Uniform Voltage Distribution Control for Series-Input Parallel-Output, Connected Converters

Siri, K.; Willhoff, Michael; Truong, Chanh-Tin; Conner, K.A.

doi:10.1109/aero.2006.1656001

Cited by 22 publications

(9 citation statements)

References 21 publications

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“…The proposed CC/CV converter with a multi-module-stack is shown in Figure 4. All modules, each having a topology as shown in Figure 1a and shunt-regulated individually, are stacked by series input and parallel output, through which a high-voltage input, medium-voltage output converter can be achieved [32,33]. When all modules are switched into running, the maximum output power is the sum of the maximum value of each module.…”

Section: Overall Descriptionmentioning

confidence: 99%

Reconfigurable Power Converter for Constant Current Underwater Observatory

et al. 2020

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A constant current (CC) underwater observatory employing the shunt method to provide constant voltage (CV) power for external loads is favored in occasions where shunt-fault tolerance is required. However, low efficiency of CC to CV conversion with the shunt method limits its application, especially in scenarios of varying loads. In this paper, a highly reliable and stable CC/CV converter with better efficiency is introduced based on the proposed novel active soft bypass (ASB) technology and the proposed novel priority-based power management strategy (PPMS). The ASB technology is a method that employs switches and a special control sequence which greatly depresses the large voltage transient presenting on the input side when trying hard bypass redundant modules, and the PPMS makes the system easy to monitor and ensures the absolute reliability of ASB technology. The theoretical study of this novel reconfigurable CC/CV converter and validation experiments on a prototype are carried out, with results showing great improvement in the performance. In addition, the proposed reconfigurable power converter is applied to a coastal observatory in the East China Sea.

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Section: Overall Descriptionmentioning

confidence: 99%

Reconfigurable Power Converter for Constant Current Underwater Observatory

et al. 2020

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“…Previous studies [7][8][9] of series-input parallel-output (SIPO) converter architectures revealed how UIVD control can achieve uniform power sharing among series-connected converters that absorb identical DC input currents. However, instead of power processing from a common power source, UIVD control adopted in SIPO converter architectures was designed [10] to achieve optimum power throughput from series-connected power sources.…”

Section: Introductionmentioning

confidence: 99%

Maximum Power Tracking with Uniform Time Division among distributed power sources

Siri

2015

2015 IEEE 24th International Symposium on Industrial Electronics (ISIE)

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Presented herein is Uniform Time Division (UTD) of Maximum Power Tracking for Distributed-Input Parallel-Output (DIPO) converter power systems. The primary objective of UTD for DIPO converters is to periodically spend equal time in processing maximum power from each of distributed sources using only one MPT non-linear controller. As a result, the UTD-MPT controller sequentially provides equal time intervals of processing maximum power flow from the power sources. Conventionally, the peak values of the distributed source power are concurrently tracked through converters controlled by their own independent MPT controllers without UTD. However, when peak power voltages of distributed power sources are slowly changed as compared to the MPT's response time, such concurrent MPT control for all of the power sources is not necessary. By utilizing UTD of MPT non-linear control, maximum use of available power obtained from each distributed power source is achieved using a single MPT non-linear controller. The resulting system and control architectures offer maximum power transfer with a lower part count. A DIPO power converter bus architecture with a battery-dominated output voltage is described herein. The power and control architectures for DIPO converters are validated through computer simulation for fault-tolerant UTD MPT control.

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“…One critical issue for the modular structure is distribution of the line voltage, which has been investigated for series input parallel output converters in [5][6][7][8][9][10][11]. However, most approaches required additional control loop for the line voltage sharing.…”

Section: Introductionsmentioning

confidence: 99%

LED Drive Circuit with Series Input Connected Converter Cells Operating in Continuous Conduction Mode

Zane

2009

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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This paper introduces an LED drive circuit implemented by series input connected converter cells with a common duty cycle control approach operating from a dc voltage bus. With this structure, low voltage high frequency ICs and low profile components can be applied in high voltage applications. Flexibility is provided for the cells to work under different voltage supply conditions by simply changing the number of series converters. With the converters operating in continuous conduction mode (CCM), the common duty cycle control approach enables automatic line voltage sharing and output current copying. The approach results in a control-to-output transfer function of the system that is close to that of a single converter for ease of feedback loop design. The modular approach also allows continued operation in the presence of open circuit LED failures. Design considerations and experimental results are presented for a 25 W 3-cell system with 9 Luxeon K2 high brightness LEDs, demonstrating line voltage sharing, output current copying and LED failure response.

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Uniform Voltage Distribution Control for Series-Input Parallel-Output, Connected Converters

Cited by 22 publications

References 21 publications

Reconfigurable Power Converter for Constant Current Underwater Observatory

Reconfigurable Power Converter for Constant Current Underwater Observatory

Maximum Power Tracking with Uniform Time Division among distributed power sources

LED Drive Circuit with Series Input Connected Converter Cells Operating in Continuous Conduction Mode

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