Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter

Restrepo, Carlos; Konjedic, Tine; Calvente, J.; Milanovič, M.; Giral, Roberto

doi:10.1109/tpel.2012.2231882

Cited by 50 publications

(24 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Fig. 8 shows the small-signal block diagram of the State Space Averaged (SSA) model of the modular buck-boost converter with its corresponding Average Current-mode Control (ACC) [38], which is an analogue PI controller with an additional pole. Additionally, the continuous control variable u(t) is related with the duty cycles d 1 (t) and d 2 (t) of MOSFETs Q 1 and Q 2 in Fig.…”

Section: Energy Management Descriptionmentioning

confidence: 99%

“…5 [36]. Its advantageous features include high power conversion efficiency, wide bandwidth, the possibility of controlling either the input and output voltages or currents [37] and achieving fast and smooth transitions when changing the control objective from controlling the input current to control the output current and vice-versa [38]. This module has been used previously in a simple FC series hybrid topology [39].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy Management of a Fuel-Cell Serial–Parallel Hybrid System

Ramírez-Murillo

Restrepo

Calvente

et al. 2015

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

In this work, a serial-parallel hybrid (SPH) power system formed by a Fuel Cell (FC), an Auxiliary Storage Device (ASD) and the current-controlled dc-dc converters responsible for the power management are realized by using the Digital Signal Controller (DSC) TMS32F28335. The main energy management goal is to transfer energy from the sources (FC or ASD) to the load while ensuring dc bus voltage regulation and high power conversion efficiency. In addition, a safe and reliable operation of the system has to be achieved. The selected converter and its controller features are: non-inverting voltage step up and step down, high efficiency, input and output currents regulation an low ripple values, and the ability to change from input to output current regulation loop, suddenly and smoothly, and vice versa. All these features allow it to be positioned in different FC system localizations and simplifies the design of the master control. Simulation and experimental results have been validated on a 48-V, 1200-W dc bus.

show abstract

Section: Energy Management Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Management of a Fuel-Cell Serial–Parallel Hybrid System

Ramírez-Murillo

Restrepo

Calvente

et al. 2015

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The modular buck-boost converter used in these research works, whose schematic circuit is shown in Fig. 1, was proposed in [8] along with the current control proposed in [9] and improved in [32], where it has been input/output current regulated following classical rules [33] [34] [35] [36]. The FC topologies mentioned earlier have the zero crossing saturation problem in the low-level analog current controllers, which causes a potential instability of the dc bus voltage, with a duration of 1 or 2 ms.…”

Section: Introductionmentioning

confidence: 99%

LMI Control Design of a Non-Inverting Buck-Boost Converter: a Current Regulation Approach

Murillo¹,

Huertas²,

Pinzón³

et al. 2017

TECCIENCIA

Self Cite

View full text Add to dashboard Cite

This paper presents an analytical study of an input current-mode control based on a linear matrix inequalities (LMI) for a noninverting buck-boost converter. The LMI control technique makes better the dynamic response of this converter in comparison with previous research works, where its currents has been regulated using a classical analogue PI controller with an additional pole. The main features of the selected converter are its voltage step-up and step-down properties, high efficiency, wide bandwidth and low input and output current ripples. All of these converter's properties allows it to be used as a modular converter capable of being positioned at any converter locations in hybrid systems, which are formed by varying-voltagesources, current controlled dc-dc converters and auxiliary storage devices such as batteries or capacitors. The designed statefeedback controller has the following aims, among others: pole placement constraints, control effort limitation, and decay rate and bandwidth improvement. The use of state-space averaging (SSA) method allows to describe LMI constraints which guarantees stability and provide good performances under a close loop pole region and control signal bound. The theoretical analysis have been simulated by means of Matlab and PSIM on an 800-W coupled-inductor buck-boost dc-dc switching converter.Keywords: Coupled Inductors, Current Control, DC-DC Power Converters, Linear Matrix Inequality (LMI), Non-Inverting Buckboost Converter. ResumenEste artículo muestra un estudio analítico de control de entrada de modo-corriente basado en Desigualdades Lineales Matriciales (DLM) para un convertidor no-inversor buck-boost. La técnica de control DLM mejora la respuesta dinámica de este convertidor en comparación con trabajos de investigación anteriores, donde las corrientes han sido reguladas usando un controlador clásico análogo PI con un polo adicional. Las principales características del convertidor seleccionado son sus propiedades de subir y bajar por paso, alta eficiencia, amplio ancho de banda y bajas oscilaciones de corrientes de entrada y salida. Todas estas propiedades permiten que el convertidor sea usado de manera modular, siendo capaz de ser posicionado en cualquier posición de convertidor en sistemas híbridos, los cuales son conformados por fuentes de voltaje variable, convertidores dc-dc controlados por corriente, dispositivos de almacenamiento auxiliares como baterías y capacitores. El controlador de estado de retroalimentación diseñado tiene los siguientes objetivos, entre otros: restricciones de la ubicación del polo, limitación en el esfuerzo de control, tasa de decaimiento y mejora en ancho de banda. El uso del método de promedio en espacio de estado (PEE) permite describir restricciones DLM que garantizan la estabilidad y proveen buen rendimiento en una región de polo de ciclo cerrado y sujeto a la señal de control. El análisis teórico fue simulado usando Matlab y PSIM en un convertidor conmutable dc-dc buck-boost de inductor acoplado de 800-W.

