In this paper an optimal damped input filter is designed based on a Genetic Algorithm (GA) for an electrolytic capacitor-less AC-AC converter. Sufficient passive damping and minimum losses in passive damping elements, minimization of the filter output impedance at the filter cut-off frequency, minimization of the DC-link voltage and input current fluctuations, and minimization of the filter cos...

A simple but accurate pseudo-passive mismatch-shaping D/A converter is described. A digital state machine is used to control the switching sequence of a symmetric two-capacitor network that performs the D/A conversion. The error caused by capacitor mismatch is uncorrelated with the input signal and has only little power in the signal band. The system has been simulated assuming a 0.1% capacitor...

Flying capacitor multi-level converters use charged capacitors as a critical element. For proper operation, the voltages must be known and regulated. Direct measurement is straightforward, but when number of required measurements high, this complicated approach. This paper introduces an estimation method for n voltages. The scheme based on system ( + 1 ) equations, which defined in way that it ...

This paper proposes a model based approach for prognosis of DC-DC power converters. We briefly review the prognosis process, and present an overview of different approaches that have been developed. We study the effects of capacitor degradation on DC-DC converter performance by developing a combination of a thermal model for ripple current effects and a physics of failure model of the thermal e...

A 10-bit 100-kS/s successive approximation register (SAR) analogto-digital converter (ADC) with rail-to-rail input range is proposed for a low power sensor interface. It consists of a time-domain comparator, a split capacitor-based digital-to-analog converter (SC-DAC) and a SAR logic. The time-domain comparator with an offset calibration technique is used to achieve a resolution of 10-bit. To r...

This paper proposes a high voltage gain dc/dc converter with coupled inductor cells and switched capacitor for renewable energy applications. It includes coupled inductor, switched capacitor and voltage multiplier cell. Switched capacitor charged during off period by using the energy stored in the coupled inductor. This will increase the performance of the converter. The voltage gain of traditi...

Based on the fact that the real inductor and the real capacitor are fractional order in nature and the fractional calculus, the transfer function modeling and analysis of the open-loop Buck converter in a continuous conduction mode (CCM) operation are carried out in this paper. The fractional order small signal model and the corresponding equivalent circuit of the open-loop Buck converter in a ...

The life of LED driver is mainly dependent on the component used in it. Elimination of electrolytic capacitor is done so that the life of LED driver will increase, if an ac-dc LED driver with power factor correction control is used than the output will be a pulsating current for driving the LED. Since the pulsating current will introduce light flicker that varies double the power line frequency...

In this paper, a statcom without any energy storage devices is proposed to compensate network voltage during disturbances. This statcom utilizes a matrix converter in its topology which eliminates the DC-link capacitor of conventional statcom. The modulation method for matrix converter which is used in this paper is space vector modulation. There are some methods to improve power quality for se...

This paper proposes a 1.5 V 12-b CMOS ratio-independent algorithmic analog-to-digital converter (ADC) based on a capacitor-mismatch insensitive technique. A novel switched-capacitor multiplying digital-to-analog converter (MDAC) with an accurate gain of two is proposed for an algorithmic ADC. The proposed MDAC architecture requires only one opamp in four phases to generate the next residue outp...