Design Of Motor Research Articles

Design and analysis of electromagnetic and mechanical structure of ultra-high-speed slotted solid rotor induction motor

In this paper, a high speed slotted solid-rotor induction motor (SSRIM) with rated power of 15 kW and rated speed of 120krpm is studied, and its electromagnetic performance and rotor mechanical structure are optimized. First, according to the empirical formula of motor design, the volume size of the motor is determined. Then, by constructing a two-dimensional finite element model, the slot matching scheme and coil pitch are optimized, and the influence of different slot matching scheme and coil pitch on the output torque and harmonics of the motor is compared. Then, the influence of rotor slot size on electromagnetic and mechanical properties of the motor is described in detail. Finally, a finite element model is constructed to verify the mechanical strength of the rotor, and the influence of temperature on the deformation and stress of the rotor is explored. Through the analysis, it is found that the slot matching scheme has a great influence on the torque ripple of the motor, and the torque ripple can be reduced by selecting the slot matching scheme reasonably. Secondly, the size of the rotor slot has a great impact on the electromagnetic and mechanical properties of the motor, and it is necessary to comprehensively consider and jointly optimize its size.

Design and study of moving-iron torque motor for two-dimensional proportional servo valve

This paper proposes a novel moving-iron torque motor designed for two-dimensional (2D) valves. The torque motor features a strap spring in place of the traditional return spring, effectively reducing the overall number of springs. The unique design allows the torque motor to return to its circumferential neutral position through the return torque generated by the strap spring. In order to analyze the torque-displacement characteristics of the torque motor, an analytical model is established, and a simulation model is constructed based on the equivalent magnetic circuit method, which takes into account the magnetic leakage at the control coil and the working air gap. In order to select a strap spring that matches the stiffness of the magnetic spring of the torque motor, the structural parameters of the spring are optimized using the response surface method with multi-objective optimization, and finally three springs with different stiffnesses are manufactured according to the optimization results. The experimental results show that the maximum step-up time of the torque motor is 20.6 ms, the maximum step-down time is 21.6 ms, the maximum hysteresis loop is 12.5%, and the maximum linearity is 20%. In order to improve the −3dB cut-off frequency of the torque motor, this paper adopts the current closed-loop control method, and increases the maximum cut-off frequency not exceeding 25 Hz in the open-loop mode to 110 Hz.The hysteresis loop and linearity of the torque motor decrease with the increase of the spring stiffness. The amplitude frequency −3dB cutoff frequency increases with increasing spring stiffness.

Finite Element Analysis of Electromagnetic Characteristics of a Single-Phase Permanent Magnet Linear Oscillation Actuator.

The electromagnetic characteristics of a single-phase permanent magnet linear oscillation actuator are analyzed by the finite element method. Firstly, the basic structure and operation principle of the linear oscillation actuator are introduced. The internal stator slot and arc tooth are used to reduce the detent force. According to the principle of electromagnetic fields, the electromagnetic field equation is listed and the function of the motor is deduced. At the same time, the eight-node hexahedral element is used to calculate the listed universal functions, and the inductance, flux linkage, induced electromotive force and electromagnetic force of the motor are deduced. The electromagnetic field of the motor is simulated by two-dimensional and three-dimensional finite element methods, and the accuracy of the calculation results of the electromagnetic characteristics of the cylindrical linear oscillation motor by the two methods is compared and analyzed. Finally, an experimental prototype was developed and the no-load characteristics of the motor were tested using the existing linear motor towing method. By comparing the experimental and simulation results, the accuracy of the theoretical analysis and the rationality of the motor design are verified.

