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This paper presents a new middle-stage current-fed high-frequency link inverter (MSCF-HFLI). The proposed inverter only contains one passive buffering energy element comparing with conventional resonant type HFLI, which at least has two passive buffering energy elements. The topology of the proposed inverter is given and the operational principle in a line-frequency cycle is analyzed, which is similar...
This paper presents High-gain power conditioning system for grid connected PV applications. The construction of the proposed system consists of high-gain Switched Inductor Quadratic Boost Inverter (SIQBI) and five-switch h-bridge inverter. The proposed system is controlled to satisfy the following criteria: extract maximum power from PV module, boost dc voltage to higher level and inject sinusoidal...
This paper is based on a method recently developed by the authors to characterize analytically, without switching angle determination, the voltage harmonic three-phase systems generated by the switching of PWM inverters. On this basis, it is possible to define control strategies that modify the spectral content of the output signals. The presented developments are focused on the carrier phase jump...
In this paper, several control techniques for induction metal treating are examined to assess their performances using resonant series inverter. In fact, many types of steel are treated with heat to increase toughness and resistance to wear. Induction heating seems to be appropriate and provides several advantages in comparison with conventional techniques. In this paper, these techniques are evaluated...
The present paper analyzes the reduction of the double frequent power pulsations in the DC-link of a single phase ZSI by using a passive resonant circuit. Three possible and effective topologies for the resonant circuit have been examined. The advantages and disadvantages of the three versions have been discussed in this paper and validated by measurements on a laboratory set-up.
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