Optimal PWM Control of Switched-Capacitor DC–DC Power Converters via Model Transformation and Enhancing Control Techniques

Ho, Charlotte Yuk-Fan; Ling, Bingo Wing‐Kuen; Liu, Yanping; Tam, P.K.S.; Teo, K.L.

doi:10.1109/tcsi.2008.916442

Cited by 37 publications

(28 citation statements)

References 36 publications

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“…The resonant capacitance value should meet (29), and it should be chosen according to the voltage ripple [26] [27] . A detailed derivation is discussed in Appendix A:…”

Section: ) Resonant Capacitormentioning

confidence: 99%

High Step-up Active-Clamp Converter with an Input Current Doubler and a Symmetrical Switched-Capacitor Circuit

He¹,

Zeng²,

Li³

et al. 2015

Journal of Power Electronics

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A high step-up dc-dc converter is proposed for photovoltaic power systems in this paper. The proposed converter consists of an input current doubler, a symmetrical switched-capacitor doubler and an active-clamp circuit. The input current doubler minimizes the input current ripple. The symmetrical switched-capacitor doubler is composed of two symmetrical quasi-resonant switched-capacitor circuits, which share the leakage inductance of the transformer as a resonant inductor. The rectifier diodes (switched-capacitor circuit) are turned off at the zero current switching (ZCS) condition, so that the reverse-recovery problem of the diodes is removed. In addition, the symmetrical structure results in an output voltage ripple reduction because the voltage ripples of the charge/pump capacitors cancel each other out. Meanwhile, the voltage stress of the rectifier diodes is clamped at half of the output voltage. In addition, the active-clamp circuit clamps the voltage surges of the switches and recycles the energy of the transformer leakage inductance. Furthermore, pulse-width modulation plus phase angle shift (PPAS) is employed to control the output voltage. The operation principle of the converter is analyzed and experimental results obtained from a 400W prototype are presented to validate the performance of the proposed converter.

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“…The resonant capacitance value should meet (29), and it should be chosen according to the voltage ripple [26] [27] . A detailed derivation is discussed in Appendix A:…”

Section: ) Resonant Capacitormentioning

confidence: 99%

High Step-up Active-Clamp Converter with an Input Current Doubler and a Symmetrical Switched-Capacitor Circuit

He¹,

Zeng²,

Li³

et al. 2015

Journal of Power Electronics

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show abstract

“…The format of the turning out results may be voltage or current. Once the digital signals are obtained then passed into the processing with a micro-computer system for the purpose of surveillance, measuring, and recording [10]. There is an analog-to-digital device is adopted for recording and monitoring designed in this system.…”

Section: Analog-to-digital Convertermentioning

confidence: 99%

“…We inspect the efficiency caused by the whole application of small signal with transistor circuit proposed by Lian [6]. A DC-to-DC convertor works out in [7] presents by Kim, which is to combine with a single pole three-phases circuit solves the problems and to solve the saving energy consuming in solar cell system problems [8][9][10][11]. The motivation of this article is arming in proposing and developing an energy saving system which applies the PWM schemes in deploying with a contactless wireless control method.…”

Section: Introductionmentioning

confidence: 99%

Aware of Life-Time in Lighting Applications by Applying PWM

Iong-Zong¹,

hao²

2014

2014 International Conference on Automatic Control Theory and Application

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Abstract-A contactless way to prolong the life-time of lighting applications by PWM (pulse width modulation) device power system is developed in this article. The system can match most sustainable energy, such as solar energy or wind power generator. It can automatically switch with the best way to control sustainable energy power system which fit in. On the other hand, because single chip can transfer power instantly to drive device up, like charge smartphone, it is a highly customize device. With the control system, traditional sustainable energy device can work much longer life-time and stable. Through adjustable wireless protocol, PWM, low-power multi-purpose regulator circuit and instant feedback display, so it can be optimized most sustainable energy devices. The proposed control system is built by a single chip microcontroller which is serving as the integration of the control core of the circuit, voltage feedback monitor at the same time. In order to improve system performance, the research made for different drive designs to analyze and compare, and simulated calculation and experimented.

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“…Several control techniques have been recently developed for the general framework of the DC-DC power converters [9][10][11][12][13][14]. Some of these techniques have been applied to specific DC-DC converters.…”

Section: Introductionmentioning

confidence: 99%

“…The new aspect of this method with respect to other optimal methods for power converters (e.g. [13,19,37]) is that the proposed synthesis implies determining the singular optimal solutions that arise in the optimal problem [35]. An algorithm is proposed to generate all optimal trajectories on a given state space area.…”

Section: Introductionmentioning

confidence: 99%

Alternative control methods for DC–DC converters: An application to a four‐level three‐cell DC–DC converter

Patino¹,

Bâja²,

Riedinger³

et al. 2010

Intl J Robust & Nonlinear

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SUMMARYThis paper proposes three synthesis methods for controlling power converters. The three control strategies yield state feedback control laws that are easy to implement. The first method is a stabilization approach, based on energetic principles and the notion of Lyapunov function. The second is an optimal control approach based on the minimum principle. The third is a neural predictive approach which uses model predictive control to track a given optimal stable limit cycle. This method allows a proper control of the waveform. Except for the predictive approach, system stability for the methods is guaranteed by construction. The four-level three-cell DC-DC converter is used as a benchmark to test these strategies. Simulation and experimental results show that the methods have a good performance even with load perturbations.

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Optimal PWM Control of Switched-Capacitor DC–DC Power Converters via Model Transformation and Enhancing Control Techniques

Cited by 37 publications

References 36 publications

High Step-up Active-Clamp Converter with an Input Current Doubler and a Symmetrical Switched-Capacitor Circuit

High Step-up Active-Clamp Converter with an Input Current Doubler and a Symmetrical Switched-Capacitor Circuit

Aware of Life-Time in Lighting Applications by Applying PWM

Alternative control methods for DC–DC converters: An application to a four‐level three‐cell DC–DC converter

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