Switching Control of Buck Converter Based on Energy Conservation Principle

Wang, L.; Tao, Yukun; Tang, Wenhu

doi:10.1109/tcst.2015.2505625

Cited by 20 publications

(4 citation statements)

References 16 publications

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“…Similar to that of a buck converter [12], the energy conservation in a boost converter, shown in the dotted box of Fig. 1, means that, at the end of each switching cycle, the energy fed into a circuit W in is equal to the sum of the output energy Wout assuming by the whole C and R and the energy losses in the circuit.…”

Section: Energy Balance In the Circuit Of Boost Pfc Rectifiermentioning

confidence: 99%

A Novel Control Method for Hybrid Conduction Mode Boost PFC Rectifier

Wang

Tang

et al. 2022

Preprint

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In this paper, a novel control method is proposed based on energy balance principle in the circuit for hybrid conduction mode (HCM) boost power factor correction (PFC) rectifier. The proposed control method is universal for both the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM). With this superiority, no mode transition is needed inside one mains half-cycle when operating in HCM, and thus high-quality input current can be achieved. And the proposed control method is simple to implement but rather effective. Simulation results show significant improvement compared with conventional control methods.

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Section: Energy Balance In the Circuit Of Boost Pfc Rectifiermentioning

confidence: 99%

A Novel Control Method for Hybrid Conduction Mode Boost PFC Rectifier

Wang

Tang

et al. 2022

Preprint

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“…For an example of cascaded unit 1, the control equation of the EBC controller 1 is derived as follows. From Figure 2, it can be seen that the part of the dotted box can be regarded as a buck circuits: the circuit, constructed by u 1 , S 11 , S 12 , L, C. Then similar to that of [24], the control principle of the EBC controller 1 is that, by keeping the balance between the energy injected into the circuit from DC sources W in1 (k) and the sum of the output energy W out1 (k) and the energy the inductor L stores ∆W (k) in a switch cycle, e.g., the k th switching cycle [(k − 1)T s , kT s ) [24], the EBC controller forces the output voltage to be a desired value , as…”

Section: The Design Of the Cps Ebcmentioning

confidence: 99%

Energy Balance Control of a Cascaded Multilevel Inverter for Standalone Solar Photovoltaic Applications

Wang

Tang

2017

Energies

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This paper presents a clock phase-shifting (CPS) energy balance control (EBC) method for cascaded half-bridge multilevel inverters in standalone solar photovoltaic (PV) systems. It is based on the conservation of energy in each cascaded unit. By shifting the phase of the clock pulse of each cascaded unit, a staircase-like output voltage is obtained. The CPS EBC not only regulates the staircase-like output voltage of the cascaded multilevel inverters accurately under static conditions, but also suppresses the fluctuations of DC sources and improves its dynamic responses to load steps. Thus, the problems existing in solar PV systems using the cascaded multilevel inverters are avoided. Results obtained from simulations and experiments are presented to verify the feasibility and advantages of the proposed control method.

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“…To overcome these disadvantages of a supercapacitor bank standalone system, methods of keeping the output voltage constant have been proposed [27,[31][32][33]. These studies are very useful but complicated to use.…”

Section: Introductionmentioning

confidence: 99%

DC Voltage Source Based on a Battery of Supercapacitors with a Regulator in the Form of an Isolated Boost LCC Resonant Converter

Kang,

Lee,

Rhee

et al. 2023

Energies

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Studies have been conducted on Energy storage systems (ESS) that replaced lithium-ion batteries (LIB) by the thermal runaway of the existing LIB. Using only the supercapacitor (SC) as a direct current power source in applications such as supercapacitor-based ESSs and mobile electric vehicle charging stations (MCSs) reduces the output voltage of the SC linearly. To solve this problem, this paper combines a boost converter capable of achieving regulatable constant voltage from an input of an SC bank to an output of a rectifier and an inductor/capacitor/capacitor (LCC) resonance converter. In this paper, an electrical double-layer capacitor (EDLC) known as SC was constructed as 64.8-V 400-FEDLC for experimental analysis. This EDLC is a high-capacity EDLC bank using 120 EDLCs with 30 serial connections and 4 parallel connections. In addition, resonance compensation circuits are analyzed and designed using a first-order harmonic approximation method (FHA). The analysis shows that the LCC resonance compensation converter is more suitable for EDLC standalone systems as an energy storage system, for LCC resonance converter topologies combined with EDLC discharge characteristics, constant voltage discharge is designed under an efficient discharge strategy, i.e., variable load conditions after the first constant voltage discharge. Based on LCC compensation analysis, the system has an optimum frequency, which allows the system to operate at the maximum efficiency point. By combining constant voltage power characteristics, constant voltage power becomes the same as the optimal power point, and thus high efficiency could be maintained in the constant voltage stage. Finally, the above design is verified through experiments.

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Switching Control of Buck Converter Based on Energy Conservation Principle

Cited by 20 publications

References 16 publications

A Novel Control Method for Hybrid Conduction Mode Boost PFC Rectifier

A Novel Control Method for Hybrid Conduction Mode Boost PFC Rectifier

Energy Balance Control of a Cascaded Multilevel Inverter for Standalone Solar Photovoltaic Applications

DC Voltage Source Based on a Battery of Supercapacitors with a Regulator in the Form of an Isolated Boost LCC Resonant Converter

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