ABSTRACT
The form of voltage-source inverter (VSI) most commonly used consists of a three-phase, naturally commutated, controlled rectifier providing adjustable direct voltage Vdc as input to a three-phase, force-commutated inverter (Fig. 10.1). The rectifier output-inverter input section is known as the dc link. In addition to a shunt capacitor to aid direct voltage stiffness the link usually contains series inductance to limit any transient current that may arise.
