- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Silicon Carbide Semiconductor Technologies
- Microgrid Control and Optimization
- Energy Harvesting in Wireless Networks
- Wireless Power Transfer Systems
- Power Systems and Renewable Energy
- Photovoltaic System Optimization Techniques
- Induction Heating and Inverter Technology
- Wind Turbine Control Systems
- Innovative Energy Harvesting Technologies
- Wireless Signal Modulation Classification
- Neural Networks and Applications
- Energy Load and Power Forecasting
- Wireless Body Area Networks
- Metamaterials and Metasurfaces Applications
- Thermal Radiation and Cooling Technologies
- Power Quality and Harmonics
- Machine Learning and ELM
- HVDC Systems and Fault Protection
- Solar Thermal and Photovoltaic Systems
Xi'an Jiaotong University
2019-2024
South Valley University
2015-2024
Multilevel inverters (MLIs) have become a trend in the field of DC/AC and one main requirements many industrial applications. MLIs spread academic research replaced conventional due to several advantages that these topologies presented over inverters, as follows. (1) Operate with high number steps output voltage waveform, which helps reducing level harmonics presents fine clear waveforms; furthermore, reduce stress on switching devices gives it long lifetime more reliability. (2) low rating...
Typically, parasitic capacitances exist between the ground and solar panel terminals in grid-connected PV systems. These provide a path for leakage current, which leads to significant safety concerns, observable seriously hazardous harmonic orders aligned with injected grid difficulties. In this research, robust PWM controlling method that used competently reducing level of current improving power quality switched-capacitor Multilevel Inverter. This technique creates developed reference...
This article proposes a single-source nine-level multilevel inverter topology that handles reduced number of components. Moreover, it utilizes the virtual dc sources in terms switched capacitors to reduce active source. Those have self-charging with naturally balancing capability. The proposed can be upgraded 19-level configuration. modification is performed by adding single supply and pair switches. To highlight good features structures, set comparative studies are held other structures...
This paper presents a modified shifted-level pulse width modulation (PWM) for an 11-level multilevel inverter (MLI) that used distributed generation systems and medium high power energy conversion applications because of the flexibility in voltage level this converter has been introduced. employs five independent DC sources to generate eleven output levels considering reduced number switching devices. The proposed control arrange devices synthesize voltage. MMLI structure consisted...
In this paper, we suggest improving the performance of developed activation function-based Deep Learning Long Short-Term Memory (DLLSTM) structures by employing robust loss functions like Mean Absolute Error <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$(MAE)$ </tex-math></inline-formula> and Sum Squared notation="LaTeX">$(SSE)$ to create new classification layers. The layer is last in any DLLSTM neural...
A multi-cell hybrid 21-Level multilevel inverter is proposed in this paper. The topology includes two-unit; an H-bridge cascaded with a modified K-type unit to generate output voltage waveform 21 levels based only on two unequal DC suppliers. topology's advantage lies the fine and clear waveforms high efficiency. Meanwhile, number of generates low level distortion reduces electromagnetic interface (EMI). Moreover, it stress switching devices gives long lifetime. Also, reduction components...
This paper presents a novel hybrid Multilevel Inverter (MLI) system. system consisted of nine-Level MLI unit that is connected back to with developed H-Bridge unit. The combination synthesizes only 10 power switches, two diodes, and four DC supplies generate an output voltage waveform 19 steps. high number steps in the helps produce fine more close sinusoidal shape small amount THD. Also, it reduces stress across switches gives long lifetime, which brings reliability. Moreover, reduced...
This paper presents a new switched-capacitor multi-level inverter (SCMLI) for photovoltaic systems which can eliminate the leakage current. The traditional SCMLI suffer from H-Bridge to obtain negative levels, create variable common mode voltage (CMV) and so generates Here, by direct connection polarity of DC source neutral point grid, it guaranty giving constant CMV then eliminating In this topology, without applying any extra circuit, all capacitors be charged in binary asymmetrical...
This article proposes an improved switched-capacitor multilevel inverter (MLI) that utilizes fewer components. The switched capacitors (SCs) are employed with the dc sources in proposed configuration to minimize number of dc-links structure, which keeps structure compact and combinable. Those enjoy a self-charging susceptibility ability balance naturally. suggested supports expansion process catch up satisfactory output power levels based on slight increase components count. targeted...
This paper presents comprehensive modelling ofWind Energy Conversion System (WECS) based on interfacing a Permanent Magnet Synchronous Generator (PMSG) to the utility grid by using direct AC/AC matrix converter. To estimate wind velocity and extracts maximum power at all velocities Wind speed estimation control technique is presented sliding mode control. Sliding controller has many advantages such as fast transient response robustness against system parametric variations unknown external...
this paper presents a single-phase hybrid structure multilevel inverter (MLI) system. This proposed system used to generate 15-level output voltage waveform. The topology synthesize two DC sources, three chargeable capacitors and 14 switching devices the desired levels. Furthermore; can be extended high number of levels by connecting more than one unit in cascaded connection. nearest level control method has been applied for controlling due its simplicity. presented achieve fine waveforms...
Hybrid renewable energy sources is one of the alternatives solution for increasing generated power either in a standalone farms or grid-tie. This paper presents single-phase 9-level multilevel inverter (MLI) that used hybrid generation systems, medium and high conversion systems especially applications. The structure proposed topology synthesize nine switching devices two asymmetrical to construct inverter. Also system has ability cascaded connection increase level. low THD level output...
With continuous increasing concerns of the energy issues, renewable sources are getting much attention worldwide. This paper presents a full description grid-tie Wind Energy Conversion System (WECS) based on interfacing Permanent Magnet Synchronous Generator (PMSG) to utility grid by using direct AC/AC matrix converter. Due random variation wind velocities, speed estimation control technique is used estimate velocity and extracts maximum power at all velocities. The converter controls point...
This paper proposes a novel 13-level multilevel inverter topology. topology structure synthesizes reduced number of components to produce the desired output levels; only pair DC sources, switched capacitors, and 10 power switches are considered in this configuration. employs capacitors compensate sources for generating voltage levels. reduction has successfully system cost, inverter's waveform reflects low THD level electromagnetic interference (EMI). Those have an online method charging...