show abstract

“…When the TSBB converter operates in continuous current boost mode, it presents a right-half-plane zero. This RHP zero limits the bandwidth of the control loop, penalizing the transient response [15]. Moreover, in the two-mode control scheme with automatic mode-switching, only one voltage regulator is used for both buck and boost modes, and it is often designed to have enough phase margin in boost mode by reducing the bandwidth of the control loop, thus the transient responses of this converter are deteriorated in the whole input voltage range, including both buck and boost modes.…”

Section: Introductionmentioning

confidence: 99%

A PQ Improved High Efficiency, High Power Operated Single-Phase Variable Input Fed Two Switch Buck Boost Dc- Dc Converter

Saxena¹

2017

IJRASET

View full text Add to dashboard Cite

On the other hand, we can get a variable DC voltage from a fixed DC source by using DC-DC converter. There are so many types of dc-dc converters available, Buck converter-to get the reduced output voltage. Boost converter-to get the output voltage more than input. Buck-Boost-to do both the operations buck and boost. Normally, buck-boost converter consists of single switch to do both the operations buck and boost according to MATLAB simulation model of Buck Boost DC-DC converter, according to the duty cycle of the gate pulse. Single switch buck-boost converter produces an inverting output with respect to input. This is a disadvantage of this converter. To get a non-inverting output voltage the converter is designed with two switches one for buck operation and another one for boost operation. The two mode control is achieved by implementing the input feed forward method. According to the input voltage level, buck or boost switch is selected.[2], [3] There are two active switches in the TSBB converter, which provides the possibility of obtaining various control methods for this converter. If Q1 and Q2 (switches) are switched ON and OFF simultaneously, the TSBB converter behaves the same as the single switch buck-boost converter. This control method is called one mode control scheme.[12] Q1 and Q2 can also be controlled in other manners. For example, when the input voltage is higher than the output voltage, Q2 is always kept OFF, and Q1 is controlled to regulate the output voltage, and as a result, the TSBB converter is equivalent to a buck converter, and is said to operate in buck mode. On the other hand, when the input voltage is lower than the output voltage, Q1 is always kept ON, and Q2 is controlled to regulate the output voltage, and in this case, the TSBB converter is equivalent to a boost converter, and is said to operate in boost mode. Such control method is called two-mode control scheme. [13]

show abstract

Fast Transitions Between Current Control Loops of the Coupled-Inductor Buck–Boost DC–DC Switching Converter

Cited by 50 publications

References 3 publications

Energy Management of a Fuel-Cell Serial–Parallel Hybrid System

Energy Management of a Fuel-Cell Serial–Parallel Hybrid System

LMI Control Design of a Non-Inverting Buck-Boost Converter: a Current Regulation Approach

A PQ Improved High Efficiency, High Power Operated Single-Phase Variable Input Fed Two Switch Buck Boost Dc- Dc Converter

Contact Info

Product

Resources

About