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This paper presents the analysis and design of a boost converter with bipolar Dickson voltage multiplier. The bipolar Dickson voltage multiplier offers high gain with low stress on both capacitors and switches. Connecting bipolar Dickson cell to a boost converter yields several benefits such as an overall high static voltage gain and at the same time reduces the required inductance that ensures operation...
Using the conventional boost converter in applications that require high-voltage-gain conversion have several challenges. The conventional boost converter can have high-voltage-gain ratio if only operates with an extremely high duty ratio. Also, the output diode might suffer from the reverse recovery phenomena at the high duty cycle and high-power applications. Therefore, a new topology is required...
This paper presents a novel interleaved high-gain DC-DC boost converter with Greinacher voltage multiplier cells (GVMC). The proposed topology consists of two stages: an interleaved boost stage to reduce the AC ripple on the input current and the voltage multiplier circuit to increase the voltage gain ratio. The voltage stress on active switches is lower than that from the conventional boost converter,...
Wireless power transfer (WPT) is the future solution for electric vehicles due to its merits compared to conductive charging. The main obstacles to WPT are efficiency and power transfer capability. Compensation topologies play a key role in improving efficiency and power transfer capability of WPT. This paper carries the evaluation of electrical parameters for wireless charging of an e-Rickshaw through...
A single stage high gain Buck-Boost inverter (BBI) for photovoltaic application is proposed in this paper. The proposed topology is with simple circuit and low switch count. The three-winding tapped inductor is applied to attain high gain feature. One-cycle control (OCC) is adopted to obtain superior source ripple rejection. The paper presents the detail operation principle of the proposed topology,...
This paper presents a comparative study between a conventional boosted-VSI electric/hybrid electric vehicle (EV/HEV) powertrain converter with alternative topologies including bidirectional CSI, Silicon (Si)-based current-fed Quasi Z-Source Inverter (CF-qZSI), and Silicon Carbide (SiC)-based CF-qZSI. The higher switching frequency operation of SiC MOSFETs enables the size reduction of reactive elements...
This paper present the analysis and design of a converter Boost with low current stress, the proposed topology is based in the integration of multi-phase and multi-stage scheme. The design methodology enable obtain a high CD voltage with low ripple in voltage and, for validate this converter is presented the design for output power of 100W, the simulation results obtain validated the propose for design...
In this paper, a new quasi Z-source inverter based on new capacitor basic units (CAQZSI) is proposed. It is possible to develop the proposed topology by using n numbers of the basic units that is one of the main advantages of the proposed CAQZSI. The boost factor equation, voltage and current equations of the capacitors, diodes and inductors are obtained for the proposed topology and developed CAQZSI...
In this paper, a novel three-phase rectifier based on triple line-voltage cascaded VIENNA converters has been proposed. A comprehensive analysis to the proposed converter is presented. Compared to conventional three-phase cascaded H-bridge converters, in the proposed new multilevel converters, the switch voltage stress is reduced, and fewer switches and dc capacitors are required under the similar...
In this paper, a switched Z-source dc-dc converter (SZSC) is proposed for the conversion from a low voltage to a higher one in renewable energy systems. The voltage gain is increased by adding another one switch and diode to the output terminal of the traditional Z-source dc-dc converter. Not only does the output capacitor function as the filter capacitor; it is also connected in series into the inductors'...
A dual active bridge (DAB) converter is a widely used structure in the low voltage direct current (LVDC) distribution system. In the case of the conventional single-level DAB, the higher the input and output voltage, the higher the voltage stress that the power switch must withstand. To solve this problem, a multi-level structure can be applied to the DAB converter to have low voltage stress of the...
The paper proposes a new step-up topology with high step-up conversion ratio. Dc analysis is performed and the static characteristics are derived revealing that the static conversion ratio exhibits a high voltage boost, the converter still operating at reasonable duty cycles. Compared to a classical Boost, the static conversion ratio at the same duty cycle D is (1+nD) time higher, where n is the transformer...
A combined quasi-two-stage bridgeless power factor correction (BPFC) converter is analyzed and evaluated in this paper. The combined converter is composed of a three-port BPFC (TP-BPFC) converter and a Buck DC-DC converter. A low voltage and high voltage DC voltage ports are provided by the TP-BPFC converter. A low voltage DC load, whose voltage is lower than the peak AC line voltage, can be directly...
Traditional Z-source inverter can boost or buck voltage for its unique impedance network, but also has its own drawbacks, such as input current is not continuous, boost capacity is limited, the capacitor voltage stress is large and etc. In order to overcome the shortcomings of the traditional Z-source inverter, a series of Z-source inverters are proposed. In this paper, the topology of three kinds...
In this paper, a novel bridgeless Flyback power factor correction rectifier is presented. Two active power switches, rather than the line-voltage diode bridge, are used to provide the bidirectional power flow. In comparison with the existing Flyback rectifiers, the proposed topology uses less number of transformer windings which simplifies the complexity of implementation in terms of magnetic utilization...
A high gain single stage buck-boost inverter (SSBBI) is proposed in this paper. The proposed topology has low semiconductors count, only four switches. The tapped inductor is applied to attain high gain feature. One-cycle control (OCC) is adopted to control the SSBBI and attain superior source ripple rejection. The paper presents the operation principle of the proposed topology, and the derivation...
In this paper, a three-degree-of-freedom robot model is established to solve the problem of unstable structure of the manipulator. Using the finite element method, topology optimization, the key component of the robot, the rear arm. This paper carries out static analysis, lightweight design, to verify its stiffness and strength. For the improved arm structure, the structure is more stable, reasonable...
This paper presents a novel structure of high step-up DC/DC converters intended for distributed generation systems such as fuel cells and photovoltaic (PV) systems. Proposed topologies integrate the classical Y-source impedance network with different step-up cells to acquire strong boost ability which is unmatched by existing impedance networks. Compared to Y-source, proposed converters reserve versatile...
This paper proposes a transformerless improved step-down conversion ratio Interleaved Buck Converter (IBC) with low switch voltage stress, which is achieved through capacitive voltage division. A snubber circuit is also incorporated which can perform as an auxiliary circuit for capacitor pre-charging as well as can perform snubber function. The proposed approach eliminates the need of additional pre-charging...
A Z-source boost dc-dc converter along with a multilevel inverter is proposed. In this work, the modified converter with conventional Z-source network has high voltage gain compared to the traditional boost dc-dc converters. It gives a common ground between the dc supply source and load output. The impedance network acts as a bridge connecting the source and the converter. It does not require any...
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