Design of intelligent soft-start controller for induction motor

Author(s):  
Wen-Xiong Li ◽  
Jian-Guo Lu ◽  
Ming-Sheng Liu ◽  
Jie Zhao
Keyword(s):  
Author(s):  
Indra Kusuma

AHSRAE Indonesia Chapter Seminar 2016 always improve the systems and implementation for efficiency energy actually the method and the technical, Chillers plant efficiency with the Green Chiller Concept. In general, as the Building Manager (Management Building) has a target of quality management on Energy (ISO 50001), such as Cost Effective and Saving Energy on the use and maintenance of the units Equipment available on, especially those closely related to the mechanical and electrical components of control , The use and regular maintenance is essential in the mechanical and electrical components where it is very related to the work function of equipment (Unit Equipment) such support; Air Conditioning Engineering (AHU / HVAC / Chiller), Heater (Steam Boiler), Pumps Hydrant and Water (WTP). That on the part of this equipment is widely available induction motor (3 phase) as well as the need of electric power consumption is very frequent and quite large when the engine start switch, due to the Inrust current (6x fold) when the machine Turned ON.Inverters or Variable Speed Drive (VSD) is an electronic device that functions as a controller rounds induction motor 3 phase in Variable star-stop (Soft Start, Smooth, Stage) that the inverter can be in Settings (adjustable) drive the rotation Fan or AC Induction Motor 3 phase in Air flow requirements to transfer flow (CFM) on the unit for the purpose of cooling machine efficiency "Energy Saving and Cost Effective".


Author(s):  
Victor N. Meshcheryakov ◽  
◽  
Andrey I. Boikov ◽  
Denis V. Lastochkin ◽  
◽  
...  
Keyword(s):  

Mathematics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 114
Author(s):  
Victor Goman ◽  
Vladimir Prakht ◽  
Vladimir Dmitrievskii ◽  
Fedor Sarapulov

The article describes a mathematical model of interconnected electromechanical and thermal processes in a linear induction motor (LIM). Here, we present the structure of the thermal model and provide the calculation formulas of the model. The thermal model consisted of eight control volumes on each tooth pitch of the LIM. Moreover, we also present a model of electromechanical processes and its interaction with the thermal model. The electromechanical model was based on the detailed magnetic and electrical equivalent circuits of the LIM. Model verification was performed using a model based on the finite element method and using experimental data. We also conducted a study focused on the necessity of considering the influence of various features of the thermal processes. We herein discuss the application of the model implemented in the MATLAB/Simulink, which was used to analyze the thermal performance of linear transport and technological induction motors. For the traction single-sided linear induction motor, we determined limits of safe operation by considering the unevenness of heating along the length in two cases: natural cooling and forced cooling. For forced cooling, required values of air flow were determined. For the arc induction motor of the screw press, the influence of various factors (i.e., reduction of the stroke, the use of a soft start, and the use of a forced cooling) on heating was evaluated.


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