Hybrid Modulation for Dual-Active-Bridge Bidirectional Converter With Extended Power Range for Ultracapacitor Application
By Haihua Zhou, Ashwin M. Khambadkone. 2009
280 citations recorded by the source corpus.
In order to actively control the power flow between the load and ultracapacitor, a dual-active-bridge converter can be utilized. Conventional phase-shift modulation (PSM) has difficulties in working with a wide range of source voltage levels and load power levels. In addition, a traditional PI controller does not provide satisfactory behavior as the relation between the control variable and output voltage is nonlinear. In this paper, a hybrid modulation scheme is proposed to extend the power range of operation from 100% to 16.67% instead of 100% to 58.33% that is achieved by conventional PSM. A feedback-linearized controller is also designed to achieve a better dynamic response under various load conditions. The details of the modulation principle and controller design are given, and the experimental results verify the proposed modulation and control scheme.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/ac5b066aece89e017cb5f225aa4b0f00d1920cf0
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Citations in the corpus
- A Single-Stage Dual-Active-Bridge-Based Soft Switched AC–DC Converter With Open-Loop Power Factor Correction and Other Advanced Features (2014, background): “together resulting in triangular shape current waveform [23], [24].”
- Design and Performance of a Bidirectional Isolated DC–DC Converter for a Battery Energy Storage System (2012, background): “The advantages of the converter have made it attractive for high-power automotive applications [7]–[9] and utility applications [10]–[12].”
- Dead-Time Effect of the High-Frequency Isolated Bidirectional Full-Bridge DC–DC Converter: Comprehensive Theoretical Analysis and Experimental Verification (2014, unknown): “The authors in [5]–[7], [21] and [22] proposed a family of hybrid optimized control algorithm for the IBDC to improve the circulating current characteristics, decrease current stress, enhance power transmission capacity and so on.”
- Generalized Average Modeling of Dual Active Bridge DC–DC Converter (2012, unknown): “Recent advancements in dc– dc DAB converters include design optimization [7], a detailed model to evaluate power loss [5], PWM control schemes [8], advanced modulation schemes [9], advanced switching strategies to reduce loss [10]–[12], and detailed models to address some parasitic nonlinear effects”
- A Soft Switching Three-phase Current-fed Bidirectional DC-DC Converter With High Efficiency Over a Wide Input Voltage Range (2012, methodology): “A hybrid modulation method is applied to extend power range for ultracapacitor application in [14], in which a proposed triangular modulation and common phase shift modulation are applied together to increase the power transfer range with wide input voltage.”
- Universal High-Frequency-Link Characterization and Practical Fundamental-Optimal Strategy for Dual-Active-Bridge DC-DC Converter Under PWM Plus Phase-Shift Control (2015, methodology): “In order to solve the aforementioned problem, PWM plus phase-shift (PPS) control is an effective method, such as extended-phase-shift (EPS) proposed in [7], dual-phase-shift (DPS) proposed in [8], and triple-phase-shift and hybrid-phaseshift proposed in [9]–[11].”
- Closed Form Solution for Minimum Conduction Loss Modulation of DAB Converters (2012, background): “2) Characteristics of the DAB in Steady State Operation: calculation of the impact of dead time intervals and semiconductor losses on the power transferred [8]; converter operation at low power levels [9]; accurate prediction of the power losses of the DAB [4].”