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This paper presented control methods for the reduction of the ripple torque and the control of speed in the residential of BLDC and different applications using ZSI. Photovoltaic (PV) systems' renewable energy is regarded as the input of BLDC motors. The ZSI has different benefits such as low cost in addition to improved efficiency. In addition, control of the speed torque ripple is achieved with the consumption of the ZSI. To improve the control performance, the Functional Order Proportional Integral Derivative (FOPID) controller can be utilized. Here, the FOPID controller parameters can be optimized through the consumption of the Emperor Penguin optimization (EPO) algorithm. The errors of torques and speeds are decreased with the consumption of the ZSI with the EPO algorithm. Therefore, to realize the purposes, EPO can be proposed to standardize the FOPID frameworks of the motors of BLDC controllers of the speeds and torque. These presented methods are carried out from the Simulink/MATLAB in addition it is compared among the previous methods of PSO, SSA, also and FA. The performance can be evaluated with two different conditions, constant irradiance conditions, and different irradiance conditions. [ABSTRACT FROM AUTHOR]

The aim of this article is to design an improved African buffalo optimization-based Takagi–Sugeno–Kang Fuzzy PI Controller (IABO-TSKFPIC) Model for brushless direct current motors to achieve better and more reliable speed control under various load and speed conditions. Due to the nonlinearity properties of BLDC motor drives, such as extended power fluctuation, settling time, fluctuation of steady-state error, and other effects, controllability is poor. To overcome these issues, the proposed model uses an improved Takagi–Sugeno–Kang fuzzy PI controller that incorporates the IABO algorithm in a self-tuned regulator structure to minimize the supplied objective function and meet inequality requirements. The use of Hall sensors in speed control is restricted due to component failure, low dependability, the need for specialized mechanical mounting solutions, and electrical noise issues. The performance of the IABO-TSKFPIC Model is evaluated in terms of rise time, peak overshoot, settling time, and steady-state error. Simulation results show that the suggested IABO-tuned TSK Fuzzy PI controller outperforms traditional and metaheuristic algorithms in terms of time-domain characteristics, control effort, and performance indices. The IABO-TSKFPIC Model improves the performance of the optimized fuzzy PI controller with greater output voltage compared to state-of-the-art studies. [ABSTRACT FROM AUTHOR]

In order to improve the robustness, disturbance rejection and dynamic response performance of permanent magnet synchronous motor (PMSM) speed servo system, a novel sliding mode control (NSMC) strategy is adopted to replace the traditional proportion integral (PI) regulator in the design of speed controller. The mathematical model of PMSM is analyzed and a sliding mode controller based on a novel reaching technique is proposed. The integral of speed error is introduced into sliding mode surface to avoid the requirements of acceleration signal and reduced the steady-state error of the system. Meanwhile, a variable speed reaching method is imported to make the approaching speed correlate with the change of system state |s|, so as to improve the dynamic quality. In addition, the sigmoid function is used to replace the sign function in the conventional SMC, which further reduces chattering phenomena. Simulation and experimental results show that the proposed NSMC method based on the new reaching technique can realize precise speed control. Compared with the conventional PI and SMC control, this method not only achieves a fastest and best response speed, but also has a strongest robustness of resisting the external disturbance. [ABSTRACT FROM AUTHOR]

In this article, the industrial application of three-phase H-bridge inverter fed PMBLDC drive system with its regenerative braking and motoring modes of operation produce electric energy harvestation and its effective utilization in an electric bike is discussed. The H-bridge inverter topology having two legs with four gate drive switches, reduce current ripples and improves the current rating of a drive system. Therefore, the three-phase H-bridge inverter connected PMBLDC drive can be preferred for high torque applications with reduced torque ripples during the commutation of switches. The PMBLDC drive is a permanent magnet machine; so it is proposed in both motoring and regenerative braking modes of operation. In motoring mode, drive consumes electrical energy from battery source for converting the electrical energy into suitable mechanical energy for riding the electric bike. But in a regenerative braking mode, drive produces electricity for charging the battery source from a mechanical loading of an electric bike. The regenerative braking mode of operation improves the overall efficiency of the drive system. The performance of a three-phase H-bridge inverter fed PMBLDC drive with these modes are analyzed using MATLAB/Simulink software, the hardware circuit is implemented with supporting simulations in the Proteus 8.0 software and finally the electric bike is designed using 2 hp PMBLDC drive system. [ABSTRACT FROM AUTHOR]

Brushless DC (BLDC) motor drives have witnessed an increasing demand in recent times for various industrial applications. One of the main advantage of these motors is that they can be controlled in a wide frequency range. Harmonic mitigation plays a vital role in improving the drive performance and further increases the longevity of motor. There are methods which reduce the harmonic distortion but these are limited to a narrow frequency band. This article deals with a novel filter mechanism by introducing a servo controlled inductor instead of fixed LC filters to improve the THD of the drive. The proposed strategy is advantageous over wide frequency range and hence over complete speed range of BLDC motor drives and is verified via simulations using MATLAB/Simulink and experimented on a laboratory setup of a 3 kW, 48 V, 8 pole pair, 400 Hz BLDC motor and a three-phase IGBT-based inverter. TI's DSP TMS320F2812 is used as a central controller to implement the control algorithm. Results presented in this article validate the effectiveness of the proposed strategy. [ABSTRACT FROM AUTHOR]

