High-Efficiency Bidirectional DAB Inverter Using a Novel Hybrid Modulation for Stand-Alone Power Generating System With Low Input Voltage

Cho, Yong Won; Cha, Woo-Jun; Kwon, Jung-Min; Kwon, Bong-Hwan

doi:10.1109/tpel.2015.2476336

Cited by 97 publications

(24 citation statements)

References 24 publications

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“…The dual active bridge converter is a kind of DC-DC converter that have bidirectional power flow, galvanic isolation with high frequency transformer, high efficiency and high density features [8,11,12]. The DAB is a converter based on two active bridges interconnected through a high frequency transformer as depicted in Fig.…”

Section: Operating Principle Convertermentioning

confidence: 99%

Online PSO-tuned phase shift angle controller for dual active bridge DC–DC converter

et al. 2019

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The deep concern towards efficient and green energy has brought to the development of intermediate energy storage system. Electric vehicles (EVs), for example, is an application where the energy storage devices are vital. In EV, the bidirectional DC-DC converter is high in demand due to its nature EV of having two or more separate DC sources. A recent technology called the dual active bridge (DAB) converter has quickly become popular in DC-DC converter thanks to its inherent galvanic isolation via a high-frequency transformer. Furthermore, DAB topology allows for high-efficiency conversion and soft switching adaption. This paper presents the optimization of the phase shift angle controller of DAB using Particle Swarm Optimization (PSO). From the preliminary study, it was found out that the optimization performs well until there are abrupt changes in the system. The system is not able to respond to the reference voltage step change as the traditional one-time execution PSO have local optima entrapped in react to the changes. The paper proposes a reset function to allow PSO to identify that its current optimized value is not optimal anymore. This drives PSO to look for a new optimal value to improve DAB's overall dynamic performance. Simulation of the modified PSO is done on a 200 kW DAB system with 20 kHz switching frequency is developed in MATLAB/Simulink environment. Simulation has been carried out with the objective to minimize the steady-state error as well as to improve the dynamic performance of the DAB. The DAB performance with the proposed solution is evaluated in terms of steady-state error and transient response by testing the system under various reference voltage and step-change input voltage. The self-excited re-exploration PSO also have been presented as to respond to the reference voltage step change as the basic PSO have local optima entrapped in react to the changes. In order to validate the simulation results, a hardware-in-the-loop (HIL) experimental circuit is built in Typhoon HIL-402 to verify the dynamic response and the steady state performance of the system.

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Section: Operating Principle Convertermentioning

confidence: 99%

Online PSO-tuned phase shift angle controller for dual active bridge DC–DC converter

et al. 2019

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“…At present, there are few researches on high frequency isolated multi‐level inverter (HFI‐MLI), since the line‐frequency transformer is too large to be accepted and the high frequency one puts forward new requirements to the topology structure and control strategy. In [10], the push–pull HFI inverter is obtained by the combination of dual‐active‐bridge (DAB) converter and full‐bridge inverter. Using multi‐level NPC inverter instead of full‐bridge, push–pull HFI‐MLI is obtained.…”

Section: Introductionmentioning

confidence: 99%

Novel multi‐level inverters with flyback high frequency link

Guan

Zhang

2020

IET power electron.

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“…With wide bandgap devices and sinusoidal charging [22], high power density (3.3kW/L) and high efficiency (> 97%) [25] can be achieved. Other applications including ESS interface converters [26], [27], airborne wind turbine [28], uninterrupted power supply (UPS) [29], and power load emulator [30] have also been reported.…”

Section: Introductionmentioning

confidence: 99%

Circulating Current and ZVS-on of a Dual Active Bridge DC-DC Converter: A Review

et al. 2019

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Dual active bridge (DAB) dc-dc converters have several attractive features including autoadjust bidirectional power flow, wide voltage gain range, and zero voltage switching (ZVS)-on capability. Various applications based on DAB including solid-state transformer in power grids and traction, energy storage system, and electric vehicle on-board chargers have been proposed by academics. Nevertheless, industrial applications based on DABs are still seldom mainly due to the circulating current and loss of ZVS problems under certain load and voltage gain conditions. There is an intensive research effort underway to solve these problems recently. This paper presents the state-of-the-art view in the cause of circulating current and loss of ZVS and surveys the solutions to these problems. INDEX TERMS Circulating current, dc-dc converter, dual active bridge, reactive power, ZVS-on.

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High-Efficiency Bidirectional DAB Inverter Using a Novel Hybrid Modulation for Stand-Alone Power Generating System With Low Input Voltage

Cited by 97 publications

References 24 publications

Online PSO-tuned phase shift angle controller for dual active bridge DC–DC converter

Online PSO-tuned phase shift angle controller for dual active bridge DC–DC converter

Novel multi‐level inverters with flyback high frequency link

Circulating Current and ZVS-on of a Dual Active Bridge DC-DC Converter: A Review

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