A modified dual current mode control method with an adaptive current bandwidth

Lale, Srđan; Šoja, Milomir; Lubura, Slobodan

doi:10.1002/cta.2174

Cited by 5 publications

(5 citation statements)

References 33 publications

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“…The developed setup can be used for testing ADCMC on various types of converters, because the used prototype is made as a universal four-quadrant (4Q) converter, with possibility of easy configuration to the desired topology, such as buck, boost, non-inverting buck-boost, etc. A separate electronic module, which is connected to MF624 multifunctional data acquisition input/output digital board [13], is used for implementation of the measurements and inner current loop. The measurement of the inductor current, which is necessary for the inner current loop, is performed with LEM current transducer HX 10-NP [14].…”

Section: Simulation and Experimental Resultsmentioning

confidence: 99%

A non-inverting buck-boost converter with an adaptive dual current mode control

et al. 2017

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This paper presents an implementation of adaptive dual current mode control (ADCMC) on non-inverting buck-boost converter. A verification of the converter operation with the proposed ADCMC has been performed in steady state and during the disturbances in the input voltage and the load resistance. The given simulation and experimental results confirm the effectiveness of the proposed control method.

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Section: Simulation and Experimental Resultsmentioning

confidence: 99%

A non-inverting buck-boost converter with an adaptive dual current mode control

et al. 2017

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“…The literature reports several methods to regulate the average inductor current in analog control [24][25][26] and digital control applications. 27,28 This work aims to analyze the sampling position impact on the DC-DC boost converter.…”

Section: Digital Average Current Mode (Acm) Controlmentioning

confidence: 99%

Improved dynamic performance with discrete sampling in digital ACM controlled DC‐DC boost converter with capacitor ESR inclusion

Balapanuru

Lokhande

Aware

2022

Circuit Theory & Apps

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A classical symmetrical carrier-based digital Average Current Mode (ACM) control has two sampling choices, peak point and valley point, to control the average inductor current. If it is employed to regulate the DC-DC boost converter, there will be a difference in the dynamic performance at peak and valley point sampling instants because of discontinuous output voltage ripple due to Equivalent Series Resistance (ESR) of the output capacitor. Therefore, this paper investigates the effect of sampling instant on the dynamic performance of the PWM DC-DC boost converter in consideration of capacitor ESR. The small-signal transfer functions of a boost converter for both sampling positions are prominent to analyze each sampling impact on its dynamics. They are derived by using discrete-time modeling. Further, the choices of sampling instant are investigated related to the RHP zero elimination, voltage stability, and peak-to-peak ripple current of the DC-DC boost converter. The boost converter has improved stability performance by synchronizing the ADC sampling at starting position (valley point) of the symmetrical carrier signal, as evident by the analytical and hardware results of both sampling techniques working from 25% to 100% load working conditions.

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“…[1][2][3][4][5][6][7][8] Therefore, in these applications, an accurate and fast sensing of capacitor current is crucial. [1][2][3][4][5][6][7][8] Therefore, in these applications, an accurate and fast sensing of capacitor current is crucial.…”

Section: Introductionmentioning

confidence: 99%

“…Output capacitor current is often introduced into control circuit for the improvement of system transient performance due to its ability of rapidly reflecting load changes of power converters. [1][2][3][4][5][6][7][8] Therefore, in these applications, an accurate and fast sensing of capacitor current is crucial. 4,6,8 Series-sense resistor is a conventional way of sensing current.…”

Section: Introductionmentioning

confidence: 99%

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Transfer function‐matched capacitor‐current sensing and its circuit implementation for high‐frequency power converters

Yan

Yang

et al. 2017

Circuit Theory & Apps

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It would effectively achieve a fast load transient response in switching-mode power converters when introducing capacitor current into the feedback control loop. In these schemes, an accurate and rapid sensing of capacitor current is crucial in the control circuit design. On this issue, a paralleled nonintrusive sensing scheme for capacitor current is proposed in this paper, which is implemented by matching the transfer functions of the sensing circuit and the sensed capacitor branch. With the proposed transfer function matching approach, 4 possible circuit topologies are derived in theory, and on this basis, a parameter design flow chart is given for 2 of candidate topologies. With the application of the proposed capacitor-current sensing circuit to a constant-frequency hysteresis controlled Buck converter, a fast and accurate sensing of capacitor current is achieved in experiment, as well as a fast load transient response.

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A modified dual current mode control method with an adaptive current bandwidth

Cited by 5 publications

References 33 publications

A non-inverting buck-boost converter with an adaptive dual current mode control

A non-inverting buck-boost converter with an adaptive dual current mode control

Improved dynamic performance with discrete sampling in digital ACM controlled DC‐DC boost converter with capacitor ESR inclusion

Transfer function‐matched capacitor‐current sensing and its circuit implementation for high‐frequency power converters

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