Single And Three Phase Inverter Articles & Analysis
10 articles found
Some inverters offer configurable output: single-phase (one 120 V leg), split-phase (two legs for 120/240 V), or even three-phase in other markets. ...
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This paper is aimed at improving the output voltage waveform of a single phase PWM inverter. Two approaches is proposed, the first approach is based on selected harmonic elimination (SHE) of order up to 7th harmonic, for minimising harmonic distortion and modulating amplitude of the fundamental component of the output voltage waveform. For the first time, the Levenberg– Marquardt algorithm (LMA) ...
In many applications, single–phase sine–wave inverters are operated with low–pass filters at the output to deliver a low–distortion sinusoidal voltage to the load. In such cases, it is essential that the output be as close to a sinusoid as possible. However, conventional bridge–type inverters, which must be operated with some dead time, suffer from dead–time distortion problems. This effect ...
The PV arrays of both systems are interfaced with the grid via single phase grid-tied inverters. The inverters are installed in three separate groups that each injects 50 Hz electricity into one phase of the utility grid at the 0.4 kV level. The main objective of this work is to develop a ...
This paper presents accurate particle swarm optimisation (PSO) based-solutions for nonlinear equations of selective harmonic elimination technique to be used in single-phase stand-alone photovoltaic inverters. The proposed PSO-based method computes efficiently the required switching angles of inverter control signals to eliminate low order harmonics up to the 15th from the inverter voltage ...
This paper presents accurate particle swarm optimisation based-solutions for non-linear transcendental equations of selective harmonic elimination technique used in single-phase PWM inverters. The proposed method computes efficiently the required switching angles to eliminate low order harmonics up to the 15th from the inverter ...
This paper brings out an improved control strategy for an inverter employed to integrate a 3-kW wind-driven permanent-magnet synchronous generator (PMSG) to the utility network. The proposed controller features a feed-back control for enhanced current tracking performance and a feed-forward control for power tracking with varying wind-speeds. The harmonic content of the current fed to the grid is ...
A single phase cascaded inverter consisting of two full bridges creates a five-level AC output voltage. Due to switch combination redundancies, there are certain degrees of freedom to generate the five-level AC output voltage. This paper presents the different types of unipolar pulse width modulation (PWM) strategies for the chosen inverter. The effectiveness of the developed strategies are ...
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 ...