Analysis, modeling, design and implementation of average current mode control for interleaved boost converter
22 Apr 2013-pp 280-285
TL;DR: Small signal modeling approach is used to develop an analytical model for average current-mode controlled interleaved boost converter and the experimental results are presented to evaluate the derived model and performance of designed controller.
Abstract: In high power applications, parallel operation of boost converters is recommended. These paralleled boost converters can be operated in interleaved mode. Interleaved mode of operation improves the steady state and dynamic performance of the system. In this work, small signal modeling approach is used to develop an analytical model for average current-mode controlled interleaved boost converter. The controller is designed and implemented for a 500 W interleaved boost converter prototype. The experimental results are presented to evaluate the derived model and performance of designed controller.
Citations
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TL;DR: In this paper, a simple novel control strategy is designed and analyzed for a hybrid energy storage system (HESS), where batteries are used to balance the slow changing power surges, whereas super-capacitors (SC) are used by diverting the power surges to the SC system.
Abstract: In this paper, a simple novel control strategy is designed and analyzed for a hybrid energy storage system (HESS). In the proposed method, batteries are used to balance the slow changing power surges, whereas supercapacitors (SC) are used to balance the fast changing power surges. The main advantage of the proposed control strategy is that, the slow response of battery system including dynamics of battery, controller, and converter operation, is overcome by diverting the power surges to the SC system. The proposed method inherits charge/discharge rate control to improve the life span and reduce the current stresses on battery. The proposed method features less computational burden as it uses simple control strategy. The detailed experimental results presented validate the proposed control strategy for sudden changes in photovoltaic (PV) generation and load demand.
295 citations
Cites background from "Analysis, modeling, design and impl..."
...much lesser than right half plane zero frequency [19] of SC....
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TL;DR: In this article, a new control scheme is proposed to control the power sharing between batteries and supercapacitors to match the generation-demand mismatch and regulate the grid voltage, which not only improves the dc grid voltage regulation capability but also reduces the stress levels on the battery and hence increases the life span of the battery.
Abstract: The power generation from renewable power sources is variable in nature, and may contain unacceptable fluctuations in case of the wind power generation. High fluctuations in power generation may negatively impact the voltage stability of the microgrid. This problem can be alleviated by using hybrid energy storage system consisting of batteries and supercapacitors (SCs) at dc grid. A new control scheme is proposed to control the power sharing between batteries and SCs to match the generation-demand mismatch and hence to regulate the grid voltage. In the proposed control strategy, the SC supplies error component of the battery current in addition to the fast transient power demand. This added feature not only improves the dc grid voltage regulation capability but also reduces the stress levels on the battery and hence increases the life span of the battery. The main advantage of the scheme is that, the uncompensated power due to slow dynamics of the battery is diverted to the SC and keeps the state of charge within the limits for longer duration, as compared to the conventional strategy. The proposed scheme is validated through detailed experimental studies.
148 citations
Cites background from "Analysis, modeling, design and impl..."
...To operate the system in stable region, the converter bandwidth has to be operated much lesser than the right half plane zero frequency (fRHPZ ) [44] of the supercapacitor...
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TL;DR: The proposed compensation for PI controller managed hybrid energy storage systems (HESSs) provides for improved DC bus regulation with minimal battery stress levels and redirections of unwaged battery currents to SCs for fast compensations in the proposed PMS enhances battery life span.
53 citations
TL;DR: In order to achieve a fast and accurate analysis and design, a generalized method is developed for the calculations of required phase inductance and output capacitance and a genetic algorithm (GA) optimization method is implemented for the inductor design.
Abstract: High-power boost converters offer significant benefits to hybrid and electric vehicles, because higher-voltage propulsion power equates to lower motor losses. However, the converters themselves must have high efficiency and high power density in order to make the system-level trade-off beneficial. Thus, this paper presents an optimized design process of high power multi-phase interleaved bidirectional boost converters. In order to achieve a fast and accurate analysis and design, a generalized method is developed for the calculations of required phase inductance and output capacitance. In addition, a genetic algorithm (GA) optimization method is implemented for the inductor design. Using the proposed design process, a 3-phase 60 kW interleaved converter is designed and tested using paralleled SiC MOSFETS. The converter achieves peak efficiency of 99.2% at 10 kW and is $>$ 98% efficiency from 5% to 100% load. The resulting power density is 9.4 kW/L, which can be further improved to 12.2 kW/L with alternate terminal connectors.
37 citations
TL;DR: A step-up/step-down converter for fuel cell vehicle applications, which effectively operates in step- up or step-down mode when the fuel cell voltage is lower or higher than the output voltage of high-voltage direct current bus, is proposed in this paper.
35 citations
References
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TL;DR: In this paper, a solid duty control (SDC) technique was proposed for boost converters to maintain a constant duty value and reduce dip voltage during load transient periods, which can provide stable and regulated output for edge-lit light-emitting diode backlight systems.
Abstract: This paper proposes a solid-duty-control (SDC) technique for application in boost converters to maintain a constant duty value and reduce dip voltage during load transient periods. Fast transient response was also achieved because of the variable transient enhancement controller. The proposed SDC technique can provide a stable and regulated output for edge-lit light-emitting diode backlight systems. This converter was used in a 0.25-μm CMOS process. Experimental results show that compared with a conventional design without a fast transient technique, the proposed approach yields about 30% and 80% improvement in undershoot voltage and recovery time, respectively, as load current changes from 50 to 250 mA.
34 citations
"Analysis, modeling, design and impl..." refers background in this paper
...Although, it is well known for its simple construction, and higher conversion efficiencies, the dynamic performance is poor due to the effect of right half plane zero (RHPZ) [1]&[2]....
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TL;DR: A new solution for a battery discharge regulator for high-power space applications (power-per-module ≥ 5 kW) using a high-efficiency step-up converter using two interleaved boost converters with passive soft switching is presented.
Abstract: This paper presents a new solution for a battery discharge regulator for high-power space applications (power-per-module ≥ 5 kW) using a high-efficiency step-up converter. Basic requirements are efficiency that is higher than 97%, mass that is lower than 2.5 kg, no galvanic isolation necessary, and a high mean time between failures. By taking into account all these parameters, the selected topology has been two interleaved boost converters with passive soft switching. Small-signal analysis of these two interleaved boost converters is also presented.
25 citations
"Analysis, modeling, design and impl..." refers background in this paper
...These paralleled converters can be operated in interleaved mode [3]&[4], where interleaving is process of operating boost converters in parallel, with a phase shift between their gate drive signals....
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...Moreover, in interleaved boost converter the effect of RHPZ is reduced when compared to conventional boost converter [3]&[5]....
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...Peak currentmode control mode control for interleaved boost converter is reported in [3]....
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18 Mar 2010
TL;DR: In this paper, a DC/DC converter is used to control the power on the main bus of a spacecraft and demonstrates that this converter can cope with the very demanding requirements needed.
Abstract: When a DC/DC converter is used to control the power on the main bus of a spacecraft it needs to comply with highly demanding requirements from the dynamic point of view. Hence, converters with very good dynamic performance, i.e. with no zero on the right-half plane are typically used. The conventional boost converter has not been used in European space applications mainly because of its poor dynamics. This paper addresses the way of using a boost converter in this application and demonstrates that this converter can cope with the very demanding requirements needed. A prototype has been built and tested to proof it.
21 citations