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 proposes a dual three-leg voltage source inverter (VSI) based distribution static compensator (DSTAT-COM) to compensate unbalanced and nonlinear loads in three-phase four-wire distribution systems. The proposed topology uses two three-leg inverters having common dc-link with single dc capacitor and an additional small capacitor connected from the negative terminal of VSI to the system neutral...
This paper provides an analytical overview of different impedance sources networks. General classifcation and main properties of different impedance source networks and their modifcations are summarized and presented.
This paper considers one of the methods for controlling the current source inverter, which uses previously generated control signals for the voltage source inverter. Describes the instructional method for converting these signals with minimization of switching losses. Analysis results are verified with simulation modeling of control systems in the software PowerSIM, as well as experimental investigations...
Photovoltaic systems plays an important role as a micro generators. These systems are normally near domestic loads that normally are unbalanced. Thus, a photovoltaic system that also compensates unbalanced loads is proposed. This system is implemented with a four leg voltage source inverter connected to the AC mains with accessible neutral. In order to control the AC currents a space vector based...
Solar energy is available in abundance and it is one of the most promising Renewable Energy Sources (RES) that can be used to produce electricity through Photovoltaic (PV) energy conversion process. Grid connected solar PV system is attracting more popularity due to the progress in the field of Power Electronic Converters (PEC) and various new control techniques. Different control techniques are used...
This paper integrates a suitable controller in DC-bus voltage regulation loop of the direct current control (DCC) algorithm for three-phase grid-connected PV system. The proposed controller named fractional order PI (FO-PI) controller adjust the integration order from integer to real value. The FO-PI controller provides a faster settling time and stands the parameters variation and the external disturbances...
Applications of motor drives, ranging from automotive traction to more-electric aircraft, have widely varying speed and torque demands. With extensive use of inverter-fed drives, loss minimization techniques for such applications have evolved over the past few decades. Previous work on loss minimization has mainly focused on specific drive components. Component-level loss minimization, however, will...
The design and implementation of a voltage source inverter (VSI) is presented to emulate similar characteristics of an autonomous diesel generator for using as an emulator for microgrids. The mechanical and electrical parts of a commercial diesel engine generator are modeled mathematically and then the model is fed to a VSI as reference signals to produce the same output power characteristics as in...
This paper presents real time implementation of DSP based PWM control algorithm for 3 phase 4-leg IGBT voltage source inverter. This method is also useful for application in voltage source inverters for adjustable-speed ac drives. PWM method is used to reduce the harmonic content in the output voltage applied to induction motor. The pulses were generated using Texas Instruments TMS 320F28335 DSP controller...
Dead time elimination of voltage source inverters (VSI) becomes critical for modern current controlled applications with increased requirements regarding the magnitude accuracy and harmonic distortion of an output waveform. Recently many approaches are used to compensate the dead time both in open or close loop control systems. All these schemes require additional circuits or computational effort...
Renewable energy sources entail the power electronics inverters are the orbit of research objectives for optimum operation. Two commonly used inverters exist; the current source inverters (CSI) and the voltage source inverters (VSI). The first one supports only the boost capability and the other supports the buck capability, but due to the high variation of the output voltage of these renewable energy...
In this paper space vector model of a fifteen-phase voltage source inverter (VSI) is presented. The space vector Pulse Width Modulation (SVPWM) of a fifteen-phase voltage source inverter (VSI) with the aim of producing sinusoidal output waveform, is illustrated. Generalized space vector theory is used to model the inverter and the SVPWM. As per the general inverter switching theory there are 215 =...
This paper presents a simple carrier-based PWM (CBPWM) technique to control a three-phase to five-phase matrix converter (3×5 MC). The proposed technique is based on the indirect configuration of the matrix converter in which the three to five-phase matrix converter is modeled as three-phase rectifier followed by a five-phase inverter. With this representation, CBPWM technique is suggested to control...
This paper proposes an approach to detect the open-circuit faults in a five-phase voltage source inverter. The inverter is modulated with space vector PWM. However, the proposed approach is independent of the modulation technique. The open-circuit faults under study are single transistor open-circuit, single inverter switch open-circuit, double-transistors open-circuit, double-switches open-circuit,...
This paper introduces a new three phase quasi resonant DC link soft switching inverter. The auxiliary circuit of the proposed inverter has two auxiliary switches. Two auxiliary switches operate at soft switching condition. Furthermore, all diodes of the auxiliary circuit operate under soft switching condition. The auxiliary circuit is used to provide zero voltage switching condition (ZVS) for the...
The ability of an electrical drive to continue operation without tripping in spite of short-duration voltage sags or power supply interruptions is known as power failure ride-through capability. Critical production processes in industries require the drives to smoothly ride-through during momentary power interruptions. The reliability of the drive is dependent on the maximum duration for which a total...
Space vector modulated voltage-source inverters require an overmodulation algorithm for continuous control of line-side voltage during overmodulation and for a smooth transition from PWM to six-step mode. Overmodulation increases the dc bus utilisation of a voltage source inverter, but requires significantly higher computational effort than linear modulation. This paper proposes a novel single-zone...
The penetration of solar Photo Voltaic (PV) systems to the grid is gradually being increased as an alternative to conventional energy sources. The interfacing of solar PV systems to the grid requires efficient control strategies for the operation, control and Power Quality (PQ) improvement. This paper proposes a three-level Hysteresis Current Control (HCC) strategy for grid connected four leg Voltage...
Due to the focus on clean and green environment, the interest on electrification of existing transportation system is increasing. In Hybrid Electric Vehicle (HEV), the "idle-stop" and hence fuel economy is achieved by using integrated starter generator (ISG). This paper discusses the comparative evaluation of active bidirectional converter based ISG and passive quasi-Z source inverter (qZSI)...
This paper focuses on modelling and simulation of a single phase grid connected photovoltaic (PV) system using Matlab/Simulink software. The PV system is interfaced with the grid by a single phase voltage source inverter (VSI). A maximum power point tracking (MPPT) controller is designed to draw maximum power from the PV array. The DC-DC boost converter carries out the task of MPP tracking and amplifies...
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.