A buck–boost-type unity power factor rectifier is proposed in this paper. The main advantage of the proposed rectifier over the conventional buck–boost type is that it can perform input power factor correction (PFC) over a wider voltage conversion range. With a single switch, a fast well-regulated output voltage is achieved with a zero-current switch at turn-on. Moreover, the switch voltage str...

This paper presents the comparative analysis of improved quality three phase AC/DC boost converters, using SIMULINK. Comparison of three phase controlled single switch and six switch AC/DC boost converters have been done to identify the boost converter with low cost/small size/high efficiency for three phase system. Three phase AC/DC boost converters with improved quality in terms of power fact...

This paper presents a buck-boost converter-based bipolar pulse generator, which is able to generate bipolar exponential pulses across a resistive load. The concept of the proposed approach depends on operating the involved buck-boost converters in discontinuous current conduction mode with high-voltage gain and enhanced efficiency. A full design of the pulse generator and its passive components...

In this paper, KY converter and voltage gain enhanced KY converter are included. A KY converter is a voltage step up converter, it can be considered as a buck converter along with synchronous rectification. In general, a KY converter consists of two MOSFET switches. To obtain higher voltage gain we can adopt different methods. Some of these techniques, advantages and disadvantages of each metho...

207 Abstract— A digital PWM controller for Buck-boost converter is designed using MATLAB-Simulink. The mathematical model of PWM controller is derived to design in MATLAB simulation model. In this Proposed model, the digital PWM controller is used to obtain the positive ouput voltage from the buck boost converter in the range of 101V from the variable input voltage of 50-200V. The proposed mode...

. Abstract: This paper presents a Fuzzy sliding mode controller (FSMC) used as a control technique for a Single phase AC/DC boost PFC converter for achieving high power factor and regulated voltage. The controller possesses the merits of both fuzzy controller and variable structure controller. The considered controller has advantages such as robustness when there is a large line and load variat...

This paper presents development of an optimal control strategy for a hybrid photovoltaic/battery energy storage (PV/BES) system. The fluctuations at the DC bus voltage due to voltage sag were mitigated by using charge/discharge capability of the BES through the DC/DC buck/boost converter. Furthermore, an optimization of system control parameters responsible for DC bus voltage regulation within ...

A new "model-free" control methodology is applied to a boost power converter. The properties of the boost converter allow to evaluate the performances of the model-free strategy in the case of switching nonlinear transfer functions, regarding load variations. Our approach, which utilizes "intelligent" PI controllers, does not require any converter model identification while ensuring the stabili...

This paper explains Design, simulation and implementation of Perturb and Observe (P&O) Fuzzy Based control of DC-DC Converter in Photo-Voltaic (PV) System. A standalone PV system connected to a Boost converter with a resistive load and Maximum Power Point Tracking (MPPT) is modeled and implemented. A battery is used for storage purpose. The simulations were done in MATLAB/SIMULINK Environment. ...

In this paper, sliding mode control (SMC) for a bidirectional buck/boost DC-DC converter (BDC) with constant frequency in continuous conduction mode (CCM) is discussed. Since the converter is a high-order converter, the reduced-order sliding manifold is exploited. Because of right-half-plan zero (RHPZ) in the converter’s duty ratio to output voltage transfer function, sliding mode current...