Multi-objective Optimization of a Yoke-less Axial Flux Switching PM Motor based on Hybrid Particle Swarm Optimization

In this study, a hybrid particle swarm optimization (HPSO) approach is presented for enhancing the performance of a three-phase, 12-slot, 19-pole yoke-less axial-field flux-switching permanent magnet (YASA-AFFSPM) motor. The aim of the optimization process is to achieve a motor that demonstrates high efficiency and stable operation. To facilitate this, a finite element analysis model is developed, and a multi-objective optimization function utilizing weight coefficients is created. The variables in this study include the split ratio, stator axial length, sandwiching pole angle, rotor pole angle, permanent magnet arc, and the number of conductors per slot. The optimization objectives encompass efficiency, power factor, cogging torque, and average torque, evaluated under both no-load and load conditions. Findings indicate that the hybrid particle swarm optimization method excels in its search capabilities and convergence speed, resulting in motor designs that align closely with the intended specifications. Finite element simulations further validate the proposed methodology's effectiveness and practicality. Finally, experimental results are presented to confirm the reliability of the suggested algorithm.

Influence of the neck length of urease-powered flask-like colloidal motors on their kinematic behavior.

Enzyme-powered synthetic colloidal motors hold promising potential for in vivo medical applications because of their unique features such as self-propulsion, sub-micrometer size, fuel bioavailability, and structural and functional versatility. However, the key parameters influencing the propulsion efficiency of enzyme-powered colloidal motors still remain unclear. Here, we report the effect of the neck length of urease-powered pentosan flask-like colloidal motors on their kinematic behavior resembling the role of bacterial flagella. The sub-micrometer-sized and streamlined pentosan flask-like colloidal motors with variable neck lengths are synthesized through a facile interfacial dynamic assembly and polymerization strategy. The urease molecules are loaded through vacuum infusion technology and thus the urease-triggered catalytic reaction can propel the pentosan flask-like colloidal motors to move autonomously in the urea solution. The self-propelled speed of these pentosan flask-like colloidal motors significantly increases with the elongating neck lengths. The mechanism of the relationship between the neck length and self-propelled motion is that a longer neck can provide a larger self-propelled force due to the larger force area and stabilize the rotation because of the increased rotational friction. This research can provide guidance for the design of biomedical colloidal motors.

Design and numerical simulation of a novel pilot control cartridge valve distribution radial piston motor

Design and numerical simulation of a novel pilot control cartridge valve distribution radial piston motor

Comparison and design of the transverse flux motor with axial and radial permanent magnet for electrical propulsion system

Comparison and design of the transverse flux motor with axial and radial permanent magnet for electrical propulsion system

Design and implementation of direct-drive axial flux permanent magnet motor for aviation propeller

Design and implementation of direct-drive axial flux permanent magnet motor for aviation propeller

Design of Axial-Flux Permanent Magnet Motors With High Torque Density and Low Thermal Raise for Electric Motorcycle

Design of Axial-Flux Permanent Magnet Motors With High Torque Density and Low Thermal Raise for Electric Motorcycle

Optimizing electric traction motor design: Analyzing the benefits of a circular economy

Optimizing electric traction motor design: Analyzing the benefits of a circular economy

Cost-effective IE2 high-efficiency single-phase induction motor design and prototyping

Cost-effective IE2 high-efficiency single-phase induction motor design and prototyping

Performance evaluation of lead-free potassium sodium niobate-based piezoceramics for ultrasonic motor design

Performance evaluation of lead-free potassium sodium niobate-based piezoceramics for ultrasonic motor design

Integrating Advanced Control Strategies for Enhanced Motor Efficiency in Robotics

Motor efficiency requires diversified paradigm integration to facilitate the advancement of robotics applications through precision, energy optimization, and reliability. Advanced control strategies like AI-driven predictive mechanisms, harmonic drive systems, and real-time feedback tools in motor performance underline the efficiency required in robotic technologies. As a collective role for robotic motors, the approaches enable precise torque and speed modulation, dynamic adaptability to environmental changes, and energy-efficient operation in controlled strategies. Understanding theoretical foundations in motor efficiency guides decisions on the selection and implementation of robotic technologies in the automation of industrial and manufacturing processes. Comparative robotic role analyses pinpoint optimization for the technology to harness dynamic responsiveness and energy utilization efficiency. The ways to implement advanced motor controls underscore the potential of combining intelligent algorithms with innovative motor designs to elevate robotics reliance in complex situations. The advanced control strategies showcase the need for efficiency, adaptability, and relevance of robotic solutions in trending technological applications.

