Proceedings ArticleDOI
Novel estimator of distorted and unbalanced electromotive force of the grid for control system of PWM rectifier with active filtering
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TLDR
The simulations and experimental results are presented which show the performance of proposed estimator and predictor of grid emf and its influence on operation of the control system of PWM rectifier with active filtering.Abstract:
Control of PWM rectifier with active filtering is realized by fast and precise shaping of its AC currents. In the paper the control system with predictive algorithms of both set currents calculation and currents control is proposed. These algorithms provide very high accuracy and dynamics of AC currents shaping which is limited only by parameters of the power circuits. In both algorithms calculations are based on precise information about present and future samples of in general distorted and unbalanced equivalent electromotive force (emf) of the grid. For this purpose the novel, grid voltages sensorless, precise estimator and predictor of grid emf is proposed. This robust algorithm is based on digital signal processing techniques and requires relatively low computational effort. In this paper the simulations and experimental results are presented which show the performance of proposed estimator and predictor of grid emf and its influence on operation of the control system of PWM rectifier with active filteringread more
Citations
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Journal ArticleDOI
Virtual Flux Sensorless Control for Shunt Active Power Filters With Quasi-Resonant Compensators
TL;DR: In this article, a sensorless control strategy for pulsewidth modulated active filters is presented, which uses only two current sensors, which are located in the grid interface, and does not require algorithms for disturbance estimation.
Proceedings ArticleDOI
Nonlinear virtual flux oriented control for sensorless active filters
TL;DR: In this article, the authors present a control strategy for active filters, without measuring of grid voltages and load currents, which uses the virtual flux to obtain the grid synchronization angle.
Proceedings ArticleDOI
Sensorless PWM rectifiers with active filter action
TL;DR: Experimental results of a sensorless control strategy for PWM rectifiers with active filtering function, which has the capability to reject harmonic components from the grid, and can be employed for harmonic mitigation of shunt connected load.
Proceedings ArticleDOI
A Special Multi-Pulse Converter with Small Active Power Filter
TL;DR: In this paper, the principle of operation and results of laboratory and simulation tests of a multi-pulse power network converter system with direct-current voltage output, mating with shunt active power filter (APF), were presented.
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The twelfth-pulse rectifier for traction substations of electric transport
TL;DR: The article describes the influence of the voltages non-sinusoidal form of the supplying three-phase network to the rectified voltage's quality of the multipulse rectifier with a ring connection of the valve arm.
References
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Proceedings ArticleDOI
Virtual flux based direct power control of three-phase PWM rectifiers
TL;DR: In this article, the authors proposed a direct power control (DPC) of three-phase pulsewidth-modulated rectifiers without line voltage sensors, which is based on virtual flux (VF) estimation.
Journal ArticleDOI
Predictive current control of voltage-source inverters
TL;DR: An improved algorithm with one-period prediction of current for a voltage-source inverter controller that was realized in an experimental system with DSP and field-programmable gate array circuits.
Journal ArticleDOI
Digital repetitive controlled three-phase PWM rectifier
Keliang Zhou,Danwei Wang +1 more
TL;DR: In this article, a plug-in digital repetitive control (RC) strategy is proposed to achieve zero tracking error for constant-voltage constant-frequency (CVCF) pulse width modulation (PWM) converters.
Journal ArticleDOI
AC voltage and current sensorless control of three-phase PWM rectifiers
Dong-Choon Lee,Dae-Sik Lim +1 more
TL;DR: In this article, a control scheme of three-phase PWM rectifiers eliminating both the AC input voltage and current sensors is proposed, where the phase angle and magnitude of the source voltage are estimated by controlling the deviation between the rectifier current and its model current to be zero.
Proceedings ArticleDOI
Active power line conditioners based on symmetrical topologies
TL;DR: In this article, the basic one-phase symmetrical active power line conditioner (APLC) was proposed and power flow between add-on sources of the two basic APLC and their energetic properties were compared to indicate that the new proposed solution allow to minimize losses and are superior to the base APLC.