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This paper presents the theoretical analysis, design and simulation of a single phase single stage boost dc-ac converter powered from PV array. The main attribute of the boost inverter topology is the fact that it generates an ac output voltage larger than the dc input one, depending on the instantaneous duty cycle. This paper proposes an accurate solar panel simulation to incorporate the temperature...
This paper proposes a two stage boost converter circuit for the grid connected photovoltaic system. Each stage is controlled separately by opposite pulse width modulated signal. Due to nonlinear I-V characteristic of the photovoltaic cells, the converter circuit is designed for the range of input voltage 35 to 60 V, 350 V output voltage and maximum output power of 525 watt. Dynamic modeling of the...
This paper describes how a free circuit simulation software can assist in teaching the principles of power electronics to undergraduate students. The authors have used Solver for EQuations with User defined ELements (SEQUEL) as an aid to teaching basic power electronics course to undergraduate students at the authors' institute. Using SEQUEL as an aid in teaching-learning process has increased students'...
This article presents a new current-mode squarer based on MO-CCTA (multiple output current conveyor transconductance amplifier). The circuit description is very simple, its construction consists of merely 2 MO-CCTAs. Without external passive elements, the proposed circuit is then suitable for IC architecture. The PSPICE simulation and experimental results are depicted, and agree well with the theoretical...
Switched mode power supplies (SMPS) have become an indispensable part of modem electronic systems. In this paper, a generalized MATLAB/SIMULINK modeling techniques is presented. The proposed techniques have been successfully integrated into SMPS design course at Lunghua University, Taiwan. The main objective of the course is to teach final year undergraduate students and first year Master's students...
This paper describes a digital proportional-integral-derivative (PID) controller technique applied to the DC-DC buck converter. The converter is modelled using a state space averaging technique. Due to the non-linear of the power converter, the PID controller is designed to simplify the compensation of the DC-DC converter. The control algorithm is implemented in digital signal processor (DSP) TMS320F2812...
This paper presents a novel model for average current control that can be applied to the buck-cascaded buck-boost converter (BuCBB) with two independently controlled switches in universal input power factor correction (PFC) circuits. The proposed BuCBB PFC model consists an averaged BuCBB topology with all the switching elements replaced by dependent sources and an average current control scheme with...
The small signal model of a smart power IC is one of the most important elements for a power system design. This paper presents a measurement-based small signal modeling method for the smart power IC. This method is referred to as sampling the duty cycle output and the control signal input of the smart power IC with the ICpsilas switching frequency. The duty ratio and the control signal are converted...
This paper presents the build and validation of real time digital simulation (RTDS) model for testing control and protection system of Lingbao back-to-back (BTB) high voltage direct current (HVDC) converter station which links between Northwest China and Central China power network. The build of power circuit model and the design of model parameters associated with actual power system are described...
Aiming at strong nonlinearity and complexity of higher order switching converters, an integrative modeling method was proposed by integrating the state-space average modeling approach with the discrete-time modeling approach, based on which, stability analysis of current-mode controlled higher order switching converters was carried out, and the relation between the stability and the circuit parameters...
This paper proposes an input-paralleled output-paralleled half-bridge converter based on single half-bridge converter, which is very suitable for the low output voltage and large output current application. All modules share a common capacitor-leg, that can reduce the number of main circuitpsilas capacitors and make topology simple. The traits and rules of combination converter are introduced and...
The new converter transformer, that is the auto-compensation and harmonic-shielding converter transformer, adopts the self-coupling wiring for the secondary windings, and there is a tap at the linking point of the coupling windings, which is connected with the inductive filters. Compared with the traditional converter transformer, the electromagnetic transient state of the new converter transformer...
Driven by the compulsory requirement of dilution the deleterious gas immediately in coal well underground laneway for safety production, a novel pulse density modulation (PDM) HF converter for the mining local fanner is introduced in the paper. In this PDM converter, the high frequency technique is employed to minimize the converter cubage owing to the limitation of the small work space in the underground...
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