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This paper presents the simulation of a novel dynamic phase controller for flicker mitigation by compensating the rms voltage every half-cycle of line voltage. It is based on a light dimmer using a TRIAC or a pair of SCRs (Sillcon Controlled Rectifiers) which regulate the voltage by phase control. Power quality issues and lamp characteristics affected by this phase-controlled voltage are investigated. A UIE/IEC flickermeter is introduced and simulated to verify the proposed method of flicker mitigation. The flickermeter response demonstrates the performance and limitations of this dynamic phase controller.