc link converter. Because of the high throughput, BLDC motors are preferred widely medical applications. A modulation technique called Space Vector Pulse Width Modulation (SVPWM) is used to generate the three phase power for the BLDC motors from the input DC supply. To validate the proposed system, simulations are performed in MATLAB – Simulink and an experimental prototype is constructed to supplement the simulation results.

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