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.
The tubular linear permanent magnet synchronous motor (TLPMSM) is developed to construct a new oil-well bump system named as linear motor-driven one replacing the normal beam balanced bump system mainly in order to eliminate the damageable steel pole. Its structure is determined based on the real drive demand and the corresponding analysis is given. At last a small prototyped TLPMSM with stator diameter...
This paper illustrates the potential and the convenience of copper-wound electrical machines with liquid nitrogen (LN) cooling. Natural convection heat exchange coefficients in LN are very high. Moreover, the resistivity of copper decreases remarkably at cryogenic temperature, subsequently reducing Joule loss in copper windings. Hence, cryogenic copper-wound electrical machines use less copper to...
This paper describes the characteristics of the 2-pole linear synchronous motor with concentrated magnet arrangement, which consists of two-layer magnet arrays. The upper layer is a main pole composed of two normal excited magnets. The lower layer is composed of three tangentially excited magnets in which the same polarity faces each other. A 3-D boundary integral equation method is applied to the...
This paper describes novel claw-pole movers interior permanent magnets linear synchronous motor (CPIP-LSM). However the cogging of the CPIP-LSM was very large, it was almost 100% of maximum thrust in the initial model. Changing parameters of the CPIP-LSM partially at 1-phase-driven, and using 3-phase-driven the cogging was dramatically decreased. Finally it was confirmed with the high-thrust model,...
The significant drawback of the permanent magnet linear synchronous motor (PMLSM) is force ripples, which are generated by the distortion of the stator flux linkage distributions, cogging forces caused by the interaction of the permanent magnet and the iron core and the end effects. This will deteriorate the performance of the drive system in high precision applications. The PMLSM and its parasitic...
The significant drawback of the permanent magnet linear synchronous motor (PMLSM) is force ripples, which are generated by the distortion of the stator flux linkage distributions, cogging forces caused by the interaction of the permanent magnet and the iron core and the end effects. This will deteriorate the performance of the drive system in high precision applications. The PMLSM and its parasitic...
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.