The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, the end forces caused by the longitude end effects in linear permanent magnet synchronous machines (LPMSMs) are analyzed and minimized. First, the left/right-end forces are calculated based on an analytical model and the Maxwell stress tensor, in which the optimal integration surfaces are investigated. Then, based on the spectrum analysis of the left/right-end forces, two different...
In this paper, in order to replace a conventional electric linear actuator which is consist of rotary PM machine and ball screw, a novel double-sided five-phase modular linear permanent magnet synchronous machine (MLPMSM) is proposed and designed with the same volume. The basic structure of the machine is firstly described and the major dimensions of one module are then optimized to acquire the largest...
In order to reduce the permanent magnet (PM) volume and combine the advantages of in-wheel motor, a novel modular-stator outer-rotor flux-switching permanent-magnet motor (MSOR-FSPM) whose PM volume is half of that in conventional outer-rotor flux-switching permanent-magnet (COR-FSPM) motor is proposed. However, cogging torque and torque ripple of MSOR-FSPM motor are especially worse due to the inherent...
In this paper, a novel 5-phase double-sided C-core modular linear permanent-magnet synchronous machine (MLPMSM) used for the linear steering engine is researched. Firstly, the structure of the MLPMSM is depicted. Then the thrust produced by one module and the total thrust force of the machine are deduced and analyzed. In the ideal condition, all the harmonics in the thrust force can be eliminated...
Modular arc-linear flux-switching permanent-magnet motor (MAL-FSPM) used for scanning system is researched in this paper by the finite element method (FEM). The MAL-FSPM combines characteristics of the flux-switching permanent-magnet motor and linear motor. It can replace the reduction gearbox and kinematic mechanisms and can realize the direct drive and limited angular movement. Structure and torque...
In order to restrain the thrust fluctuation of permanent magnet synchronous linear motor (PMSLM), trapezoidal shaped permanent magnet (TSPM) has been proposed in this paper. Firstly, according to equivalent current method, the flux density analytical equation can be established with the side slope of TSPM as a variable, and the structural parameters of TSPM are obtained in combination with the analytical...
Synchronizing high-harmonics and terahertz-wave spectroscopy (HATS) has been demonstrated as an efficient approach in revealing the information of molecular structure and the underlying electron dynamics. We further investigate the alignment dependent HATS from carbon dioxide at different dual-color relative phases (DRP). We find that the alignment dependence of terahertz generation dose not vary...
This paper presents an improved dual second-order generalized integrator phase-locked loop (DSOGI-PLL) for three-phase systems, for dealing with the non-ideal three-phase grid voltages (e.g. unbalance, harmonics, frequency variation, magnitude variation, etc.) and rejecting the error caused by the DC offset introduced by signal conditioning and A/D conversion in practice, the SOGI used in the proposed...
With the rapid development of power electronic technology in recent years, the damage of harmonics is becoming serious in all power electronic devices. Harmonics is one of the most common indicators of power quality. This article deals with the damage of harmonics, and gives some suggestions for controlling harmonics.
In this paper, an axial-radial flux compound-structure permanent-magnet synchronous machine (CSPMSM) which consists of one axial-flux PMSM and one radial-flux PMSM is investigated. The purpose of this kind of machine is to keep the internal combustion engine (ICE) operating at maximum efficiency by harmonizing its two machines during all driving cycles in hybrid electric vehicle (HEV), and therewith...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.