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A voltage source converter (VSC) is a power-electronic converter that uses a DC voltage source as its energy-storage element and synthesizes an AC voltage waveform by switching the DC voltage onto the AC terminals through controlled semiconductor devices ^[1]. The DC side is characterized by a relatively stiff voltage, typically maintained by a capacitor, while the AC-side current is controlled by modulating the magnitude and phase of the synthesized AC voltage relative to the AC system voltage ^[2]. VSCs are implemented using self-commutated devices such as insulated-gate bipolar transistors, gate-turn-off thyristors, or integrated gate-commutated transistors, which permit independent control of active and reactive power exchange with the AC system ^[3]. The AC output is generally pulse-width-modulated, with passive filters used to attenuate switching harmonics ^[2]. A VSC is distinguished from a current source converter (CSC), which uses a stiff DC current source and a series inductor on the DC side, by the nature of its DC-side energy storage and by the quantity that is held constant on the DC side ^[1].