I am Uvesh Sipai

Doctor of Philosophy (Ph.D.)

Microgrid

Marwadi University, Rajkot

Persuing research work on Microgrid at research laboratory of Marwadi University under expert guidance of Prof. (Dr.) R. B. Jadeja. During July 2019 - August 2019 received scholarship for Exchange of PhD Candidates and Academic Staff at Lodz University of Technology, Poland.

Master of Technology (M.Tech.)

Power Electronics, Machine & Drives

Nirma University, Ahmedabad

Completed M.Tech in Power Electronics, Machine & Drives with 8.9 CPI (84%). Nirma University had awarded the Gold Medal for securing the first rank with during M.Tech in Power Electronics Machine and Drives. During postgraduation worked on hardware project on 'Implimentation of Close-loop Control of Five-level Neutral-point Clamped Inverter for DC-link Capacitor Voltage Balancing' under expert guidance of Prof. (Dr.) P. N. Tekwani.

Batchlore Engineering (B.E.)

Electrical Engineering

Marwadi Education Foundation's Group of Institutions, Rajkot

Completed B.E. in Electrical Engineering with 9.03 CGPA (85.3%). During graduation worked on many projects with major focus on, Active and Reactive Power Control of Grid Connected Distributed Generation System' under expert guidance of Dr. Priyesh Chauhan.

International Scholarship

Exchange of PhD Candidates and Academic Staff

Lodz University of Technology, Poland

Received scholarship within the project carried out under the PROM Programme – International Scholarship Exchange of PHD Candidates and Academic Staff, co-financed granted from the European Union, including the European Social Fund within the framework of the Knowledge Education Development Operational Programme, non-competitive project entitled: International Scholarship Exchange of PhD Candidates and Academic Staff,

Gold Medal

M.Tech in Power Electronics, Machines & Drives

Nirma University, Ahmedabad

Nirma University had awarded the Gold Medal for securing the first rank with during M.Tech in Power Electronics Machine and Drives.

Best Student Volunteer Award

IEEE Gujarat Section

Certified by IEEE Gujarat Section for ‘Outstanding contribution as student volunteer’ at IEEE student branch Marwadi Education Foundation, Rajkot.

Project

Microgrid

Marwadi University, Rajkot

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Research Paper

Capacitor Voltage Balancing for Five-Level Neutral-Point Clamped Inverter using Modified Carrier Waves for Carrier-Based PWM Technique

2019 IEEE 16th India Council International Conference (INDICON)

Multilevel inverter (MLI) are now mostly preferred topology for high-power medium-voltage induction motor drives. From various available topology of multi-level inverter neutral-point clamped (NPC) is widely preferred due to its simplicity and inherent advantages. NPC mainly have a problem of fluctuating neutral-point potential (NPP), which leads to severe problem like increase in total harmonics distortion (THD) and increase in voltage stress of the power semiconductor switches. This paper focused towards the capacitor voltage balancing in five-level NPC with use of phase-disposed pulse width modulation technique (PD-PWM). An analysis of effects of various offset in carrier waves on capacitor voltages is analyzed, by use of band detector close-loop control is done and based on band detection various offset value is added in carrier waves to reduce the discrepancy in capacitor voltages.

DOI: 10.1109/INDICON47234.2019.9028994

Research Paper

Harmonic Current Signal Injection based Grid Impedance Measurement Technique for Active Harmonic Filter

Lecture Note, Springer Singapore

At present, the main issue faced in practical application of active harmonic filter with LCL filter is the protection of AHF due to the resonance condition which is attained unintentionally in the process of removing harmonic and improving power quality. At resonance condition, voltage or current magnification takes place which results in failure of components connected in active harmonic filters. In addition to this, voltage fluctuation occurs for parallel-connected appliances, which results in poor power quality and makes system less reliable. In this work, a noninvasive signal injection method known as harmonic current signal injection method is implemented. The method determines grid impedance in order to avoid resonance conditions in the AHF application. The method uses the existing setup of AHF for measurement of impedance of the grid, thus eliminating the need of additional hardware for determination of impedance. This method is simulated in PSIM and validated under different values of grid impedance.

DOI: 10.1007/978-981-32-9578-0_15

Research Paper

Implementation and Fabrication of Power Factor Corrector Using DC-DC Converte

2017 International Conference on Energy, Communication, Data Analytics and Soft Computing (ICECDS)

The increasing growth in the use of electronic equipment in recent years leads to wide use of DC-DC converter. For feeding DC load, regulated DC power is obtained from switch mode DC-DC converter. Normally in AC-DC conversion current drawn from the input ac supply is in form of narrow pulses. This narrow pulse current of high peak results in power quality issues, which include higher value of THD in supply current, lower value of power factor. The Single ended primary inductance converter (SEPIC) is a dc/dc -converter topology that provides positive regulated output voltage from an input voltage that varies from above to below the output voltage. To improve source side power factor, DC-DC converter with power factor correction algorithm implemented.

DOI: 10.1109/ICECDS.2017.8389733

Research Paper

Active and Reactive Power Control of Grid Connected Distributed Generation System

2017 Second International Conference on Electrical, Computer and Communication Technologies (ICECCT)

This paper presents work related to management of active and reactive power exchange between a distributed generation (DG) source and the grid to which it is connected; for improved utilization of electricity generated by the DG source such as solar energy. This is based on the recently introduced Availability Based Tariff (ABT) concept for the consumer loads, where conventional power grid is available. In situations, when, the grid power is available at high cost during high electrical tariff, the locally generated power from solar is utilized for consumer loads or even excess power can be fed back to the grid in order to earn financial benefits. On the other hand, during low electrical tariff, power generated is utilized for consumer loads or to charge batteries. Such system can also be utilized as Ancillary services for reactive power compensation, voltage control, loss compensation, energy imbalance etc.

DOI: 10.1109/ICECCT.2017.8118019

Participation

Exchange of PhD Candidates and Academic Staff

Lodz University of Technology, Poland

Received scholarship within the project carried out under the PROM Programme – International Scholarship Exchange of PHD Candidates and Academic Staff, co-financed granted from the European Union, including the European Social Fund within the framework of the Knowledge Education Development Operational Programme, non-competitive project entitled: International Scholarship Exchange of PhD Candidates and Academic Staff,

Gold Medal

M.Tech in Power Electronics, Machines & Drives

Nirma University, Ahmedabad

Nirma University had awarded the Gold Medal for securing the first rank with during M.Tech in Power Electronics Machine and Drives.

Best Student Volunteer Award

IEEE Gujarat Section

Certified by IEEE Gujarat Section for ‘Outstanding contribution as student volunteer’ at IEEE student branch Marwadi Education Foundation, Rajkot.