Maximum resolution of switched capacitor converter: a graphical approach

Natheer, Sara Khalid; Kadir, Mohamad N. Abdul

doi:10.11591/ijpeds.v13.i1.pp330-339

Cited by 2 publications

(3 citation statements)

References 19 publications

(25 reference statements)

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“…It has also the minimum total capacitor voltage ratings. The multiphase cycle converter [16], however, provides the maximum number of voltage steps at the expense of large number of series switches in the current path.…”

Section: Discussion Of the Voltage Regulation And Efficiency Resultsmentioning

confidence: 99%

“…One approach to achieve voltage regulation efficiently is based on designing a converter with multiple open-circuit voltages. In the design described in [16], it is shown that the four-capacitor converter can provide up to 21 no-load voltages in the step-down SCC. The implementation of this concept is based on establishing multiple circuit configurations (phases) within the switching cycle which requires full flexibility in the connection of capacitors.…”

Section: Object and Hypothesis Of The Studymentioning

confidence: 99%

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Development of an efficient voltage regulation mechanism for switched capacitor converter with exponential gain

Kadir

Ameen

Al-Badrani³

2022

EEJET

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The compact switched-capacitor converter with exponential gain and modular design has been adopted in this paper. Two approaches have been applied to improve the efficiency by providing multiple no-load voltages. The first modifies the switching strategy to bypass the gain of one or more stages. The second introduces modified design that provide additional no-load voltages through alternative current paths. The voltage regulation is implemented by two control loops: The outer loop is designed to produce the minimum feasible no-load voltage and the inner loop adjusts the duty ratio of the switching signals to regulate the voltage to meet the desired reference. Switched capacitor converters have been used as voltage multipliers with constant voltage gain. The efficiency of a switched capacitor converter depends on the ratio between regulated to unregulated output voltage. Therefore, output voltage adjustment of these converters causes a significant efficiency reduction. By providing multiple no-load voltages within the output voltage range the efficiency of the switched capacitor converter can be improved. The proposed design has been applied to a three-stage converter to provide six no-load voltages. Simulation results demonstrate that the average efficiency over the entire output voltage range is more than 90 % of its maximum efficiency of the unregulated switched capacitor converter which reflects the effectiveness of the proposed scheme. This paper offers an efficient method to regulate the voltage of a modular switched capacitor converter with exponential gain. The advantages of the proposed design are small number of added components, does not require additional sources and suitable for higher power range

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Section: Discussion Of the Voltage Regulation And Efficiency Resultsmentioning

confidence: 99%

Section: Object and Hypothesis Of The Studymentioning

confidence: 99%

Development of an efficient voltage regulation mechanism for switched capacitor converter with exponential gain

Kadir

Ameen

Al-Badrani³

2022

EEJET

View full text Add to dashboard Cite

show abstract

“…The selection of capacitors as filters must meet the criteria. The adjustable gain converter switching capacitor is designed with multiple no-load voltages for higher efficiency over the voltage control range [44]. That is, the working voltage must be higher than the supply voltage and the capacitance value.…”

Section: Figure 1 Power Supply Block Diagrammentioning

confidence: 99%

Fabrication and experimental study of transformer 400 V with a simple rectifier circuit design

Puspasari

Sismanto

Ashari

2023

IJECE

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The demand for increased voltage in renewable energy sources is relatively high. This study examines the rapid development of technology considering the use of voltage-increasing transformers. Voltage regulator circuits are generally used to stabilize the output voltage of the rectifier according to the amount of input from the transformer. However, components for high-voltage stabilizer circuits are rare, which becomes an obstacle to the stabilization of the rectifier output. This study aimed to determine the performance of the designed rectifier circuit against a non-center tap step-up direct current (DC) 400 V transformer and compare the measurement results to manual calculations. The research method is a direct comparison between the input and output voltage values of the transformer after going through a rectifier circuit. This experiment was conducted using the repeatability method three to five times for each voltage variation on the transformer. The voltage variations successfully created are 0 to 50, 0 to 100, 0 to 200, and 0 to 400 V. The output test results from the DC transformer and rectifier circuit show linear results and an increase in peak-to-peak voltage data between the transformer and rectifier outputs by 3.8%.

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Maximum resolution of switched capacitor converter: a graphical approach

Cited by 2 publications

References 19 publications

Development of an efficient voltage regulation mechanism for switched capacitor converter with exponential gain

Development of an efficient voltage regulation mechanism for switched capacitor converter with exponential gain

Fabrication and experimental study of transformer 400 V with a simple rectifier circuit design

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