Control of a dynamic voltage restorer (DVR) based on Space Vector PWM is described. The control algorithm is able to compensate for any type of voltage sag and uses a software phase-locked loop to track phase jumps during a fault. The control algorithm restores the depressed voltages to the same phase and magnitude as the nominal pre-sag voltages and then gradually tracks to the phase of the depressed voltages. Experimental results are shown to validate the control algorithm using a three-phase prototype with a power rating of 10 kVA.
Inspec keywords: power system transients; power system faults; power system control; control system synthesis; secondary cells; voltage control; PWM power convertors
Other keywords:
Subjects: Power convertors and power supplies to apparatus; Voltage control; Power system control; Control system analysis and synthesis methods; Control of electric power systems; Secondary cells
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