Comparison of 3D-SVPWM and Carrier-Based PWM of three-phase four-leg voltage source inverter

Finite‐time composite control scheme for three‐phase four‐leg inverter under variable operating conditions

“…For three‐phase four‐leg inverter, the additional leg increases the dimension of space vector pulse width modulation. In [6–8], the principle of three‐dimensional (3‐D) space vector pulse width modulation (3‐D SVPWM) is introduced based on the traditional vector control. The main idea of the 3‐D SVPWM is to approximate the given reference signal by regulating 16 switching vectors.…”

Predictive Current Control With Instantaneous Reactive Power Minimization for a Four-Leg Indirect Matrix Converter

“…The fourth leg would then provide the needed neutral connection for the load. There are several topologies that can handle the zero sequence voltage and the current caused by an unbalanced source or load in three-phase, four-wire systems [7], [8]. A direct power converter can also be used to supply energy to an unbalanced three-phase load using a 4Leg-IMC [9], [10].…”

Research on paralleled three-phase four-leg voltage source inverters based on dual-loop control in αβo coordinate

“…For three-phase three-leg VSI, the space vector modulation is an effective way to improving the utilization of the DC-bus voltage. For three-phase four-leg VSI, there exists several modulation methods in a-b-c coordinate and --o coordinate [6][7][8][9][10][11][12]. Modulation of the fourth leg has a direct impact on the effect of SVM method or carried-based PWM method.…”