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.
This paper introduces an alternative pathway to designing an efficient interior permanent magnet machine (IPMM) for direct–drive (D-D) wind energy applications. It analyzes the design optimization methodology in great detail, employing multiple experimental verifications to acutely pinpoint the most desirable and feasible format. The focal objectives of minimizing cogging torque, torque ripple, and...
The overall efficiency of a marine electrical power system is reliant on its condition monitoring algorithm. A competitive system has quick fault detection functionalities and maintenance enabled. This paper examines existing method to develop an online approach for superior detection of eccentricity fault in surface-mounted permanent magnet synchronous motors, in a marine propulsion setting. Detection...
Condition monitoring of marine propulsion motors is important in improving the overall reliability of a marine electrical power system. The focus of this research is to accurately model and diagnose the local demagnetization fault in a Surface mount Permanent Magnet Synchronous Motors (SPMM). The techniques used here for fault detection is based on time-frequency based signal analysis mainly Hilbert...
A marine electrical power systems fate in terms of its quality and maintenance heavily relies on the efficiency of its fault detection. This paper analyses and develops an online approach to detecting winding and demagnetization faults in surface-mounted permanent magnet synchronous motor (SPMM) in a marine propulsion setting. The proposed methodology uses search coils to determine faults that reveals...
Fault analysis of marine generators is paramount to improve reliability and accessibility of a marine electrical power system. Inter-turns fault is presumably the most common fault in a PMSM and the symptoms associated with this fault in many machines are undetectable, depending on the level of fault. This paper proposes a novel method to use search coils to determine the inter-turns fault in a Surface...
This paper compares the distributed winding and concentrated winding IPMSMs designed for direct-drive wind turbine. Apart from different stator winding configuration, the two IPMSMs have identical rotor and stator dimensions, air gap length, magnet length and stack length. The paper also discusses various techniques that were applied to minimize the cogging torque and torque ripple.
In a small to medium scale PV inverter system, energy storage functionality such as battery is significant to ensure the obtained energy is efficiently stored, used and delivered to the load. As for the grid-connected system, having a bidirectional power flow in the system is an advantage in case the power from the PV array is insufficient to fulfill the demand from the load. The grid power can also...
This paper presents a systematic design process for an interior permanent magnet machines (IPMM) containing distributed and concentrated windings in the stator and flat shaped and a v-shaped magnets in the rotor. The machine was designed with large pole numbers suitable for low speed application such as direct drive wind turbine. The paper also presents a comprehensive comparison of performances between...
This paper presents a systematic design comparison of an interior permanent magnet machine (IPMM) with a flat shaped and a V-shaped magnet rotor structure applicable for direct drive wind turbine. It also discusses various steps that were taken to minimize the cogging torque, torque ripple and the overall size of the machine using two dimensional finite element (FE) analysis. The torque ripple and...
The paper presents a systematic design optimization process of a 4kW interior permanent magnet machine (IPMM) with distributed windings (DW) for low speed applications. The paper discusses various steps that were taken to minimize the cogging torque, torque ripple and the overall size of the machine. The design optimization was conducted using two-dimensional finite element analysis (CEDRAT FLUX 2D).
The aim of this paper is to explore the various dynamic controllers to enhance the fault ride-through (FRT) of doubly-fed induction generators (DFIGs). A wind farm of total capacity 9 MW is considered for the study. The flexible AC transmission system (FACTS) controllers like Static Synchronous Compensators (STATCOM) and Unified Power Flow Controllers (UPFC) are modelled and analysed to study their...
A review of the direct drive permanent magnet generator technologies for wind energy is carried out in the paper. A preliminary study of the V-shaped interior permanent magnet (IPM) machine for application as the direct drive wind-power generator was also conducted. The air-gap flux density of this type of IPM machine has been studied which shows that by optimizing V angle, high air-gap flux density...
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.