The recently proposed novel unidirectional multilevel rectifier, a three single-phase star-connected has the characteristic of having large number DC-side capacitors and complex capacitor voltage balancing control structure under conventional carrier-based phase-shift sine wave pulse-width modulation (SPWM). Hence, space vector (SVPWM) algorithm for rectifier is in this paper, which can quickly...

The mass usage of traditional fossil energy has adversely affected the environment on a global scale, such as environmental pollution and greenhouse effect. Meanwhile, there has been a growing demand for energy with the development of society. Since traditional fossil energy is not renewable, it is faced with the problem of energy shortage. Solar energy and hydrogen energy are promising, and ph...

This paper presents a novel single-phase grid-tied neutral-point-clamped (NPC) five-level converter (SPFLC). Unlike the literature on NPC topologies, proposed one is capable of inherently balancing voltage DC-link split capacitors. For this purpose, simple Multicarrier Phase Disposition (MPD) Pulse Width Modulation (PWM) technique used, thus avoiding both complex modifications to Space Vector (...

The electrical performance of Hybrid capacitors (US Patent 5,369,547) using high capacitance density electrochemical capacitor cathodes, electrolytic capacitor anodes and dielectric, and compatible electrolytes is strongly influenced by the nature of the electrolyte employed and the physical characteristics of the electrodes. Management of overall capacitor performance usually involves optimizi...

This Thesis details the design, fabrication and characterization of organic semiconductor field effect transistors with silicon oxide-nitride-oxide-semiconductor (SONOS) gates for use in spiking analog neural circuits. The results are divided into two main sections. First, the SONOS structures, parallel plate capacitors and field effect transistors, were designed, fabricated and characterized. ...

Energy shortage and environmental contamination in the present scenario has increased the use of renewable energy sources.Among the renewable energy sources the photovoltaic cells plays a significant role in meeting the energy requirements. The problem associated with the PV cells are it produces low output voltage and thus a high step-up dc dc converter is essential to boost the low voltage of...

Widely used as insulators, capacitors, and transducers in daily life, soft dielectrics based on polymers and polymeric gels play important roles in modern electrified society. Owning to their mechanical compliance, soft dielectrics subject to voltages frequently undergo large deformation and mechanical instabilities. The deformation and instabilities can lead to detrimental failures in some app...

As dense digital circuitry is packed close to sensitive analog blocks for higher integration, SoC solutions are swamped in switching noise generated by digital circuits, RF blocks, and DCDC converters. In this harsh environment, linear regulators have to protect noise-sensitive analog blocks like VCOs and ADCs from coupled supply noise that has amplitudes on the order of hundreds of millivolts ...

This paper describes the design of an ultra low-frequency, dc-blocked, differential lownoise amplifier (LNA) used for electromyogram and cortical signal detection in an implantable FES or neural prosthetic device. The LNA detects bioelectric signals in the frequency range of 0.035 Hz to 5000 Hz and amplitude range of 10 uV to 100 mV. Large dc voltages of up to 14V can exist across the two sensi...

Multilevel converters are mainly utilized to synthesize a desired singleor three-phase voltage waveform. The desired output voltage is obtained by combining several separate dc voltage sources. Solar cells, fuel cells, batteries, and ultracapacitors are the most common independent sources used. Multilevel converters have found wide applications in motor drives, static VAR compensators, and unin...