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Boost-derived hybrid converter (BDHC) is a single-stage converter that produces both dc and ac output voltages. The operation of BDHC under continuous conduction mode is satisfactory. However, the nonzero discontinuous conduction mode (NZ-DCM) and standalone ac operation restrict the stable operation of the converter. To mitigate these limitations, modified BDHC (MBDHC) is proposed in this paper....
Ultra sparse matrix converter(USMC) is a derived form of Indirect matrix converter(IMC) having less no of switches. Though it has unidirectional power flow capability it is very useful for specific applications such as wind energy systems, electrohydrostatic actuator, variable speed drives etc. However its main limitation is lower gain for which various control strategies and topological changes had...
Dual output converter are proposed in different literature. These converters has potential to supply AC and DC load simultaneously. But standalone operation and DCM phenomenon presence is the problem of converter in initial proposals. However, both these problems are counteract by introduction of antiparallel switch in Modified hybrid L-ZSI(MHLZSI). With this modification, the control technique is...
Dua\ output hybrid converter supplying DC and AC loads simultaneously are gaining interest due to their compact size. This is due to single stage conversion that results in cost saving and offers decoupled control of both AC and DC output. Though hybrid converter derived from boost was reported, they were unable to supply lower DC output. The hybrid converter proposed in this paper is able to supply...
Accurate knowledge of magnetic field distribution of a machine is essential aspect for its design. Magnetic flux density is useful for estimation of machine performance such as induced voltage, cogging force/torque, force/torque, and flux weakening capability of the machine. Moreover, it is also helpful for performance prediction and optimization. In this paper analytically no load magnetic fields...
Matrix converters became very popular over AC-DC-AC converters for AC to AC conversion because of their beauty having no dc link capacitor. The gain of these converter can be varied only in the range of 0–86.6% of input voltage. This restricts its operation in high voltage application and also in grid integration. To enhance the boosting capability beyond the earlier one, this paper implements a switched...
This paper presents no load magnetic field analysis of a double-sided linear tubular permanent magnet machine (DSLTPM) with a radially magnetized permanent magnet mover and iron-cored stator winding by using analytical method. Knowledge of magnetic field distribution inside the machine is essential for optimal design of machine. The field distribution is obtained by use of magnetic vector potential...
Generating DC and AC voltage from a single DC input, through single stage conversion is cardinal for nanogrid applications. A boost derived hybrid converter is one of the topology used for nanogrid application, which works well in continuous mode of operation rendering both the dc and ac load simultaneously. Despite of this converters successful performance in continuous conduction mode, undesirable...
This paper deals with the investigation of the Extended Kalman Filter (EKF) for sensorless indirect vector control of an induction motor. The prime focus is low speed operation, when the EKF somewhat presents erroneous results. The effectiveness of the EKF as a speed estimator under machine parameter variations - change in stator resistance, rotor resistance is assessed. Furthermore, the effect of...
Boosting factor of power converter is a critical requirement for high voltage low power applications. There are many extended DC-DC converter topologies available for boosting output voltage beyond the traditional boost converters. However, for direct AC-AC conversion boosting factor of four can be achieved using single inductive element or impedance source network. Though higher boosting beyond this...
Presently, the Hybrid Electric Vehicle(HEV) industry is driven by the battery technology and its power management. For charging the batteries there is requirement of Permanent magnet synchronous generator (PMSG) and power converters. The authors in this paper are exploring the prospects of multiple/dual stator PMSG instead of single PMSG. The interconnection of multiple PMSGs using Matrix of switches...
Rapid prototype controller is a very useful part in the process of analyzing a designed system. Its ability to figure out faults and quickly rectify them makes it quiet interesting. This paper focuses on interfacing the simulation model to the real time world, to develop signal conditioning circuits between high power load or intelligent power module (IPM) with the low power digital controller platform...
This paper deals with dynamic simulation of a directly driven Permanent Magnet Synchronous Generator (PMSG) with a full scale converter interfaced to the grid. A comparative assessment of two control strategies is the main focus of this paper. The first is the SVM based voltage oriented control strategy and the second is the hysteresis current control strategy. Maximum power point tracking and pitch...
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