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The conventional structure of buck-boost inverter uses IGBTs. IGBTs have features like long tail current, fixed voltage drop and that is why its switching losses are high. In this paper switching cells structured buck-boost inverter is proposed. In switching cell structure, MOSFETs and external diodes with very fast reverse recovery characteristics are used, while the body diodes have no chance of...
This paper proposes a power-circulating operation at light load operation for a parallelly-connected dual-active-bridge (DAB) converter in order to achieve zero voltage switching (ZVS) over entire load range and wide battery-voltage variation. At the light load, a power flow of each DAB converter is controlled in such a way that the transferred power of each DAB converter satisfies the condition for...
A single supply CMOS up level shifter (rsc-ls), for upconverting signals from 0.45V-0.9V logic level range up to 1V power supply voltage domain (Vdd), is introduced. From simulations results, the proposed shifter provides improvements of 63% and 69% in energy consumption and speed, respectively, when compared with a similar design, in 65nm CMOS process and low threshold voltage. For a Vdd of 1.2V...
Transformerless inverters are widely employed in PV grid-tied inverter due to their capability of reducing power losses and enhancing the system efficiency. Several multilevel transformerless topologies are investigated to increase power quality and system efficiency. Wide bandgap power devices such as SiC MOSFETs can increase the system performance and reduce the total losses due to their superior...
This paper presents a high-speed resonant driver for silicon carbide (SiC) MOSFET, which is based on the class-E inverter. Gate-to-source resistance and input capacitance of SiC MOSFET are included in the resonant circuit of the driver for avoiding the driving-signal strain. Additionally, clamp diodes are added to the output filter in the proposed driver, which makes a square-waveform-like driving...
An area-efficient non-volatile flip flop (NVFF) is proposed. The proposed NVFF is comprised of two storages: a conventional flip flop as a static storage during the power-on and a spin-torque transfer magnetic tunnel junction (STT-MTJ) as a temporary storage during the power-off. The area overhead of the MTJ block is minimized by reusing a part of the existing flip flop. The energy overhead for the...
DC-DC converter reliability is of primary interest due to their key role in electronic systems. This paper proposes a diagnostic algorithm, which can be easily implemented in digital programmable device for MOSFET fault detection and identification. An improvement over the existing technique is presented, and its rapid fault detection capability is demonstrated. The two basic faults, namely the short...
Nowadays multilevel inverters are a very attractive solution for medium-voltage high-power conversion applications; they convert DC power to AC power at required output voltage and frequency level. In the design of multilevel inverters, different topologies have been evolved. These topologies include diode clamped multilevel 1 inverter, flying capacitor multilevel inverter and cascaded H bridge multilevel...
This paper presents design of the inverter-based driver for low-voltage applications, with topology for boosting the transistors overdrive voltage. The proposed driver topology was designed through detailed circuit analysis and optimization, and it is suitable for use in a switched capacitor charge pump. The driver was designed in 130 nm CMOS technology and verified by simulations including technology...
This paper presents the results of research into the application of an active battery switching system in the drivetrain of a prototype electric vehicle. The system's purpose is to increase the drivetrain's electrical efficiency especially in the partial-load range. Efficiency is increased using a switching unit that allows the vehicle's traction-battery circuitry to be changed during operation and...
Background/Objective: The memory system occupy a significantly larger area of the SoCs (System on Chip) and it also contributes heavily to the increasing power consumption. The major part of the power consumption is due to the peripheral circuits of the memory systems, with the sense amplifier playing a dominant role, while the memory is accessed for the reading operation. This paper presents a modification...
Transformerless PV inverters are one of the best energy conversion systems for single phase grid tied applications. However eliminating transformer could cause leakage current to flow through the ground, which is hazardous. To minimize the effect of leakage current, common mode voltage (CMV) has to be maintained constant during conduction and freewheeling mode of operation. This paper analyses various...
This article aims to develop the control circuit of a single-phase inverter following our previous studies on the MPPT control and photovoltaic systems, this inverter produces a pure sine wave with an output voltage that has the same amplitude and frequency as Network voltage. A microcontroller, based on advanced technology to generate a sinusoid with fewer harmonics, less cost and a simpler design...
The Non-Conventional sources such as wind energy is environment friendly, cost effective electric source. This paper introduces the modeling and simulation of wind energy conversion system using boost and SEPIC converter under variable supply conditions. These two wind energy system with boost and single ended inductor SEPIC converter are designed on MATLAB/SPS to simulate with three-level neutral...
Static Random Access Memory (SRAM) is a volatile memory designed for high speed and low power applications. As the technology is shrinking down, low-voltage operation has become a major design issue for the analog and digital signal processing applications. Floating gate MOSFET has been used here as low power circuit element. The major advantage of using FGMOS is low power dissipation, tunability,...
In this paper presents the advantages of transformer less in solar based inveter in terms of size, weight and losses. The parasitic capacitance between galvanic between PV module and grid. This paper presents two new schemes, namely high efficiency transformer less sep cuk inverter topology and interleaved boost converter topology. The ZVT based interleaved boost converter is utilized at power processing...
This paper presents a comparative analysis of Voltage Source Inverter using Sinusoidal Pulse Width Modulation Method and Third Harmonic Injection Pulse Width Modulation Method in Three level inverter for different loads with LC filter. In this paper designed the Simulink model of Inverter and Induction motor. All above technique is used to reduce the Total Harmonic Distortion (THD) or the power quality...
This work presents an architecture for Nauta fully differential operational transconductance amplifier that requires no additional circuitry for calibration. This design operates with a power supply of 0.25-V, implemented in a 130-nm digital CMOS process. By operating in the weak inversion region and using the transistor array approach, this OTA shows voltage reduction and stable gain using halo implanted...
The auxiliary resonant snubber inverter (ARSI) as a zero-voltage-transition (ZVT) inverter can achieve the soft-switching of the semiconductor switches, contributing to high efficiency. In the previous researches, the switching loss are considered to be zero with the zero-voltage switching (ZVS) and zero-current switching (ZCS) of the switches. However, the turn-off of the main switches and the turn-on...
A novel low voltage high power multi-phase inverter is presented. Based on an already designed ISCAD machine the specification of an electrical power up to 240 kW at a dc-link voltage below 60 V has to be achieved. For spreading the high currents and the corresponding power losses a 60 phase machine is built up. Each phase is connected with one dedicated half-Bridge, which includes power components...
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