Power Quality Issues and Solutions

• Rapidly growing power electronics technology is providing different Power Quality solutions.
• All custom power devices are capable of providing a number of power quality functions which can be employed selectively or simultaneously.
• Two of the devices DSTATCOM and the DVR share a similar architecture which are based on the voltage source converter.
• DVR is connected in series with the line where as DSTATCOM is in shunt with the line across the load.
• DVR injects a dynamically controlled voltage produced by PWM voltage source inverter in series to bus voltage by means of Transformer.
• The DVR designed for series connection into a power supply line. It controls voltage applied to load by injecting a voltage.

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