The Experts below are selected from a list of 4674015 Experts worldwide ranked by ideXlab platform
H A Toliyat - One of the best experts on this subject based on the ideXlab platform.
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a zvs single inductor multi input multi output dc dc converter with the step up down capability
Energy Conversion Congress and Exposition, 2013Co-Authors: Hamidreza Keyhani, H A ToliyatAbstract:A multiple input-output dc-dc topology with soft switching operation and step up/down ability is introduced in this paper. The number of the converter's inputs and outputs are completely arbitrary while they can be at different voltage and power levels. The proposed topology is composed of a small ac inductor-capacitor pair as the high-frequency link and only one reverse-blocking switch for each input or output of the converter. In order to transfer power, the link inductor charges through the inputs one-by-one and then discharges to the outputs in a proper sequence. The link capacitor creates partial resonances to achieve the zero-voltage switching at both turn-on and turn-off of all the power switches. A small-sized high-frequency transformer can be employed in the converter's link for galvanic isolation. The principle of operation of the proposed topology is described, and a detailed analysis of the converter is carried out. Experimental results are provided to validate the performance of the proposed Multi-Input Multi-Output dc-dc converter.
Dylan Dah-chuan Lu - One of the best experts on this subject based on the ideXlab platform.
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Single-Inductor Multi-Input Multi-Output DC–DC Converter With High Flexibility and Simple Control
IEEE Transactions on Power Electronics, 2020Co-Authors: Xiaolu Lucia Li, Zheng Dong, Dylan Dah-chuan LuAbstract:Multi-Input Multi-Output (MIMO) dc–dc converters can integrate multiple input sources and output loads simultaneously. This article proposes a new single-inductor MIMO dc–dc converter with a wide conversion ratio. The proposed converter allows input sources to be added or removed seamlessly with no cross-regulation problem. Meanwhile, the outputs are independently controlled, i.e., the load change at one output cell will not affect the other interconnected output cells. Constant current control is the main control requirement. When constant current control is applied to all input cells, the power provided by each input source is proportional to the voltage magnitude of the source. When the constant current control is applied to some of the input cells, the input sources with direct duty-cycle controlled input cells can provide specific power through controlling the duty cycles of the switches of the corresponding input cells. Moreover, the switching time of switches is irrelevant. Therefore, it is easy to realize the high extension capability for arbitrary inputs/outputs. A dual-input dual-output prototype is constructed to illustrate the performance of the proposed converter. The corresponding component design is presented.
Lili Guan - One of the best experts on this subject based on the ideXlab platform.
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peak to average power ratio reduction in alamouti multi input multi output orthogonal frequency division multiplexing systems without side information using phase offset based partial transmit sequence scheme
Iet Communications, 2014Co-Authors: Tao Jiang, Chunxing Ni, Lili Guan, Qi QiAbstract:In this study, a novel phase offset-based partial transmit sequence (PTS) scheme is proposed to reduce the peak-to-average power ratio (PAPR) in Alamouti coded Multi-Input-Multi-Output orthogonal frequency division multiplexing systems, and its key idea is that different phase rotation sequences are multiplied by their corresponding phase offsets at the transmitter. Moreover, a minimum Euclidean distance decoder is proposed to recover the phase rotation sequences at the receiver. The theoretical analysis and simulation results show that the proposed PTS scheme could offer good performances of both the bit error rate and the PAPR reduction without transmitting the side information, resulting in the increase of the data rate.
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peak to average power ratio reduction in alamouti multi input multi output orthogonal frequency division multiplexing systems without side information using phase offset based partial transmit sequence scheme
Iet Communications, 2014Co-Authors: Tao Jiang, Lili GuanAbstract:In this study, a novel phase offset-based partial transmit sequence (PTS) scheme is proposed to reduce the peak-to-average power ratio (PAPR) in Alamouti coded Multi-Input-Multi-Output orthogonal frequency division multiplexing systems, and its key idea is that different phase rotation sequences are multiplied by their corresponding phase offsets at the transmitter. Moreover, a minimum Euclidean distance decoder is proposed to recover the phase rotation sequences at the receiver. The theoretical analysis and simulation results show that the proposed PTS scheme could offer good performances of both the bit error rate and the PAPR reduction without transmitting the side information, resulting in the increase of the data rate.
Hamidreza Keyhani - One of the best experts on this subject based on the ideXlab platform.
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a zvs single inductor multi input multi output dc dc converter with the step up down capability
Energy Conversion Congress and Exposition, 2013Co-Authors: Hamidreza Keyhani, H A ToliyatAbstract:A multiple input-output dc-dc topology with soft switching operation and step up/down ability is introduced in this paper. The number of the converter's inputs and outputs are completely arbitrary while they can be at different voltage and power levels. The proposed topology is composed of a small ac inductor-capacitor pair as the high-frequency link and only one reverse-blocking switch for each input or output of the converter. In order to transfer power, the link inductor charges through the inputs one-by-one and then discharges to the outputs in a proper sequence. The link capacitor creates partial resonances to achieve the zero-voltage switching at both turn-on and turn-off of all the power switches. A small-sized high-frequency transformer can be employed in the converter's link for galvanic isolation. The principle of operation of the proposed topology is described, and a detailed analysis of the converter is carried out. Experimental results are provided to validate the performance of the proposed Multi-Input Multi-Output dc-dc converter.
Tao Jiang - One of the best experts on this subject based on the ideXlab platform.
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peak to average power ratio reduction in alamouti multi input multi output orthogonal frequency division multiplexing systems without side information using phase offset based partial transmit sequence scheme
Iet Communications, 2014Co-Authors: Tao Jiang, Chunxing Ni, Lili Guan, Qi QiAbstract:In this study, a novel phase offset-based partial transmit sequence (PTS) scheme is proposed to reduce the peak-to-average power ratio (PAPR) in Alamouti coded Multi-Input-Multi-Output orthogonal frequency division multiplexing systems, and its key idea is that different phase rotation sequences are multiplied by their corresponding phase offsets at the transmitter. Moreover, a minimum Euclidean distance decoder is proposed to recover the phase rotation sequences at the receiver. The theoretical analysis and simulation results show that the proposed PTS scheme could offer good performances of both the bit error rate and the PAPR reduction without transmitting the side information, resulting in the increase of the data rate.
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peak to average power ratio reduction in alamouti multi input multi output orthogonal frequency division multiplexing systems without side information using phase offset based partial transmit sequence scheme
Iet Communications, 2014Co-Authors: Tao Jiang, Lili GuanAbstract:In this study, a novel phase offset-based partial transmit sequence (PTS) scheme is proposed to reduce the peak-to-average power ratio (PAPR) in Alamouti coded Multi-Input-Multi-Output orthogonal frequency division multiplexing systems, and its key idea is that different phase rotation sequences are multiplied by their corresponding phase offsets at the transmitter. Moreover, a minimum Euclidean distance decoder is proposed to recover the phase rotation sequences at the receiver. The theoretical analysis and simulation results show that the proposed PTS scheme could offer good performances of both the bit error rate and the PAPR reduction without transmitting the side information, resulting in the increase of the data rate.