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Showing 1 to 19 of 19 for “"Cascaded H-bridge"”.
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Integration of energy storage components with cascaded H-bridge multilevel converters
… topologies: diode-clamped, flying-capacitor, and cascaded H-bridge. A cascaded H-bridge multilevel converter is created when several H-bridge cells are placed in series. Each H-bridge cell must be fed by a stiff voltage source. In earlier implementations, every one of these voltage sources had to …
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Comparative Study of Power Semiconductor Devices in a Multilevel Cascaded H-Bridge Inverter
… the performance of a nine-level transformerless cascaded H-bridge (CHB) inverter with integrated battery energy storage system (BESS) using SiC power MOSFETs and Si IGBTs. Two crucial performance drivers for inverter applications are power loss and efficiency. Both of these are investigated in …
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Performance Evaluation of a Cascaded H-Bridge Multi Level Inverter Fed BLDC Motor Drive in an Electric Vehicle
The automobile industry is moving fast towards Electric Vehicles (EV); however this paradigm shift is currently making its smooth transition through the phase of Hybrid Electric Vehicles. There is an ever-growing need for integration of hybrid energy sources especially for vehicular applications. …
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A Pseudo-Binary Cascaded H-bridge Converter for Solid-State Transformer Applications and Modulation Techniques for the Minimization of the Common-Mode Voltage
… cable requirements. Among these topologies, the cascaded H-bridge (CHB) has been extensively used in the industry for MV-high-power applications because of its cost and efficiency in this operation range. Thus, it is one of the prevalent topologies for MV solid-state transformers (SSTs) The …
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Addressing control and capacitor voltage regulation challenges in multilevel power electronic converters
… the capacitor voltage regulation constraints in cascaded H-bridge multilevel converters with a staircase output voltage waveform. In the proposed method, the harmonic elimination technique is used to determine the switching angles. A constraint was then derived to identify modulation those …
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Medium voltage petrochemical drives : soft start and adjustable speed systems
… feasibility study illustrates that new VSI Cascaded H Bridge (CHB) technology and the application concept is economically feasible. Ultimately the research illustrates how and where new VSI technology can economically be applied with a significantly lower risk level.
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Harmonic reduction of a single-phase multilevel inverter using genetic algorithm and particle swarm optimization
… among the diode-clamped, capacitor clamped and cascaded H-bridge multilevel inverter to be used for standalone application in term of total harmonics distortion and voltage boosting capability. The first part of research that is identify best topology multilevel inverter is applying sinusoidal …
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A Synchronous Distributed Control and Communication Network for High-Frequency SiC-Based Modular Power Converters
… SiC-based impedance measurement unit (IMU) with cascaded H-bridge PEBBs. An improved synchronization method with additional analog circuits is further implemented and verified with sub-ns synchronization accuracy.
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Modelling and real-time simulation of a modular bidirectional solid-state transformer for ultra-fast charging of electric vehicles
… two-stage power conversion solution with a Cascaded H-Bridge (CHB) rectification stage followed by a Dual Active Bridge (DAB) conversion stage. Control strategies and modulation schemes are implemented to achieve voltage balance and unity power factor, and to mitigate current harmonics and …
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Harmonic elimination by switching angle optimization technique for multilevel inverter
… applications. In this project, a 7-level Cascaded H-Bridge Multilevel Inverter (CHBMLI) with two various controllers are presented. Proportional Integral (PI) and Artificial Neural Network (ANN) controllers are used to improve the performance of output voltage and a low level of total …
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Development of current control for three phase multilevel inverter
… open loop test and closed loop test. Two stages cascaded H bridge are created in which it uses 12 PWM signals for the switching scheme. PWM signals are generated by comparing a sine wave and triangular wave. Switching frequency for this project is chosen to be at audible range of 20kHz. PI …
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Control, analysis, and design of distributed inverter systems
… This method is applied to series connected H-bridge inverters which interface a distributed system of dc sources to an ac load. The resulting system can employ a very low switching frequency and small output filter while maintaining a low distortion ac output. A control system is developed …
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Advanced Assessment of Inverter-based Resources-Storage Technologies on Modern Electric Grids in terms of Power Profiling, Ancillary Services, and Transient Stability
… improvements through filter-less multilevel Cascaded H-bridge (CHB) inverters utilizing high-frequency Gallium Nitride (GaN) switches. This approach demonstrates improved power conversion efficiency and reduced total harmonic distortion (THD). To support decentralized operation, a novel …
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Symmetric and asymmetric multilevel inverter topologies with reduced number of switching devices structure for high power density achievement
… multilevel inverter (SMLI) topology and cascaded H-bridge (CHB) structure when higher output voltage level is considered. A 5-level RNSD structure is proposed as a circuit configuration for symmetric (5-level) and asymmetric (7-level and 9-level) multilevel inverters (MLIs). For switching …
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Investigations of New Fault-Tolerant Methods for Multilevel Inverters
… applications.</p> <p>Another novel hybrid cascaded H-bridge (CHB), known as the X-CHB, for a fault-tolerant operation is proposed in this dissertation. It ensures seamless operation of the system under an open/short circuit switching fault or dc supply fault.</p>
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Investigating Impact of Emerging Medium-Voltage SiC MOSFETs on Medium-Voltage High-Power Applications
… and high-power range. For this purpose the cascaded H-bridge, the modular multilevel converter and the 5-L active neutral point clamped converters are designed at 4.16-, 6.9- and 13.8 kV voltage ratings and 3- and 5 MVA power ratings. Selection of different voltage and power levels is done …
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New Three Phase Photovoltaic Energy Harvesting System for Generation of Balanced Voltages in Presence of Partial Shading, Module Mismatch, and Unequal Maximum Power Points
… balanced three-phase power into the grid using a Cascaded H-Bridge (CHB) converter topology which brings together the entire system and results in the final proposed PV power system. The developed grid connected PV solar system is evaluated using simulations under realistic dynamic ambient …
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Identification of small-signal dq impedances of power electronics converters via single-phase wide-bandwidth injection
… shunt current injection converter based on cascaded H-bridge topology. Special attention is given toward the selection of inductors and capacitors, trying to optimize the selected component values and fully utilize operating range of the converter. The proposed control is extensively …