A new multiple-input hybrid energy conversion topology is presented. The proposed topology is capable of combining different energy sources with different voltagecurrent characteristics, while achieving low part number and bi-directional operational. The Multiple-input converters have many applications such as grid connected integrated hybrid generation systems, fuel cells, micro grid-based tel...

The paper describes the design, simulation and practical implementation of a PV system specifically designed for battery charging applications. A DC-DC synchronous Buck converter is digitally controlled by a dsPIC33F to extract the maximum power from the PV panel and feed it to the battery, according to the data received through the sensors. The system proves to be stable to rapid weather chang...

In digital current mode controlled DC-DC converters, conventional current sensors might not provide isolation at a minimized price, power loss and size. Therefore, a current observer which can be realized based on the digital circuit itself, is a possible substitute. However, the observed current may diverge due to the parasitic resistors and the forward conduction voltage of the diode. Moreove...

This paper describes a simple model estimator for a new control method based upon algorithms commutation between two linear control laws. The multiple model control (MMC) defined is based upon the fusion of only two traditional IP controllers outputs. The influence of the digital integration methods and of the noise are pointed out. This new strategy improves the performances of the step input ...

For mobile back-lighting applications, a dual-input white LED (WLED) driver using a bi-direction buck-boost converter is proposed in this paper. The proposed driver has two input terminals: battery input Vin1 and solar-cell input Vin2. Unlike conventional drivers using boost converters, step-up SC DC-DC converters, and so on, the proposed converter drives the anode and the cathode of LEDs by us...

A novel modified bridge-type dual input DC-DC converter, which is proficient for integrating distinct V-I characteristic sources such as solar-PV, wind, etc., and storages including battery, ultracapacitor, fuel cell, etc., is proposed in this paper. Three modes of operations such as boost, buck, and buck-boost are possible using the same structure of the converter, and the converter can operat...

Dynamic voltage scaling (DVS) can effectively reduce energy consumption by dynamically varying the supply voltage of the system accordingly to the clock frequency. A new DVS-enabled DC–DC converter is presented in this paper. State trajectory is employed to analyze the transient features of PWM and PFM Buck converters. A novel transient enhancement circuit is designed to improve the transient r...

Received Sep 25, 2016 Revised Dec 01, 2016 Accepted Dec 11, 2016 Power electronic interface has reached a new level in the area of hybrid energy integration nowadays. The existence for the concept of hybrid energy integration is truly questionable without a proper power electronic interface. In this paper, a modified dual input DC-DC converter which is capable of incorporating two distinct V-I ...

Abstract: The line-to-output (LTO) frequency response of switched DC-DC converter describes how the smallsignal harmonic perturbation of the converted input DC voltage penetrates into the converter output, depending on the frequency of this perturbation. In the paper, the LTO frequency response conceived in this sense is faced with the LTO response, obtained by applying the well-known State-Spa...

An isolated small wind turbine emulator based on a separately excited DC motor is developed to evaluate the performance of small wind turbine control strategies. The test rig consists of a 3HP separately excited DC motor coupled to a synchronous generator. A dump load is connected to the generator through a buck-boost converter controlled by a microcontroller. Wind turbine rotor and furling dyn...