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Showing 1 to 12 of 12 for “"voltage converter"”.
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A direct A.C. to A.C. regenerative frequency and voltage converter
… such operation from a fixed frequency fixed voltage supply is proposed, under the name of the asynchronous modulation converter. This converter is of the cycloconverter family, but is force-commutated and is not synchronised with the supply frequency. The power switching element comprises a …
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Cascaded High Voltage Converter with Variable Control for Pulsed Electric Field Applications
… The proposed system consists of cascaded power converters that provide a pulse output voltage in order to create a pulsed electric field (PEF) to lyse algae. The proposed system is unique from any known PEF systems because it provides the ability to independently adjust peak voltage, pulse width …
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On the Design of a High-Power Medium-Voltage Converter for Transportation Applications
… applications, the size and weight of power converters and associated cabling is of paramount importance, as this bulk contributes to the "overhead" that must be carried about by the transportation system. Thus, improvements to the power density of such systems, as well as the possibility of …
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High-frequency Current-transformer Based Auxiliary Power Supply for SiC-based Medium Voltage Converter Systems
… drivers, sensors, controllers, etc. in medium voltage (MV) silicon carbide (SiC)-based converter systems. Such a converter requires APS to have high insulation capability, low common-mode coupling capacitance (Ccm ), and high-power density. Furthermore, considering the lifetime and simplicity …
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Device Voltage Balancing from Device-level to Converter-level in High Power Density Medium Voltage Converter using 10 kV SiC MOSFETs
… electronics systems which can provide medium-voltage (MV) to high-voltage (HV) output (>13.8 kV ac, > 20 kV dc) with much faster dynamic response (> 10 kHz bandwidth) or high switching-frequency will enable new electronic energy network architectures, like MVDC power delivery, underground …
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Ring oscillators for high performance clock synthesis and sensor interfaces
… locked to an RC sensor using a FLL. We propose a voltage mode FLL structure which guarantees very small area and low noise thanks to a novel 3-phase frequency-to-voltage converter which eliminates charge pump noise. The quantization noise is rejected by passing the 10 phases of the RO to an edge …
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Control and Sensor Development on a Four-Wheel Pyramidal Reaction Wheel Platform
… output into a speed by use of a frequency to voltage converter. Additionally, although three gyroscopes had been implemented previously, the system was better incorporated into the model such that it was directly transformed via a ROBOSTIX ADC converter before being relayed to SIMULINK via a …
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High-Frequency Design Consideration and EMI Mitigation in SiC-based Multilevel Converters
Medium Voltage (MV) power conversion systems are essential in high power applications to address the increasing demand of energy and the increasing penetration of renewable energy sources. MV power electronics converters are the key elements for power conversion in MV systems and are the focus of …
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Grid current control methods for MV wind energy conversion systems
… common solution is to make the two-level low voltage converter in parallel in order to achieve sufficient power rating. However, research has found that by employing medium voltage multilevel converters will reduce the cost of energy. Additionally, the grid converter is the only way to connect …
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Integration Challenges In High Power Density Wide Bandgap Based Circuits for Transportation Applications
… higher efficiency, higher power density power converters are desired. The new generation of wide bandgap (WBG) power semiconductor devices pushs the switching frequency and output power of the electric system in transportation to a higher level thanks to their higher blocking voltage, higher …
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Insulation Design, Assessment and Monitoring Methods to Eliminate Partial Discharge in SiC-based Medium Voltage Converters
In comparison with Si-based converters, the emerging Medium Voltage (MV) SiC-based converters can achieve higher blocking voltage capability, lower on-resistance, faster switching speed with less switching related losses and run under higher temperature. Thus, theoretically, it can achieve much …
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Koncový zesilovač a subwoofer pro automobil
Tato práce popisuje návrh dvou výkonových zesilovačů pro subwoofer a pro čtyři základní automobilové reproduktory. Dále je součástí práce řešení napájecích obvodů těchto zesilovačů. Ovládání zesilovačů je realizováno pomocí procesoru. Dále se věnuje problematice spojené s ozvučením automobilu, …