scholarly journals Advanced Grid Connected Solar Variable Speed Drive for Three Phase Asynchronous Motors. (Dept. E)

2021 ◽  
Vol 46 (4) ◽  
pp. 1-9
Author(s):  
Ahmed Mahmoud Ismaiel ◽  
Basem E. Elnaghi ◽  
Reham Mohammed
Keyword(s):  
Variable Speed ◽  
Variable Speed Drive ◽  
Asynchronous Motors ◽  
Three Phase

Variable speed drive with PFC front‐end for three‐phase induction motor

2017 ◽  
Vol 53 (16) ◽  
pp. 1139-1140 ◽  
Author(s):  
M. Gonzalez‐Ramirez ◽  
C.A. Cruz‐Villar
Keyword(s):  
Induction Motor ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Front End ◽  
Three Phase

scholarly journals Design of a three phase four quadrant variable speed drive for permanent magnet brushless DC motors

2016 ◽  
Author(s):  
◽  
Jonas-Yelee Dakora
Keyword(s):  
Permanent Magnet ◽  
Direct Current ◽  
Dc Motor ◽  
Bldc Motor ◽  
Variable Speed ◽  
Suitable Alternative ◽  
Variable Speed Drive ◽  
Three Phase ◽  
Electric Bicycle ◽  
Four Quadrant

The aim of this research project is to design a three phase four quadrant variable speed drive (VSD) for a permanent magnet brushless direct current motor (PMBLDC) that can be applied to an electric bicycle (e-bike). The design is confined to PMBLDC motors with a maximum power rating of 1.5kW. The speed controller operates in current mode at a maximum voltage and current rating of 50V and 30A, respectively. The VSD has the ability to smoothly control the current delivered to the DC motor and therefore controls its torque. The motor’s current is limited in all four quadrants of operation, and its speed is limited in the forward and reverse directions. The performance of the proposed DC motor VSD system is tested on an electric- bicycle. The PMBLDC motor has three hall sensors embedded into the stator to determine rotor position. A phase switcher module interprets the position signals and produces a switching pattern. This effectively transforms the BLDC motor into a direct current (DC) brushed motor. The unipolar switching scheme used ensures that current flows out of the battery only for motoring operation and into the battery during regenerative braking. The current and torque are directly proportional in a BLDC motor. Torque control is achieved in the BLDC motor using a single channel current controller. The phase switcher current is monitored and used to control the duty cycle of the synchronous converter switches. The proposed e-bike speed control system provides efficient control in all four quadrants of operation and it is a suitable alternative for a low cost transportation mode.

scholarly journals Implementation and Control of Six-Phase Induction Motor Driven by a Three-Phase Supply

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7798
Author(s):  
Mohamed I. Abdelwanis ◽  
Essam M. Rashad ◽  
Ibrahim B. M. Taha ◽  
Fathalla F. Selim
Keyword(s):  
Induction Motor ◽  
Fine Tuning ◽  
Primary Circuit ◽  
Phase Variable ◽  
Variable Speed ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Variable Speed Drive ◽  
Phase Inverter ◽  
Three Phase

This paper is interested in implementing and controlling a modified six-phase induction motor (MSPIM) when fed from a three-phase supply either via an inverter or with a direct grid connection loaded by a centrifugal pump. The main aims of using the MSPIM are to enhance motor reliability and reduce torque pulsation. A three-to-six phase transformer has been designed, implemented, and employed to enable the SPIM to be driven from a three-phase supply. It is preferable to use the three-to-six phase transformers integrated with three-phase inverter on using the six-phase inverter to generate lower values of harmonics and lower steady-state error of speed and reduce the starting current and because also it isolates the primary circuit from the secondary, and the cost will be lower compared to the design of a special six-phase inverter. Dynamic models of SPIM, three-to-six phase transformer, and three-phase variable speed drive are derived. Then, a scalar (V/F) closed-loop control of SPIM is employed, and the results are discussed. Fine-tuning of PID controllers is used to keep the motor speed tracking the reference value. A low pass filter is connected to reduce the ripple of voltage and current waveforms. An experimental setup has been built and implemented to check the possibility of controlling SPIM by a variable speed drive system fed from a three-to-six phase transformer. It is found that the proposed method can be effectively used to drive the SPIM from a three-phase supply.

DESIGN, SIMULATION AND IMPLEMENTATION MONITORING SYSTEM FOR SYSTEM CONTROL C4 FEEDING PUMP FOR FEED VAPORIZATION IN THE BUTADIENE PLANT

2020 ◽  
Vol 1 (1) ◽  
pp. 31-35
Author(s):  
Fahmi Yunistyawan ◽  
Yunistyawan J Berchmans ◽  
Gembong Baskoro
Keyword(s):  
Motor Control ◽  
Control System ◽  
Field Operator ◽  
System Control ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Software And Hardware ◽  
Discharge Pressure ◽  
Selection Of

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.

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