Modeling and controller design of a current-mode controlled converter

Liaw, C.M.; Chiang, S.J.; Lai, Chih-Wei; Pan, Kaida; Leu, Guang-Ching; Hsu, G.S.

doi:10.1109/41.293884

Cited by 27 publications

(15 citation statements)

References 7 publications

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“…An equivalent resistance , which determines the position of , is equal to the value of . Assuming that and have the similar value in steadystate operation, the inverse value of the equivalent resistance in (20) is proportional to the load condition to achieve the compensation zero adjustment. Hence, the exact expression of the compensation zero can be derived in (21).…”

Section: Adaptive Compensation Resistancementioning

confidence: 99%

“…Hence, the exact expression of the compensation zero can be derived in (21). The effects of the output pole on the PM can be effectively alleviated due to the tracking of the compensation zero where and (20) where and (21) Fig. 13 is the simulation result of the adaptive circuit.…”

Section: Adaptive Compensation Resistancementioning

confidence: 99%

“…The control-to-output transfer function of the conventional current mode DC-DC buck converter has two separated real poles, and , [19], [20]. is located at the output of the regulator, that is, where is the output filter capacitor and load resistance is inversely proportional to load current .…”

Section: Proposed Fast Transient Control Procedures With Apmmentioning

confidence: 99%

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Fast Transient (FT) Technique With Adaptive Phase Margin (APM) for Current Mode DC-DC Buck Converters

Lee

Huang

Wang

et al. 2012

IEEE Trans. VLSI Syst.

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This paper proposes a fast transient (FT) control with the adaptive phase margin (APM) to achieve good transient response in current-mode DC-DC buck converters at different load conditions. The overshoot/undershoot voltage and the transient recovery time are effectively reduced. The APM control can always maintain the system phase margin at an adequate value under different load conditions. That is, the compensation pole-zero pair is adapted to load current to extend the system bandwidth and get an adequate phase margin. Experimental results show the overshoot/undershoot voltage is smaller than 60 mV (3%) and transient period is smaller than 12 s as load current suddenly changes from 100 to 500 mA, or vice versa. Compared with conventional designs without any fast transient technique, the undershoot voltage and recovery time are enhanced by 45% and 85%, respectively. Index Terms-Adaptive phase margin (APM), fast transient (FT), loop bandwidth, pole-zero cancellation, stability.

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Section: Adaptive Compensation Resistancementioning

confidence: 99%

Section: Adaptive Compensation Resistancementioning

confidence: 99%

See 1 more Smart Citation

Fast Transient (FT) Technique With Adaptive Phase Margin (APM) for Current Mode DC-DC Buck Converters

Lee

Huang

Wang

et al. 2012

IEEE Trans. VLSI Syst.

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“…The mathematical analysis model of the ball harvesting device built in spherical coordinate system is shown in Figure 1. The original point is located at the center of spherical shell, a is the radius of sphere and the space potential equation of any point P (r, θ, φ) satisfies Laplace's equation: (1) In spherical coordinate system, it is:…”

Section: Principle and Characteristics Analysis Of Spherical Convertermentioning

confidence: 99%

“…However, the energy supply problem has become the main barrier which hinders it to further develop. The high voltage substation and transmission line in the power grid are rich in electromagnetic energy [1]. Thus, it is necessary to develop a wireless energy harvesting device that can collect stray energy in the surrounding environment of a substation, and a conditioning unit that converts the collected power to DC power for wireless sensor.…”

Section: Introductionmentioning

confidence: 99%

Research and Design of Conditioning Units for Wireless Energy Harvesting Device in Smart Grid

Ye¹,

Wang²,

Tian³

et al. 2018

dteees

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With the rapid development of Chinese power industry, the wireless sensor technology has become an important part of realizing the intelligent construction of the power grid. However, the problem, that how to convert the energy collected by wireless storage device into stable DC output for wireless sensors, has limited the large-scale of wireless sensor. Therefore, it is an urgent need to design conditioning units for wireless energy harvesting device. According to the actual situation of the substation and the lower efficiency of traditional energy harvesting device, this research has proposed a new type of spherical capacitive energy converters topology, and designed energy collected and accelerated circuit and the PWM double-loop controlling and conditioning circuit with rectifier, storage and voltage regulation function. Besides that, the main parameters have been determined by theoretical calculation, and the conditioning circuit is simulated by PSIM simulation software. The simulation results verify the effectiveness of the mentioned topology and parameter selection method.Keywords: wireless sensor, conditioning unit, energy collected and accelerated circuit, isolated fly-back conditioning circuit. INTRODUCTIONAdvanced sensing and measurement technology is required to accomplish the normal operation of intelligent monitoring and diagnosis in smart grid. However, the energy supply problem has become the main barrier which hinders it to further develop. The high voltage substation and transmission line in the power grid are rich in electromagnetic energy [1]. Thus, it is necessary to develop a wireless energy harvesting device that can collect stray energy in the surrounding environment of a substation, and a conditioning unit that converts the collected power to DC power for wireless sensor. The energy collection unit converts the spatial electromagnetic energy in the substation into electric energy. In this article, a new type of spherical capacitive energy converter topology is proposed to collect the electric field _______________________

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Current‐Mode Control

2013

Pulse‐Width Modulated DC–DC Power Converters

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Modeling and controller design of a current-mode controlled converter

Cited by 27 publications

References 7 publications

Fast Transient (FT) Technique With Adaptive Phase Margin (APM) for Current Mode DC-DC Buck Converters

Fast Transient (FT) Technique With Adaptive Phase Margin (APM) for Current Mode DC-DC Buck Converters

Research and Design of Conditioning Units for Wireless Energy Harvesting Device in Smart Grid

Current‐Mode Control

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