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Novel dc-dc converters with a single input and multiple outputs has been proposed in this paper. The features of the proposed topology are (a) reduced part count leading to compact and lightweight circuit, (c) high voltage gain, (d) single input double output, (e) low ripple in the input as well as output side, and (f) a minimal number of active switches. Apart from this, the paper highlights the...
This paper proposes a single stage multi-port converter and control based on Flyback Principle for solar PV module integrated micro-inverter application. This configuration can be used for grid connected as well as standalone applications with battery backup. The topology provides galvanic isolation between solar PV, battery, and the load and achieves high voltage gain. Moreover, the battery does...
This paper proposes two assistive mobility devices for individuals with visual impairments. These devices use ultrasound technology for the detection of the obstacle distance and a vibration motor - based tactile interface system that generates different vibration patterns as a function of obstacle distance to alert the user. The main device consists of an ultrasound sensor and associated control...
A positive output DC-DC converter high gain has been proposed in this paper. The converter has been synthesized with the help of a Zeta converter, whose two inductors is replaced by Flyback transformers and a diode and filter capacitor connected to the secondary side of each one of them. The output of this converter can reach up to a very high level so that it can be used to interface low-voltage...
This paper proposes a topology of single input multiple-output DC-DC converter by integrating Sepic, Flyback and Boost configuration, whose individual outputs when series connected, results in very high DC-DC conversion ratio. The salient features of the proposed topology are less number of components resulting in a compact structure, less voltage stress of the power electronic devices, high efficiency...
A negative output high gain dc-dc converter derived from conventional Flyback converter has been proposed in this paper. The high-frequency transformer leakage energy is transferred to the output side through a diode and a capacitor, which acts as a passive snubber. The efficient leakage energy recovery results in high steady state operating efficiency. Working on the circuit over the complete switching...
A highly efficient Flyback converter with a passive clamp circuitry has been proposed in this paper. The unwanted leakage energy of the transformer is managed by the passive clamp circuitry consisting of a diode and a capacitor and transferred to the output side electrically. We know that the Flyback converter power rating is limited due to its magnetic. In the case of the proposed converter, one...
A Sepic converter for high power and the high gain application has been proposed in this paper. Generally, due to magnetic limitation, a single Flyback transformer cannot handle high power. Hence, for relatively higher power applications, people prefer the use of interleaved Flyback converter structures. But the interleaved Flyback converter requires the use of two switches. The interesting feature...
A novel negative output high gain dc-dc converter has been proposed in this paper. The converter is synthesized with the help of a Cuk converter, whose two inductors are replaced by Flyback transformers and a diode connected to the secondary side of each one of them. The output of this converter can reach up to a very high level so that it can be used for the interfacing of the utility grid and the...
A Sepic converter with both of its inductors replaced by the Flyback transformer has been proposed here. Outputs of the two Flyback sub-parts are connected in series along with the normal Sepic converter output to result in a high positive overall output voltage. The Sepic converter portion acts as a passive clamp to both the Flyback converters. During the switch turn-off instant, the leakage inductor...
This paper proposes an optimal control strategy for the interleaved flyback based micro-inverter to improve its efficiency over the entire operating range. This control scheme is based on the choice of appropriate operating mode (among 1-phase DCM; 1-phase BCM; 2-phase DCM and 2-phase BCM) at various instantaneous power magnitudes. Operating mode selection of the interleaved inverter at a particular...
This paper proposes a parallel input, series output interleaved flyback principle based micro-inverter for solar PV module integrated converter application. In the proposed topology, inputs of two flyback transformers are connected in parallel while the outputs are connected in series by using interleaving concept. This topology is helpful in achieving high output voltage (ac voltage) from low voltage...
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