Showing results for: three phase inverter Articles
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Hardware implementation of three–phase VSI using PIC16F877A microcontroller and optimisation using PSO
This paper reports hardware implementation of three–phase inverter using selective harmonic elimination technique by PIC16F877A microcontroller, whereas the notch angles are calculated through particle swarm optimisation (PSO) technique. This technique is proposed to minimise the overall total harmonic distortion (THD) of the output voltage of PWM inverter and corresponding switching angles are ...
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A new three-phase ZCS pulse width modulated inverter
A novel three-phase inverter is investigated in this paper. All inverters are, in a sense, a waveform synthesiser where the DC at the input is converted to a desired type of waveform at the output. This paper reports the performance of a tracking controller to synthesise the sinusoidal output. Capacitors are charged/discharged in a controlled manner to track any desired waveform with a finite ...
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Low distortion three–phase sine PWM using a general purpose micro–controller
Three–phase balanced sine–PWM pulses are required for the purpose of generation of sinusoidal output voltage and/or currents from inverters, used for UPS/motor–control applications. Such pulse–generation is possible using micro–controllers/DSPs with PWM output pins. This paper discusses a simple algorithm to generate low distortion balanced three–phase sine–PWM pulses from a general purpose ...
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Analysis and design of controlled capacitor charging type power frequency inverter
This paper presents the performance of the capacitor charging type inverters. The inverter uses the voltage and current feedback and produces a desired voltage at the output by suitably charging/discharging a capacitor. An inductor is connected in series to limit the charging/discharging current. Both single and three phase inverters are considered. A small signal analysis is presented to ...
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FPGA realisation of an area efficient SVPWM modulator for three phase induction motor drive
This paper presents an area efficient single chip field programmable gate array (FPGA) implementation for space vector pulse width modulator (SVPWM) using Q-format data representation. This new methodology in VLSI signal processing for SVPWM results in less chip resources utilisation and improved accuracy in all internal modules of the controller. The control algorithm has been developed using a ...
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Selective harmonic elimination in VSI–fed induction motor drives using swarm and genetic optimisation
The paper presents non–traditional solutions to the problem of selective harmonic elimination (SHE) in induction motor drives fed by three–phase voltage–source inverter (VSI). The problem is independently solved using genetic algorithms (GA) and particle swarm optimisation (PSO). The inverter switching angles are determined such that the low–order harmonics up to the 17th are eliminated, while ...
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Adaptive hysteresis-band current controller
One of the most complicated control problems in variable speed AC drives is the difficulty of processing feedback signal of the outer loop in the presence of harmonics. However, conventional fixed band hysteresis controller has a variable switching frequency throughout the fundamental period. A variable-hysteresis-band controller comes as a solution to reach an optimal ripple current. An ...
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Digital control of a three-phase grid connected inverter
This paper presents the design and practical implementation of a digital current controller for a three-phase PWM voltage source inverter connected to the grid via an LCL filter to produce a high quality current injected into the grid. A two-feedback loops control system is proposed, with an outer grid current loop and an inner filter capacitor current loop. The controller also incorporates a ...
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Design simulation and experimental evaluation of a three-phase controlled capacitor charging type inverter
This paper presents the design, simulation and experimental verification of a new three-phase pulse width modulated inverter. The inverter works on the principle of controlled capacitor charging, where a capacitor that is connected across the load is charged or discharged in a controlled manner to synthesise a desired waveform. The input to the inverter being a voltage source, an inductor is used ...
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Top Solis Inverter Price in Pakistan
Ginlong Technologies, the parent company of Solis solar inverters, is the world’s largest and most renowned inverter manufacturer. The company specializes in the production of single-phase and three-phase solar inverters. Since its inception in 2005, the company has remained committed to providing clean and affordable energy solutions, continually enhancing its dedication. Solis solar ...
By Alpha Solar
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MGM makes transformers for solar applications
Scientists have high confidence that global temperatures will continue to rise for decades to come, largely due to greenhouse gases produced by human activities. The Intergovernmental Panel on Climate Change (IPCC), which includes more than 1,300 scientists from the United States and other countries, forecasts a temperature rise of 2.5 to 10 degrees Fahrenheit over the next century. Increasing ...
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Modelling of three-phase grid-connected inverters
Grid-connected inverters are key elements that interface the distributed energy sources with the grid. In this paper, a graphic modelling method based on switching flow graph is presented for modelling inverters, with a one-cycle controlled inverter as an example. This method features great simplicity and accuracy, and is compatible with dynamic system-simulation software, such as MATLAB. PSPICE ...
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Are inverters PV’s Achilles Heel?
The organizers of the Utility Scale PV Yield Optimization Conference & Expo, gained exclusive access with Michael Levi, Senior Director Worldwide Marketing from Satcon to talk about the inverter market for utility solar projects, how they are positioning themselves in a competitive market and how reliable are these key components. Q1: What segment of the solar market are you targeting? ...
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H∞ controller for stability enhancement in VSC HVDC system with parallel AC lines
In this paper, a state-space model for a voltage source converter based high voltage direct current (VSC HVDC) transmission link in parallel with an AC transmission line is developed using dq-coordinate system. A robust H∞ control design for the converter and inverter of the VSC HVDC system is proposed to maintain the DC voltage and control the active and reactive power at the converter stations. ...
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