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.
A high-gain non-isolated DC-DC converter is proposed with a inversely coupled inductor and a voltage lift cell. Energy stored in the leakage inductance of the coupled inductor is recycled through a voltage lift cell to obtain high voltage conversion ratio. The operation of the proposed converter is explained using its equivalent circuits which are used to derive static gain expression. The operation...
In this paper, an on-board integrated battery charger based on central-tapped winding switched reluctance motor of electric vehicle is presented. All the components used for driving mode are employed in the charging process, and there is no need for hardware reconfiguration between charging and driving modes of operation. The solution can be connected directly to single-phase grid to perform charging...
The multilevel converter is a prospective topology for both Medium Voltage and High Voltage Direct Current (HVDC) applications. In high power application, the forward topology is applied to increase the power region. In this paper, a novel forward-mode five-level inverter is presented which combines the features of the conventional multilevel converters and forward topology. The converters can transfer...
A single stage high gain Buck-Boost inverter (BBI) for photovoltaic application is proposed in this paper. The proposed topology is with simple circuit and low switch count. The three-winding tapped inductor is applied to attain high gain feature. One-cycle control (OCC) is adopted to obtain superior source ripple rejection. The paper presents the detail operation principle of the proposed topology,...
In DC-biased sinusoidal current vernier reluctance machines (DC-biased-VRMs), the DC exciting winding and AC armature winding are integrated into one single winding. Therefore, the copper loss can be reduced with torque density increasing, and only one set of power electronic converter is demanded. This paper is to propose a DC-biased-VRMs drive with asymmetrical power electronics devices and corresponding...
This paper proposed an unequal zero voltage vector distribution modulation strategy to suppress the zero-sequence current of five-phase open-winding fault-tolerant fractional-slot concentrated-winding interior-permanent-magnet (FTFSCW-IPM) motor driving system with common DC bus. Compared with the conventional eliminating common-mode voltage vectors modulation strategy, this method can well suppress...
This paper proposes a multilevel open-end six-phase motor drive. The system is composed of six isolated three-leg inverters and is adequate for high-power systems with voltage rating restrictions. The system model and a simple space vector pulse-width modulation (PWM) based on three similar individual planes are presented. Specific voltage vector application sequences that reduce the stator voltages...
This paper presents a novel tubular flux-reversal transverse flux permanent magnet linear machine (FR-TFPMLM), in which both magnet and armature winding are located at the short primary side whereas the secondary side is composed of only magnetic steel. This configuration is typically used in long stroke applications to save magnet material. With different configurations of phase winding, the machine...
This paper develops an analytical model to study the performance of dual-wound three-phase surface permanent magnet synchronous machines under normal operating conditions and various fault scenarios. A generic analytical model of inductance calculation is developed considering multiple layers of coils in the stator slots for different slot-pole combinations. The performance of three dual-wound machine...
In conventional arrangements of three-phase LLC converters, there are at least three magnetic components that occupy a considerable volume and mass of the power converter. Although, the three-phase LLC topology has many advantages over the single-phase one, circuit designers tend to select the single-phase topology because it has a minimal number of magnetic components. In this paper, with the purpose...
This work studies three-phase four-wire dynamic voltage restorers (DVRs) based on a cascade of open-end winding transformers. The possible proposed topologies can be observed if each transformer set is connected to the conventional two-level (2L) three-phase four leg converters and two dc-links per stage. However, in this paper particular/intermediate solutions are also considered by means of the...
In this paper, a new hybrid multilevel six-phase machine drive system topology is proposed and investigated. Such topology is composed of two three-level three-phase neutral-point-clamped (NPC) inverters and a traditional two-level three-phase voltage source inverter (VSI) with isolated DC-links feeding the open-end windings (OEW) of a six-phase induction motor (SPIM). The system model, operating...
The novel doubly salient slot permanent magnet linear machines (DSSPMLMs) are proposed in this paper. First, the topology and geometric parameters of the DSSPMLMs with 12 slots are introduced, and the corresponding basic operating principle is investigated. Then, feasible slot/pole combinations and winding configurations are further analyzed. To the DSSPMLMs with 12 slots, all structures with 10/11/13/14...
The objective of this paper is to investigate the electromagnetic design aspects of a novel flux-switching motor-compressor with rotor poles designed as airfoils to perform compression. The proposed novel flux-switching motor-compressor is both an electric motor as well as an axial-flow compressor. Conventional motor-driven compressor system typically requires an electric motor and a gear box to connect...
Since the vernier machine (VM) is a flux modulation machine that also operates simultaneously as a synchronous machine, the torque producing mechanism of this device is difficult to understand. This paper begins with an analytical study of a synchronous permanent magnet (PM) machine, where the back-emf and torque are derived based on a generic number of slots per pole per phase stator. Numerical comparison...
A modular multilevel converter (MMC) configuration is presented as a medium-voltage high-power drive for variable-speed applications incorporating symmetrical six-phase machines. The topology employs six standard MMC phase-legs feeding two isolated groups of three-phase machine windings, each with 60° spatial phase-displacement. A novel concept of ripple-power decoupling between adjacent sub-modules...
One main advantage of three-phase LLC converters for high power applications is their full-load efficiency. However, issues with light load operation (i.e. low efficiency) requires investigation. In this paper, a new modulation strategy is proposed to improve the light load efficiency of three-phase LLC converters to achieve a better efficiency curve. The proposed strategy uses two different modulation...
This paper proposes a four-phase mutually coupled switched reluctance machine (MCSRM) arrangement with single pulse current control strategy, targeting performance improvements of both the machine and the power converter. Previously published works on MCSRM have focused only on machine performance while neglecting the power converters. Designs and comparative studies have been carried out among conventional...
This paper compares some performances of a six-phase switched reluctance motor (SRM) using asymmetrical half bridge (AHB) converter and m-switch converter. The topologies and characteristics of the two converters are firstly analyzed. The steady-state torque, current and voltage waveforms of SRM using the two converters are performed and compared under the same operation conditions. Simulation results...
In single-phase photovoltaic (PV) systems, power mismatching between input and output terminal leads to power pulsation, seriously affecting maximum power point tracking (MPPT). Paralleling an electrolytic capacitor (e-cap) across PV panel to smooth power pulsation seems to be an unreliable method owing to its short lifetime. Various power decoupling methods used in micro-inverters have been proposed...
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.