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A novel load current sharing method is proposed for multi-module LLC resonant converters in high power application in this paper. The paralleled system is controlled by the maximum current sharing method to achieve load sharing automatically. Moreover, a series inductor is connected to each LLC output side to restrain the current ripple of double switching frequency. The maximum current sharing method...
This paper proposes a novel integrated power system for electric vehicles (EVs) to improve the power density and efficiency at a less cost. It integrates the on-board charger (OBC) and the low-voltage DC/DC converter (LDC) by common use of semiconductor devices, capacitors and magnetic components. Therefore, the volume and cost of the integrated system is reduced compared with the conventional two...
This paper presents a design method of feedback gain for a network-based control system based on inverter parallel operation. The controller stabilizes the plant in the presence of time-delay less than one control period. According to the theory of asynchronous dynamical system, principle of Lyapunov stability and method of linear matrix inequality is presented. Moreover the model for control feedback...
This paper presents a discrete-time sliding mode controlled current-source inverter (CSI) system used in AC signal power amplifier. A discrete-time sliding mode controller based on a novel reaching condition is adopted, which can force the state vectors into the sliding domain quickly and reduce the chattering of the system greatly. The sliding domain and the sliding surface coefficient are analyzed...
This paper proposed uniform hybrid system models for second-order DC-DC converters working under continuous current mode. Contrast to the averaged and linearized models, no approximation is introduced to the modeling. The direct method of Lyapunov is used to analyze stability of the system and a new sliding mode control strategy is derived from the analysis. Simulation and experiment results are presented...
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