Today, due to the limited supply and rapid consumption of fossil fuels, transitioning towards renewable energy supplies has become more important than ever. . The purpose of this paper is to present a new LINEAR PERMANENT MAGNET VERNIER MACHINE structure which is designed to capture wave energy and improve the performance of the prototype VERNIER MACHINE. By halving the proposed VERNIER MACHINE, amending gear ratio and changing the shape of PERMANENT MAGNET (PM) and teeth, the performance of the proposed VERNIER MACHINE increases compared to the prototype VERNIER MACHINE. This novelty causes the proposed VERNIER MACHINE to be lighter, more economical and more efficient than the prototype VERNIER MACHINE. Moreover, the main parameters of the proposed VERNIER MACHINE compared to the prototype VERNIER MACHINE are improved, so that in the proposed VERNIER MACHINE, induced voltage, PM flux and thrust force are increased by 30, 68 and 27% respectively. In addition, the ripple of thrust force is reduced by 5%, and the self-inductance is diminished by 55%. All analyses have been performed in the same conditions with the finite element method using Ansys Maxwell software.

In this paper, modeling and analysis of a LINEAR primary PERMANENT MAGNET VERNIER MACHINE (LPPV) is presented. The novelty of the proposed MACHINE is implemented by improvement of the primary structure. Since both armature windings and PERMANENT MAGNET (PM) arrays are located on primary of the MACHINE, this type of VERNIER MACHINEs are classified as flux reversal MACHINEs. VERNIER effect and flux reversal operation lead to high force density in the MACHINE. The simple structure of the MACHINE translator is suitable for MACHINEs with a longdistance rail. Firstly, the operation principle and geometric structure of the MACHINE is presented. Then, the 2D time stepping finite element method (TS-FEM) is utilized for performance evaluation of the MACHINE. Finally, the quality of the no-load flux linkage, the no-load electro motive force (EMF), the thrust and normal forces, the self and mutual inductances and the output power of the MACHINE at loading conditions are discussed and analyzed.

Today, the importance of using VERNIER MACHINEs in wave energy converters has increased because of its simple structure and ability to generate a lot of thrust force at low speeds due to the MAGNETic gear effect. The LINEAR VERNIER PERMANENT MAGNET MACHINE has been designed in various structures. Proper design and selection of the main parameters of the MACHINE will improve performance and increase the efficiency of the LINEAR VERNIER MACHINE. One of these parameters is the shape of the PERMANENT MAGNETs and how they are MAGNETically oriented. The novelty of this paper is the reduction of leakage flux, achieved by changing the shape and orientation of the PERMANENT MAGNET. Three types of LINEAR PERMANENT MAGNET VERNIER MACHINEs with different PERMANENT MAGNET structures and orientation, including V-shape, Halbach array and consequent-pole are presented.  The considered MACHINEs have been compared to each other and to the existing MACHINE in terms of airgap flux density, back EMF, PM flux, Inductance, thrust force, detent force, loss, efficiency, power factor, flux density and flux line, using the finite element method in the same conditions and with the same volume of PERMANENT MAGNETs. The results show that the MAGNETic orientation and shape of the PERMANENT MAGNET have a considerable effect on the leakage flux, and all the proposed models have a lower leakage flux and better performance compared to the existing model.

This paper reviews the current state of the double-stator PERMANENT MAGNET VERNIER (DS-PMV) MACHINE technology. At first, the recent advances in PMV MACHINEs are presented. In the following, the classification of various PMV MACHINEs' configuration is elucidated. In general, this review covers the principle of better understanding of the novel PMV MACHINEs' topologies using different windings configurations, flux modulation poles and stator/rotor structures.

In this study, the technology of LINEAR PERMANENT MAGNET VERNIER Electric MACHINEs (LPMEVMs) is reviewed. Since the introduction of the first LPMVM designs, many designs have been proposed, and many researchers have come up with different ideas. The new LPMEVM technology has attracted the attention of many researchers, so with the efforts of researchers, it can be used in industrial applications of this MACHINE and will be welcomed by craftsmen shortly. In the following, this article examines the work done in the field of LPMVM. In this study, the articles presented in this field are generally reviewed, the new technologies presented, and the structures have been analyzed by researchers and mentioned in the articles. Detailed more precisely on the structures presented and designs made for different parts of the MACHINE, including the mover and translator, which include fixed and moving parts in the LPMV MACHINE, the shape of the grooves and teeth, and the placement of PERMANENT MAGNETs and coils, will be discussed in this paper. This research discusses the designs presented in this LPMV MACHINE and paves the future research path.

In this paper, an analytical model is proposed for evaluating electroMAGNETic performances of PERMANENT MAGNET VERNIER MACHINEs (PMVMs) under healthy and faulty conditions. The proposed model employs flexible MAGNETic equivalent circuit (MEC) method, which its accuracy can be selected by tunable parameters. The model is capable of considering the influence of saturation effect, skewed slots, slot leakage fluxes, and various winding arrangements for the MACHINEs with desired properties. First, the proposed model is used to predict the no-load performance of MACHINE at healthy condition. Then, the MACHINE loading behaviors under healthy and deMAGNETization fault conditions are analyzed by the MEC model. Moreover, the results of the proposed model are compared and validated with those of 2-D finite element method (FEM) and 3-D FEM. Eventually, a specific pattern is extracted from the stator current spectrum to detect the deMAGNETization fault.

Conventional energy sources like fossil fuels are no longer viable due to their limitations and environmental impact. The demand for cleaner, more efficient energy solutions has led to the development of electric MACHINEs with smaller volumes and higher output. The family of PERMANENT MAGNET VERNIER motors have high torque output at very low speeds while being very small in volume. In conventional SVPM, the core losses are high, which leads to heating and reducing the efficiency of the motor, and the power factor of the motor is also low, and the torque can increase in relation to the motor volume. The reluctance torque theory, along with the normal output torque of the motor, increases the final torque of the motor. In addition, the toothing of the rotor reduces the cross-sectional area and weight of the rotor. With the reduction of the cross-sectional area, the eddy currents in the core are reduced, the power factor increases and the efficiency of the motor improves. Therefore, in this paper, a spoke-type PERMANENT MAGNET VERNIER motor with a rotor similar to the reluctance rotor has been designed, which has higher torque, lower losses, and higher power factor compared to conventional spoke-type PERMANENT MAGNET VERNIER motors.