Rajasthan Technical University

About: Rajasthan Technical University is a education organization based out in Kota, Rajasthan, India. It is known for research contribution in the topics: Photovoltaic system & PID controller. The organization has 716 authors who have published 1084 publications receiving 4530 citations. The organization is also known as: RTU.

Field Oriented Control of PMSM during Regenerative Braking

Abstract: The high efficiency, compactness, high torque to inertia ratio, etc features has made the use of PMSM drive most suitable for electric vehicles. In this paper, the simulation of PMSM is done in braking mode with the implementation of Field oriented control. The implementation of Field oriented control controls the bidirectional power conversion of inverter for its operation in motoring and braking mode. In this system, the energy is directly fed back to the battery of 1.8 KW which is initially 80% charged. This system does not involve the use of any additional converters which increases the efficiency of the system to a great extent. This energy which is fed back to the energy storage system (Battery) during braking mode is a must for hybrid and plug-in vehicles for increasing their travel range and overall efficiency of the system.

Optimistic Use of DSTATCOM Controlled Battery Energy Storage System to Mitigate Grid Disturbances with Solar Energy Penetration

Abstract: Level of solar energy penetration in network of utilities is continuously increasing and reached to a significant level in recent years. Power electronics based converters which are used for interfacing solar photovoltaic (PV) plants to power system networks of utilities are non-linear in nature. Any disturbance developed in the network affects system parameters and power flow due to non-linearity of the system. Hence, suitable action is needed to minimize the effects of disturbance to improve the performance of network when solar energy is integrated. A method to minimize effects of grid disturbances on the performance of utility network with solar energy penetration is presented in this manuscript. This is achieved using Distribution static compensator (DSTATCOM) supported by energy storage in a battery. Synchronous reference frame theory is used to achieve control of the DSTATCOM. A test system with five buses, a generator, loads and one solar PV system of 100 kW has been used to establish the effectiveness of the proposed method.

ACOPF-Based Transmission Network Expansion Planning Using Grey Wolf Optimization Algorithm.

Abstract: Transmission network expansion planning problem (TNEP) is extensive, complicated, nonlinear programmable issue. A cost-effective result of TNEP is required to get the power generation pattern with load demand in economical and reliable manner. In this paper, AC optimal power flow-based TNEP is solved using a recent nature-inspired algorithm, namely grey wolf optimization algorithm (GWO). The GWO is tested to this TNEP for solution of six bus Graver’s system and 24 bus IEEE system. The reported outcomes reveal that GWO is cost-effective and more accurate strategy to solve this TNEP.

Modeling of a high-performance multimode interference optical switch using reconfigurable image modulated region

Abstract: Modeling and detailed performance analysis is carried out to realize a multimode interferometer optical switch by inserting an appropri- ate image-modulated (IM) region. The concept of self-imaging character- istics of multimode waveguides has been utilized in order to drive the designed device as a photonic switch. Transition losses in the waveguides of the structure are maintained at low levels by selecting appropriate dimensions to increase overall performance of the switch. It has been observed that by inserting an additional IM region, switching losses and corresponding crosstalk levels can be reduced significantly. The device performance is checked for a wider range of index variation in the IM region with respect to other regions for a test wavelengh of 1.55 μm. With rigorous and repetitive simulation, a crosstalk level better than −22.2 dB for either case of polarization state (transverse electric and transverse magnetic) of input has been achieved. The design also possesses a design tolerance in the range of � 0.25 to � 0.5 μm, within which variation in the imaging length and its subsequent adverse effects on device performance remains less than 1.5%. © 2012 Society of Photo-Optical

Performance Analysis of Self Excited Induction Generator Using Artificial Bee Colony Algorithm

Abstract: This paper presents the steady state analysis of self-excited induction generator (SEIG) using novel Artificial Bee Colony (ABC) optimization technique. The proposed ABC algorithm is used to minimize the total admittance of the induction machine to get frequency and magnetizing reactance corresponding to any rotor speed, load impedance and excitation capacitance. Optimized parameters obtained are applied to determine the performance of SEIG. The results obtained by ABC algorithm is compared with results from numerical method. The results obtained coincide with the numerical method results. This technique proves to be efficient in solving nonlinear constrained optimization problems and analyzing the performance of SEIG.