Low-Cost Variable Speed Drive Based on a Brushless Doubly-Fed Motor and a Fractional Unidirectional Converter

Purpose This paper aims to present an optimal variable speed drive of a doubly fed induction motor (DFIM) with minimum losses and reduced inverter capacity. The operation with minimum losses ensures that the DFIM develops the required load torque at desired speed with maximum energy saving. Moreover, the control of rotor voltage ensures the reduced inverter capacity. The water cycle algorithm (WCA) as one of meta-heuristic optimization techniques is used to estimate the optimal rotor voltages to drive the DFIM with minimum losses. The results of WCA are confirmed with other well-known and reliable optimization method such as particle swarm optimization along with classical method. Design/methodology/approach The DFIM is an efficient alternative solution of synchronous motor (SM) because of its speed is synchronized with both stator and rotor frequencies regardless the load torque. As a result, the speed of variable speed drive associated with DFIM can be controlled through a rotor inverter with reduced capacity rather than SM. The output voltage of rotor inverter is controlled to develop the demanded output power with minimum motor losses. Findings A complete DFIM drive model is developed under MATLAB/SIMULINK environment using d-q dynamic model to verify the strength and significance of the proposed controller. An experimental setup using a 300 W three-phase wound rotor induction motor is established to validate the mathematical models and theoretical results. The motor performances with proposed rotor voltage control (minimum losses) are compared with conventional method of constant voltage to frequency ratio (V/f constant). It is found that the proposed WCA based on controller achieves significant reductions in motor losses, input power and rotor inverter power. Originality/value The paper presents an efficient method to maximize the energy saving of DFIM with a reduced inverter capacity using WCA.

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Low-cost, SCR-based premium power quality variable speed drive technology

Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03. ◽

10.1109/apec.2003.1179316 ◽

2004 ◽

Author(s):

D. Hammell ◽

M. Holveck ◽

E. Limpaecher

Keyword(s):

Power Quality ◽

Low Cost ◽

Variable Speed ◽

Variable Speed Drive

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A low cost stator flux oriented voltage source variable speed drive

Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting ◽

10.1109/ias.1990.152218 ◽

2002 ◽

Cited By ~ 63

Author(s):

Y. Xue ◽

X. Xu ◽

T.G. Habetler ◽

D.M. Divan

Keyword(s):

Low Cost ◽

Voltage Source ◽

Variable Speed ◽

Variable Speed Drive ◽

Stator Flux ◽

Stator Flux Oriented

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

Proceedings of The Conference on Management and Engineering in Industry ◽

10.33555/cmei.v1i1.3 ◽

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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