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A current resonant converter including wider input voltage range and higher power density is required for various applications. However, in our study, it has been found that the drastic increasing of the transformer winding loss becomes a severe problem. This paper clarifies the mechanism of transformer winding loss occurrence and proposes the different resonant mode operation which solves the problem...
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 non-isolated high step-up DC-DC converter with coupled inductor is developed for large voltage gain applications such as electric mobility and renewable energies. This converter combines the concepts of magnetic integration and interleaving phases that are effective for downsizing of power converters. The developed converter offers a good performance of voltage gain vs. converter size, because,...
This paper proposes a novel Interleaved Series Input Parallel Output Active Clump Forward (ISIPO-ACF) converter with integrated magnetic components that might achieve high power density. This converter is suitable for high input voltage and high output current applications such as dc-dc converters of EVs and HEVs. In this paper, the superiority of that in term of size and losses of the magnetic components...
This paper proposes a new variable field wind generator with soft magnetic composite material and the basic theories were presented. Basically, the overlapping of the two magnetic fields is applied to its machine operation. The fundamental theory of the new wind generator is the same as traditional generators. Its bias of magnetic fields and two stator partitions increase iron and copper losses. Soft...
Magnetic circuit is a powerful tool in the design of power transformers, especially for a priori evaluation of leakage and magnetizing inductance before actual production of the components. This paper investigates an alternative modeling approach using PSIM magnetic circuit library to remove duality transformation used in a conventional reluctance model and establishes formula to determine the permeance-capacitors...
A circulation pump is an integrated unit, consisting of a hydraulic part for transmitting energy to the medium and a driving canned electric motor. Circulation pumps are used in residential and office buildings as well as in production and storage halls for the transport of heating or cooling water. More than 140 million circulation pumps are installed in Europe alone. Due to this high number of pumps...
Interleaved Multi-phase DC/DC Converters (IMDDC) with Integrated Magnetic Components (IMC) are well-known as one of the converter topologies that can achieve high-power-density. However, as one of the drawbacks of IMDDCs, the power conversion efficiency when all phases are driven may decrease between light and middle loads. The main causes of the efficiency reduction are non-load losses caused by...
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