DVR Projects

DVR Projects IEEE using Matlab/Simulink

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AT-DVR-1Dynamic voltage restorer employing multilevelcascaded H-bridge inverter
AT-DVR-2Control of Reduced-Rating Dynamic VoltageRestorer With a Battery Energy Storage System
AT-DVR-3Compensation Of Sags And Swells Voltage Using Dynamic Voltage Restorer (DVR) During Single Line To Ground And Three-Phase Faults
AT-DVR-4A Versatile Control Scheme for a Dynamic Voltage Restorer for Power-Quality Improvement
AT-DVR-5Modeling And Simulation For Voltage Sags/Swells Mitigation Using Dynamic Voltage Restorer (DVR)

Dynamic voltage restoration (DVR) is a method of overcoming voltage sags that occur in electrical power distribution.

DVR projects IEEE

dvr projects ieee

The basic principle of dynamic voltage restoration is to inject a voltage of the magnitude and frequency necessary to restore the load side voltage to the desired amplitude and waveform, even when the source voltage is unbalanced or distorted. Generally, devices for dynamic voltage restoration employ gate turn off thyristors, (GTO) solid state power electronic switches in a pulse-width modulated (PWM) inverter structure. The DVR can generate or absorb independently controllable real and reactive power at the load side. In other words, the DVR is a solid state DC to AC switching power converter that injects a set of three phase AC output voltages in series and synchronicity with the distribution and transmission line voltages.

The source of the injected voltage is the commutation process for reactive power demand and an energy source for the real power demand. The energy source may vary according to the design and manufacturer of the DVR, but DC capacitors and batteries drawn from the line through a rectifier are frequently used. The energy source is typically connected to the DVR through its DC input terminal.

The amplitude and phase angle of the injected voltages are variable, thereby allowing control of the real and reactive power exchange between the dynamic voltage restorer and the distribution system. As mentioned, the reactive power exchange between the DVR and the distribution system is internally generated by the DVR without AC passive reactive components.