1-Seyezhai- investigation of half-bridge llc resonant
... and acts as the load of the series resonant tank. With this passive load, LLC resonant converter is able to operate at no load condition without the penalty of very high switching frequency. ...
... and acts as the load of the series resonant tank. With this passive load, LLC resonant converter is able to operate at no load condition without the penalty of very high switching frequency. ...
Defense - Auburn University
... The assigning of low voltage gates is based on two major algorithms Clustered Voltage Scaling (CVS) Extended Clustered Voltage Scaling (ECVS). CVS: The cells driven by each power supply are grouped (clustered) together and level conversion is needed only at sequential elemental outputs. ECVS: Th ...
... The assigning of low voltage gates is based on two major algorithms Clustered Voltage Scaling (CVS) Extended Clustered Voltage Scaling (ECVS). CVS: The cells driven by each power supply are grouped (clustered) together and level conversion is needed only at sequential elemental outputs. ECVS: Th ...
Aalborg Universitet Droop Controlled DC Microgrid
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... and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research. ? You may not further distribute the ...
all other uses, in any ... © 2013 IEEE
... under faults or disturbances, the unbalanced AC voltages have been proven to be a great challenge for the control of DC-AC converters in order to keep them normally operating and connected to the AC sources [2], [14], [15]. Special control methods which can regulate both the positive and negative se ...
... under faults or disturbances, the unbalanced AC voltages have been proven to be a great challenge for the control of DC-AC converters in order to keep them normally operating and connected to the AC sources [2], [14], [15]. Special control methods which can regulate both the positive and negative se ...
Fuzzy Logic Control of Soft-Switching DC
... soft-switching dc-dc converter. The detailed design of the PI fuzzy logic controller is described. Then the suggested fuzzy logic control technique is compared to classical linear PI controller which was already implemented in the converter. The simulation results show improved performance of the co ...
... soft-switching dc-dc converter. The detailed design of the PI fuzzy logic controller is described. Then the suggested fuzzy logic control technique is compared to classical linear PI controller which was already implemented in the converter. The simulation results show improved performance of the co ...
Get the Heatsink Off Your Back
... Third, there is room for air to flow under the SynQor converter, which also increases the removal of heat. A second reason that the comparison is not so simple is that a converter's efficiency is a function of both its output power and its temperature. The efficiencies listed in Table 2 are for only ...
... Third, there is room for air to flow under the SynQor converter, which also increases the removal of heat. A second reason that the comparison is not so simple is that a converter's efficiency is a function of both its output power and its temperature. The efficiencies listed in Table 2 are for only ...
High Step-up Boost Converter Integrated With a Transformer
... boost converters are favorable candidates due to their simple structure. However, their input current ripple is large due to a coupled–inductor effect and an additional voltage clamp circuit for the switch and diode is required [13]–[20]. A voltagemultiplier cell or a switch-capacitor circuit can al ...
... boost converters are favorable candidates due to their simple structure. However, their input current ripple is large due to a coupled–inductor effect and an additional voltage clamp circuit for the switch and diode is required [13]–[20]. A voltagemultiplier cell or a switch-capacitor circuit can al ...
HVDC converter
An HVDC converter converts electric power from high voltage alternating current (AC) to high-voltage direct current (HVDC), or vice versa. HVDC is used as an alternative to AC for transmitting electrical energy over long distances or between AC power systems of different frequencies. HVDC converters capable of converting up to two gigawatts (GW) and with voltage ratings of up to 900 kilovolts (kV) have been built, and even higher ratings are technically feasible. A complete converter station may contain several such converters in series and/or parallel.Almost all HVDC converters are inherently bi-directional; they can convert either from AC to DC (rectification) or from DC to AC (inversion). A complete HVDC system always includes at least one converter operating as a rectifier (converting AC to DC) and at least one operating as an inverter (converting DC to AC). Some HVDC systems take full advantage of this bi-directional property (for example, those designed for cross-border power trading, such as the Cross-Channel link between England and France). Others, for example those designed to export power from a remote power station such as the Itaipu scheme in Brazil, may be optimised for power flow in only one preferred direction. In such schemes, power flow in the non-preferred direction may have a reduced capacity or poorer efficiency.HVDC converters can take several different forms. Early HVDC systems, built until the 1930s, were effectively rotary converters and used electromechanical conversion with motor-generator sets connected in series on the DC side and in parallel on the AC side. However, all HVDC systems built since the 1940s have used electronic (static) converters.Electronic converters for HVDC are divided into two main categories. Line-commutated converters(HVDC classic) are made with electronic switches that can only be turned on. Voltage-sourced converters(HVDC light) are made with switching devices that can be turned both on and off. Line-commutated converters (LCC) used mercury-arc valves until the 1970s, or thyristors from the 1970s to the present day. Voltage-source converters (VSC), which first appeared in HVDC in 1997, use transistors, usually the Insulated-gate bipolar transistor (IGBT).As of 2012, both the line-commutated and voltage-source technologies are important, with line-commutated converters used mainly where very high capacity and efficiency are needed, and voltage-source converters used mainly for interconnecting weak AC systems, for connecting large-scale wind power to the grid or for HVDC interconnections that are likely to be expanded to become Multi-terminal HVDC systems in future. The market for voltage-source converter HVDC is growing fast, driven partly by the surge in investment in offshore wind power, with one particular type of converter, the Modular Multi-Level Converter (MMC) emerging as a front-runner.