Abstract
The paper presents an improving speed control method using a field-oriented control (FOC) technique for the hysteresis current (HC) controller in the induction motor drive. The basic principle of a controller applying hysteresis band current is comparing reference currents and the measured currents to generate switching pulses for controlling an inverter. In the typical FOC for the HC controller, the rotor flux angle’s value will increase to infinity due to the integral algorithm’s error accumulation. This problem can lead to the faulty operation of the induction motor drive (IMD) system. In this paper, a current model with the advantage of precisely determining the periodic rotor flux angle is used in the FOC technique to provide reference currents for the current controller. The rotor flux angle will periodically change according to the motor speed in the range [-π π] during the operation of IMD. The operation of the induction motor drive is implemented and tested by MATLAB/SIMULINK software. The simulation results have demonstrated the effectiveness of the HC control method-based FOC technique with periodic rotor flux angle in controlling motor speed. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium provided the original work is properly cited.
Highlights
Induction motors (IMs) with outstanding manufacturing cost, size, and durability are among the most popular machine types
Etahcihs vcaorniatbrloel wmileltdheocdlarme aaydamtaeetytpseoimn ethpe raocbtulealmcsonintrol i∗Sx mtohdeela.cAtunadl eoapcehradtaitoantywpehehnasthaelivmailtu; ethoef vthaleuerootforthe vflaruiaxblaenwgliell oavuetormcoamticeasllythreetdurantatotzyeproe wlimheintaitt ieoxncse.eds The three-phase current has two functions: the limit of the data type. This control method one is used in the hysteresis current (HC) controller to generate conmayTmheisetpsaompeerprroebvlieemwssinththeetaycptuicaal lopFeOraCtionmwethheondthe trol switching pulses to the inverter, the other is vualsueed offorthteherotHorCflcuoxntarnogllleerovinerc[o1m3,es17th,e18da] taantdype applied modified Clarke’s and Park’s transforlitmhietantipornos.poses an improvement based on the cur- mations to converted from [a, b, c] coordinate rent model for calculating the rotor flux angle. thTehTHehCirsecpsouanplttreorilslreertvhiineawt[1st3ht]h,ee[e1tsy7tp]i,imc[a1al8t]FeaOdnCdflutmhxeentahnpordgolpeuosiessedsafaonr system into [x, below [17, 18]: y]
Simulation results of two field-oriented control (FOC) methods applying for HC controller in speed control of induction motor drive (IMD) are presented
Summary
Induction motors (IMs) with outstanding manufacturing cost, size, and durability are among the most popular machine types. Mtohdeela.cAtunadl eoapcehradtaitoantywpehehnasthaelivmailtu; ethoef vthaleuerootforthe vflaruiaxblaenwgliell oavuetormcoamticeasllythreetdurantatotzyeproe wlimheintaitt ieoxncse.eds The three-phase current has two functions: the limit of the data type As a result, this control method one is used in the HC controller to generate conmayTmheisetpsaompeerprroebvlieemwssinththeetaycptuicaal lopFeOraCtionmwethheondthe trol switching pulses to the inverter, the other is vualsueed offorthteherotHorCflcuoxntarnogllleerovinerc[o1m3,es17th,e18da] taantdype applied modified Clarke’s and Park’s transforlitmhietantipornos.poses an improvement based on the cur- mations to converted from [a, b, c] coordinate rent model for calculating the rotor flux angle. The current in [α, β] coordinate system com- In this way, the estimated flux angle is a pebining with rotor speed to convert into [d, q] ro- riodic function that is suitable with the actual tating coordinate system corresponding to rotor control model. The rotor flux and rotor flux angle are used in the control algorithms to generate the reference stator currents for the FOC method with the HC controller
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