M. Phattanasak

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This paper deals with a hybrid energy source consisting of a proton exchange membrane fuel cell, two storage devices, and a load. Generally, this type of source constitutes of nonisolated dc-dc converters. In order to have galvanic isolation for safety reasons and a high voltage ratio, we introduce another system based on the use of three-port isolated(More)
This paper presents a control algorithm for dc-bus stabilization in weak network that uses a Li-ion battery as the battery substation. The battery modules connected with 2-quadrant 4-phase parallel converter with interleaved technique. In this paper, a nonlinear control algorithm based on the flatness properties of the system is proposed. Using the flatness(More)
In this paper, an analysis of two-phase interleaved boost converter working in both CCM and DCM is presented. This kind of DC-DC converters is usually used as a bridge to increase the output voltage level to a suitable one compared to the input voltage like fuel cell converter. Interleaving technique can be used to reduce current ripples of DC-DC converter(More)
In this paper, a transformer for an N-port isolated bidirectional DC-DC converter is presented. This converter can be used in hybrid renewable energy systems where many of energy sources and storage devices and load are required. The final model allows simple calculation of the exchanged power between ports. The example of three-winding transformer for a(More)
A novel circuit for realizing floating inductance, floating capacitance, floating frequency dependent negative resistance (FDNR) and grounded to floating admittance converter depending on the passive component selection is proposed in this paper. The proposed simulator employs second-generation current-controlled current conveyors (CCCIIs), differential(More)
In this paper, a nonlinear control algorithm for a current-fed DC-DC is presented. This converter consists of an inductor, a controllable full-bridge converter, which is connected to a full-bridge rectifier via a high-frequency transformer. The advantages of this converter include galvanic isolation, high voltage gain and low input current ripple. Based on(More)
This paper describes a method to control a boost converter with LC input filter working under continuous conduction mode. The idea of this method relies on Lyapunov stability criterion. All state variables are controlled in the same times. Therefore, the responses of this controlled system are fast. However, since the output command signal is generated(More)
This paper presents a comparative study of two control methods for a system comprising a dc source fed power to load via an LC input filter and a boost converter: indirect sliding mode control and flatness based control. Using indirect sliding-mode, the instabilities can be occurred. An active stabilizer is embedded in the system to extend the stability(More)
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