scholarly journals Improved Self-Sensing Speed Control of IPMSM Drive Based on Cascaded Nonlinear Control

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2205
Author(s):  
Muhammad Usama ◽  
Jaehong Kim
Keyword(s):  
Fuzzy Logic Controller ◽  
Control Design ◽  
Speed Control ◽  
Current Control ◽  
The Self ◽  
Pole Placement ◽  
Motor Drive ◽  
Control Performance ◽  
Control Loop ◽  
Maximum Torque

This paper presents a nonlinear cascaded control design that has been developed to (1) improve the self-sensing speed control performance of an interior permanent magnet synchronous motor (IPMSM) drive by reducing its speed and torque ripples and its phase current harmonic distortion and (2) attain the maximum torque while utilizing the minimum drive current. The nonlinear cascaded control system consists of two nonlinear controls for the speed and current control loop. A fuzzy logic controller (FLC) is employed for the outer speed control loop to regulate the rotor shaft speed. Model predictive current control (MPCC) is utilized for the inner current control loop to regulate the drive phase currents. The nonlinear equation for the dq reference current is derived to implement the maximum torque per armature (MTPA) control to achieve the maximum torque while using the minimum current values. The model reference adaptive system (MRAS) was employed for the speed self-sensing mechanism. The self-sensing speed control performance of the IPMSM motor drive was compared with that of the traditional cascaded control schemes. The stability of the sensorless mechanism was studied using the pole placement method. The proposed nonlinear cascaded control was verified based on the simulation results. The robustness of the control design was ensured under various loads and in a wide speed range. The dynamic performance of the motor drive is improved while circumventing the need to tune the proportional-integral (PI) controller. The self-sensing speed control performance of the IPMSM drive was enhanced significantly by the designed cascaded control model.

scholarly journals Vector Control Algorithm Based on Different Current Control Switching Techniques for Ac Motor Drives

2020 ◽  
Vol 152 ◽  
pp. 03009 ◽  
Author(s):  
Muhammad Usama ◽  
Jaehong Kim
Keyword(s):  
Vector Control ◽  
Harmonic Distortion ◽  
Speed Control ◽  
Current Control ◽  
Motor Drives ◽  
Total Harmonic Distortion ◽  
Motor Drive ◽  
Ac Motor ◽  
Ac Motor Drives ◽  
Speed Response

A comparative analysis of vector control scheme based on different current control switching pulses (HC, SPWM, DPWM and SVPWM) for the speed response of motor drive is analysed in this paper. The control system using different switching techniques, are comparatively simulated and analysed. Ac motor drives are progressively used in high-performance application industries due to small size, efficient performance, robust to torque response and high power to size ratio. A mathematical model of ac motor drives is presented in order to explain the numerical theory of motor drives. The vector control technique is utilized for efficient speed control of ac motor drive based on independent torque and air gap flux control. The study compares the total harmonic distortion contents of phase currents of ac motor drive and speed response in each case. The simulation result shows that total harmonic distortion across the phase current in SVPWM is less as compared to other switching techniques while the rise time in speed response across SVPWM technique is faster as compared to other switching methods. The simulation result of ac motor drives speed control is demonstrated in Matlab/Simulink 2018b.

The Design of Switched Reluctance Motor Drive System Based on Single Chip Microcontroller and CPLD

2012 ◽  
Vol 263-266 ◽  
pp. 3-8
Author(s):  
Chen Ning Wang ◽  
Shi Jun Chen ◽  
Chang Li Zha
Keyword(s):  
Switched Reluctance Motor ◽  
Current Control ◽  
Drive System ◽  
Motor Drive ◽  
Control Loop ◽  
Single Chip ◽  
Switched Reluctance ◽  
Reluctance Motor ◽  
Single Chip Microcontroller ◽  
Motor Drive System

A three-phase 12/8 pole switched reluctance motor drive system is introduced based on single chip microcontroller STC12LE5410AD and CPLD EPM240T100C5N. The design details of the controller are described in this application .To solve the nonlinear problem of switched reluctance motor, PI control algorithms are used to achieve the motor current control loop and speed control loop. The experimental results show that the hardware and software design of switched reluctance motor drive system are reasonable, and the proposed dual closed-loop control method is correct and feasible.

Control of CSR PWM Outer Current Loop Based on Fuzzy Algorithm

2014 ◽  
Vol 672-674 ◽  
pp. 972-976 ◽  
Author(s):  
Zhuo Wang ◽  
Zhang Qing
Keyword(s):  
Fuzzy Controller ◽  
Fuzzy Variable ◽  
Current Control ◽  
Rate Of Change ◽  
Current Loop ◽  
Control Performance ◽  
Control Loop ◽  
Fuzzy Algorithm ◽  
Loop Control ◽  
Control Configuration

This paper expounds the double closed-loop control configuration which is composed by the AC inner current control loop and the DC outer current loop of the CSR PWM rectifier ,and the functions of the inner current loop and the outer current control loop are pointed out. To improve the control performance ,a current controller whose DC outer current loop is designed by the fuzzy algorithm is used. The DC outer current loop error fuzzy variable E’s membership functions is researched ,and also the Rate of change of the current error fuzzy variable EC and the fuzzy variable Δi which is exported by fuzzy controller. Their influences to the control performance are considered. After the simulation experiments, it shows that the DC outer current loop fuzzy control is feasible and effective. The performance of the outer current control loop can be improved.

scholarly journals An Internal Current Controlled BLDC Motor Drive Supplied with PV Fed High Voltage Gain DC-DC Converter

2018 ◽  
Vol 8 (2) ◽  
pp. 1262
Author(s):  
G. G. Raja Sekhar ◽  
Basavaraja Banakara
Keyword(s):  
Control Method ◽  
Speed Control ◽  
High Gain ◽  
Current Control ◽  
Operating Conditions ◽  
Motor Drive ◽  
Bldc Motor ◽  
Pv System ◽  
Switching Losses ◽  
Current Controller

The paper presents an efficient speed control of brushless DC (BLDC) motor drive for photo-voltaic (PV) system fed system. A high-gain DC-DC converter is employed in the system to boost the PV system low output voltage to a level required for the drive system. High-gain DC-DC converter is operated in closed-loop mode to attain accurate and steady output. The converter (VSI) for BLDC is switched at fundamental frequency and thus reducing high frequency switching losses. Internal current control method is developed and employed for the speed control of PV fed BLDC motor. The appropriateness of the internal current controller for the speed control of PV fed BLDC motor is verified for increamental speed with fixed torque and decreamental speed with fixed torque operating conditions. The system is developed and results are developed using MATLAB/SIMULINK software

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