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The grid connectivity requirements imposed today, ask for an accurate controller design able to deal with system constraints and nonlinearities. In order to fulfill grid international standards, this paper details a Finite control set model predictive controller called FCS-MPC as part of controlling an energy conversion system. It uses a discrete time 3L-NPC inverter model (in the α-β frame) to predict...
This work presents the implementation of an 11 Bit pipelined successive approximation register ADC (PSAR) in a 65 nm technology. The proposed ADC utilizes comparator-based switch-capacitor circuits and zero-detection in order to enable fast and high linear residue amplification with at reasonable area costs. Simulation results indicate conversion rates of 4.4 MSPS and energy consumption of 48.8 fJ...
Three phase converters are favorable for high power grid connected systems. In photovoltaic (PV) application, it is possible to remove the transformer from the PV system in order to reduce size, losses, and cost; and improve the efficiency. In other hand, presence of the parasitic capacitor between the panel's metal frame and cells causes the leakage current issue. The leakage current increases current...
Noise is an important factor in the analog and digital circuits which determine the characteristics of the system. The work aims at developing a noise robust circuit with high frequency response and the same can be implemented in a dynamic logic system with reduced number of transistor and also the dynamic logic will have the probability of signal switching activity to be low which will subsequently...
Mostly, the conventional neutral point clamped (NPC)multilevel inverters are implemented for odd number of levels in the output. In this paper, four level NPC inverter is implemented and compared with the nested neutral point clamped (NNPC) inverter. The NNPC inverter is a four level inverter for high power applications. This inverter is a combination of diode clamped and flying capacitor multilevel...
Z-Source inverters can overcome some of the limitations, inherent in traditional Voltage Source and Current Source Inverters and can provide boosted outputs. Most of the literature on Z-source inverters deals with 3-phase or 1-phase bridge inverters. This paper proposes a Single-Phase Z-Source Push-Pull Inverter topology. This scheme has several advantages compared to basic Z-source full-bridge inverter...
The Brushless Doubly Fed Reluctance Machine (BDFRM) is a type variable speed machine with two sets of windings. One set is fed from a variable frequency inverter while the second set is fed at constant frequency. Comparing with the traditional induction machine, BDFRM has simple structure and higher efficiency, higher power density, smaller size and lower maintenance cost. So, it is important to build...
Multilevel inverters are of special importance in high power and medium power applications. Reduced distortion, better output power quality, minimum switching losses, reduced switching stress make multilevel architecture preferred. This paper demonstrates a new topology of a 9-level and 15-level inverters which requires less number of power switches and as well as DC voltage sources than that of existing...
There are many topologies of solar charging station for electric vehicles, using DC or AC current to charge, which increases the uses of DC-DC and DC-AC converters. The main idea of this article is to reduce the number of DC-DC converters in an AC charging station. In the light of this vision, this work proposes a topology with their managing unit. To this end, the operating characteristics and performance...
In the present circumstances in order to gratify the supply demand equation of electrical power the renewable energy source is the only alternative. However it is very difficult to comprehend and exploit renewable energy due to its stochastic character. That's why it is often cited as an obstacle for the grid integration. In most of the cases current controlled pulse width modulated voltage source...
This research is a concept study for a photovoltaic power plant on an Algerian site, this plant is connected to the electrical distribution network of low or medium voltage. it follows that the study of system simulation in its entirety, would be used for this purpose the computer software PVSYST. our work involves the design of 1 MWc photovoltaic plant in Aïn-melh M'sila where there favorable weather...
This paper presents a comparative analysis of maximum torque per ampere control (MTPA) and zero d-axis current control (ZDAC) in Interior permanent magnet synchronous motor drive. Interior PMSM is preferred due its extra reluctance torque production. Zero d axis current control is used in most of the industrial application due its control simplicity. Due to thermal or reliability constraints the maximum...
This paper presents the modeling and simulation of a 100 kWp Photovoltaic Power System installed and operating at G. Narayanamma Institute of Technology & Science since March 2014. The utility grid-connected 100 kWp PV system comprises of PV arrays installed on the rooftop terraces of two buildings in the college connected through five 20 kW inverters to the LT distribution panels in the two buildings...
Simulation and experimental studies of two output series resonant inverter with Asymmetrical Duty Cycle (ADC) control are presented in this work. The prototype has been implemented using 06 MOSFET transistors with 06 antiparallel diodes as switches. The inverter is designed to supply two resonant loads. Simulation and experimental results of the output waveforms of the proposed inverter for RLC load...
During recent years, most of the attention to multilevel inverters has been focused on control algorithm. While, the defects of SVPWM algorithm is caused by classic space vector theory based on traditional coordinate system such as mass of computation and low efficient of controller. In this framework, this paper presents a new simplified space vector modulation scheme, which is based on G-H coordinate...
In this paper a grid connected photovoltaic (PV) flyback inverter operating in discontinuous conduction mode (DCM) is used to test a hybrid maximum power point tracking (MPPT) method. Moreover, the design procedure of a flyback inverter is also presented as part of this paper. The proposed hybrid MPPT method is a combination of fractional short circuit current(FSCC) and hill climbing (Perturb and...
In this paper, an improved Cascaded Multi-Level Inverter (CMLI) topology which can be "symmetric" or "asymmetric" is proposed. The improved topology can produce higher number of levels using lower number of components. Higher number of levels leads to generation of a high quality with low Total Harmonic Distortion (THD) output voltage waveform. To increase number of voltage levels,...
Solar energy continues to play vital role in the delivery of clean and affordable source of generating electricity. Photovoltaic is the most promising technology amongst the types/methods of producing electricity from solar energy. The aim of this research is to evaluate the performance of Serhatkoy PV power plant (1.2 MW). Being the first grid-connected PV plant in north Cyprus, the results of this...
Fault tolerant ability is one of the most important tasks in high power converters. In this paper, a comparison between conventional fault tolerant methods is done for four applicable methods. For this purpose, their performance is investigated in specific case study and simulation results are used to illustrate their advantages and disadvantages. The most important features taken into account are...
This paper presents a design methodology for a first order L filter inductance used to connect a three-phase power converter to the grid. This method uses the desired THDi to calculate the L filter inductance to ensure the grid-connection standards are met. This methodology was designed for converters operating with Space Vector PWM modulation.
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