This paper introduces an effective four-level voltage switching state algorithm for direct torque controlled open end winding induction motor drive with two-two level inverters in dual mode. In the recent days, direct torque control of open end winding induction motor drive became an interesting area for researchers because it provides high dynamic performance and instantaneous control of stator flux and torque. It is more important especially in applications like propulsion and hybrid electric vehicles they require ripple free torque. The direct torque control provides high flux, torque ripple, and variable switching frequency. This paper introduces an effective voltage switching state algorithm for an open end winding induction motor drive to reduce torque and flux ripple at different frequencies of operation. The experimental results show that the proposed algorithm reduces torque and flux ripples without losing features of conventional direct torque control (DTC) algorithm and in addition it provides multi-level operation. [ABSTRACT FROM AUTHOR]

A variable structure robust position controller is presented for a three-phase synchronous reluctance motor. Linear control and variable structure control and pulse-width modulation generation are combined. These provide robust, fast, and accurate position control without the penalty of high chattering. Schemes, including conventional sliding-mode control and the proposed scheme, are tested under parameter variations, and sudden perturbations are applied to the system at a specific time, then compared. This scheme uses both advantages of traditional variable structure control methods and linear methods. The disadvantages of each method, such as chattering and parameter sensitivity, are minimized. Results demonstrate that the proposed technique preserves the classical linear position control merits, while both the steady-state and transient behavior are significantly improved in terms of robustness, accuracy, and low ripple. The results also prove that the position reference command is perfectly tracked in spite of motor parameter uncertainties and load torque disturbance in control of the system that uses the new schemes. [ABSTRACT FROM AUTHOR]

This article shows the systematic evaluation of the performance of capacitor-run induction motor driving domestic fans using different power conversion methods. The power converters employed are AC/AC converters with phase angle control and multiple pulse width modulation AC chopper and integral cycle control. It is shown through extensive simulation and experimentation that phase angle control in the main winding of the fan motor yields improved results. [ABSTRACT FROM AUTHOR]

In this article, a mathematical model of ultrasonic motors for speed control, which includes the non-linearity and approximation of the dead-zone in control input, is presented. The intrinsic properties of ultrasonic motors (high torque for low speed, high static torque, compact in size, etc.) offer great advantages for industrial applications. However, the speed property of ultrasonic motors has a strong non-linear property as well as the dead-zone effect in control input associated with load torque. These properties present serious problems for accurate speed control. This article presents a mathematical model represented by a sinusoidal function, which includes these properties. The model is simple and has good approximation of the non-linearity and time varying properties. The proposed speed model has been validated by experimental results. [ABSTRACT FROM AUTHOR]

This article presents a new approach for speed control of traveling-wave ultrasonic motors. The key is to provide a practical model to allow for controller design and simulation using standard simulation software. The model offers a simple relationship between the control inputs and the output torque. Operating frequency and voltage amplitudes are used as control inputs through direct pulse-width-modulation. A speed control system using a low cost DSP microcontroller has been implemented. A PI controller has been designed through simulation to compare with the experiments. Consistent results have been obtained, demonstrating the feasibility and effectiveness of this approach. [ABSTRACT FROM AUTHOR]

Vector control (VC) of an induction motor (IM) is generally implemented by applying a proportional and integral (PI) controller owing to its simple design technique. The performance of an IM deteriorates under the variations of load torque and parameters where the gains of a PI controller are kept constant. Therefore this paper presents a self-tuning PI (ST-PI) controller based on fuzzy logic control (FLC) theory for high performance of an IM. According to the pole placement technique, the gains of a PI controller are tuned by applying FLC. The effectiveness of the proposed fuzzy-logic-based ST-PI controller is demonstrated through simulation results. These clarify that the proposed ST-PI controller can provide better response than a conventional PI controller. [ABSTRACT FROM AUTHOR]

To improve the efficiency of an induction motor (IM), an algorithm has been developed in terms of slip frequency. A discrete-time multi-input and multi-output (MIMO) optimal regulator is proposed to achieve the desired speed with efficiency optimization. Furthermore, a full-order observer is proposed to estimate rotor flux and magnetizing current because these states of IM are feedback to design the proposed controller. The performances of the efficiency optimized speed control and observer system have been verified by simulation. Regarding the simulation study, it can be stated that the proposed controller and observer system are suitable for the implementation of efficiency optimized speed control of IM. [ABSTRACT FROM AUTHOR]

This article presents steady-state analysis and simulation of triac-voltage controlled capacitor run single-phase induction motor driving a domestic fan load. Two schemes of circuits, namely, line controlled and branch controlled configurations, suitable for speed control are considered and simulation results are presented. Also, the two schemes are compared in terms of motor efficiency, line current pollution, and input power factor, keeping motor speed as the independent variable. It is shown that branch controlled circuit is superior in performance compared to line controlled one. Analytical, simulation, and experimental results are presented. [ABSTRACT FROM AUTHOR]

An induction motor is a non-linear device and its parameters vary with operating point. This article explains the application of the Genetic Algorithm (GA) to the design of an optimum controller structure for speed control of an a.c. voltage controller fed-induction motor drive application. An incremental model of an a.c. voltage controller fed-induction motor drive is derived and is used for simulation study. The GA is used to derive optimal values of the controller parameters so that the best dynamic response is obtained for unit step load disturbance, irrespective of motor operating point. High gain control theory is also used to derive the controller, and it is found that the two controller structures resemble each other. [ABSTRACT FROM AUTHOR]