Comparative Analysis of Differential-Mode Impedance in Single-Phase Induction Motors

This paper presents an experimental study of the high-frequency impedance behavior of four types of single-phase induction motors: Split-Phase Induction Motor (SPIM), Permanent Split Capacitor Induction Motor (PCIM), Capacitor Start Induction Motor (CSIM) and Single Phase Repulsion Motor (RIM). A differential-mode impedance and phase angle over a range of frequencies, including resonance and anti-resonance points, are the focus of the present study. The obtained results show that every type of motor has distinctive impedance characteristics; the RIM always shows higher impedance than other motors, whereas the CSIM exhibits lower impedance in low frequencies. Those differences unveil the influence of the motor design on Electromagnetic Compatibility (EMC) performance, since high-impedance motors, such as the RIM, present lower Electromagnetic Interference (EMI) emissions and lower susceptibility to external electromagnetic interference, therefore better general EMC performance. Also, the frequencies of resonance and anti-resonance vary between the motors, which is also reflected in their different electrical and structural designs. The study provides helpful insights into the optimization of motor designs to achieve better EMC compliance and operational stability in various applications.

PERFORMANCE COMPARISON OF WINDING TYPES AND ROTOR STRUCTURE IN SYNCHRONOUS RELUCTANCE MOTOR

Synchronous Reluctance Motors (SynRMs) have attracted a lot of attention in recent years due to their simple construction, high efficiency and the fact that they do not require rare earth magnets. SynRMs produce torque by directing the magnetic flux through barriers in the rotor, making them a low-cost alternative. The performance of the motor can vary significantly depending on the design of the stator windings and rotor barriers. Different combinations of stator winding types and the number of rotor barriers directly affect the critical performance parameters of the motor such as torque, efficiency, torque ripple, output power, saliency ratio and copper consumption. In this study, SynRMs using six different stator winding types and two different rotor barrier structures (3 and 4 barriers) are analyzed. Output power, efficiency, torque, torque ripple, saliency ratio, d-q axis inductances depending on current phase angle, total losses and copper consumption are investigated. The effect of full pitch and shortened pitch configurations in winding structures on the performance is discussed comparatively. The effect of 3 and 4 barrier rotors on these parameters is also evaluated. These analyses aim to reveal the ways in which winding and rotor configurations in motor design can be used to optimize performance. SynRMs can provide energy efficiency and cost benefits in a variety of industrial applications, therefore selecting the proper configuration is of great importance from both an economic and performance perspective.

Design and Research on the Variable Polar Distance of the Double-Sided Linear Induction Motor for Electromagnetic Catapult

According to the special technical requirements of carrier-based aircraft catapults, this paper describes the design of a variable pole distance bilateral linear induction motor. When the traditional constant pole motor is used as the catapult of carrier-based aircraft, the current frequency continues to increase during the catapult process, which greatly aggravates the burden of the motor. Therefore, we propose a variable pole length primary double-sided linear induction motor structure. Compared with the traditional constant pole motor structure, this structure can gradually increase the pole distance with an increase in speed when the current frequency remains unchanged. In contrast, the variable pole distance method with a current frequency of 200 Hz has a pole distance of 0.262 m when the displacement is 10 m, and the pole distance increases to 0.352 m when the displacement is 100 m. By maintaining a constant current frequency, this method effectively reduces the control complexity at high speed. Through the theoretical analysis and research calculation conducted on the designed motor, a finite element simulation model was also established by ANSYS 14.0, and the influence of the change in the pole distance on the performance of the motor was analyzed. The magnetic field line and magnetic density distribution of the motor are simulated and analyzed, and the validity of the theoretical calculation is verified.

Modeling and design of linear induction motors using a reluctance network method

The methods of modeling and designing of Linear Induction Motors (LIM) are considered as the most important element of competition among manufacturers of this category of motors. Although, the majority of manufacturers employ finite element-based methods to achieve more accurate design. However, these methods still suffer from a longer computation time. Moreover, the Finite Element Method (FEM) require very significant and expensive computing equipment. Researchers have been created a number of analysis techniques to solve this conundrum and expedite computation, but the accuracy of the findings is still below acceptable bounds. In this work, we propose the modeling and design of the LIM using the Reluctance Network Method (RNM) in order to reduce the calculation time and improve the accuracy of the results. sing the COMSOL Multiphysics software, a comparative analysis with the FEM is introduced in order to verify the outcomes of the previous one. Compared to finite elements, the results enabled a computation time reduction of 27 hours. The proposed RNM-based methodology demonstrates the potential to enhance the speed and accuracy of LIM modeling and design, which could provide a competitive advantage for manufacturers in the industry. The enhanced analysis provides a more comprehensive interpretation of the results, highlighting both the technical achievements and practical implications of using RNM for LIM modeling. The key takeaway is that while RNM shows slightly lower accuracy compared to FEM (87% vs 88%), it offers a significant advantage in computation time (77% reduction) while maintaining acceptable accuracy for practical applications.

Design and Optimization of Air Motor with Gear Rotor System for Enhanced Performance

Design and Optimization of Air Motor with Gear Rotor System for Enhanced Performance

Development of Piezoelectric Inertial Rotary Motor for Free-Space Optical Communication Systems.

This paper presents the design, development, and investigation of a novel piezoelectric inertial motor whose target application is the low Earth orbit (LEO) temperature conditions. The motor utilizes the inertial stick-slip principle, driven by the first bending mode of three piezoelectric bimorph plates, and is compact and lightweight, with a total volume of 443 cm3 and a mass of 28.14 g. Numerical simulations and experimental investigations were conducted to assess the mechanical and electromechanical performance of the motor in a temperature range from -20 °C to 40 °C. The results show that the motor's resonant frequency decreases from 12,810 Hz at -20 °C to 12,640 Hz at 40 °C, with a total deviation of 170 Hz. The displacement amplitude increased from 12.61 μm to 13.31 μm across the same temperature range, indicating an improved mechanical response at higher temperatures. The motor achieved a maximum angular speed up to 1200 RPM and a stall torque of 13.1 N·mm at an excitation voltage amplitude of 180 Vp-p. The simple and scalable design, combined with its stability under varying temperature conditions, makes it well suited for small satellite applications, particularly in precision positioning tasks such as satellite orientation and free-space optical (FSO) communications.

Analytical Calculation of Mutual Inductance of Search Coils in Interior Permanent Magnet Synchronous Motor

Inductance is an important parameter for motor design and control, and the performance of the motor is closely related to the inductance parameter. To solve the problem of the complex magnetic circuit structure of search coil mutual inductance, this paper takes an 8-pole and 48-slot interior permanent magnet synchronous motor (IPMSM) as the object to carry out the relevant research on the formula of search coil mutual inductance, illustrates the method of calculating the mutual inductance of the search coil, and compares and verifies the proposed method through finite element analysis and the actual measurement results. By setting up a procedure for calculating the magnetic flux of the search coil, the magnetic flux of each sub-coil of the search coil is analyzed and calculated. The mutual inductance of the search coil is calculated by summing up the magnetic chains of different sub-coils between the phases of the search coil. Lastly, the finite element simulation of the permanent magnet synchronous motor (PMSM) with the placement of the search coil is carried out, the inductance of the search coil in the experimental prototype is measured practically, and the finite element simulation results of the mutual inductance of the search coil are compared with the actual measurement results, which proves the correctness of the theoretical analysis.