Both the switching states P and N, generated by modifying the SVPWM
algorithm, are employed to control the additional leg.
The components such as Z-source inverter, SVPWM
, IGBT switches, and filter are used in the circuit design.
Due to the symmetry of the six small hexagons, the algorithm of SVPWM
is analyzed based on reference voltage vector through the small hexagon marked with S = 1.
The space vector modulation (SVPWM
) can be easily implemented to all types of multilevel inverters.
Also the same information is used to look up the control mode (SVPWM
vs six-step) and the modulation index reference MI* from the table.
The new SVPWM
scheme using medium space vectors developed for six-phase VSI connected to a symmetrical load with a one neutral point (Fig.
The closed-loop control algorithm for three-phase CHB converter is always designed at high switching frequency (>5 k) with PSPWM or SVPWM
The overall system consists of a PMSM with load, space vector pulse width modulation (SVPWM
), field-orientation mechanism, voltage-source inverter (VSI), and three controllers.
This paper establishes the model of the three-phase grid-connected inverter discrete mathematical with deadbeat control based on the SVPWM
current and proposes the deadbeat control strategy in the fundamental frequency power synchronous rotating coordinate.
The overall configuration consists of the PMSM with load, the space vector pulse width modulation (SVPWM
), the voltage-source inverter, the power source rectifier, the automatic current regulator of the motor, the encoder used to detect speed and position, q-axis and d-axis controllers.
According to SVPWM
algorithm desired voltage vector in a given sector can be synthesized with the two active vectors framing the sector plus a zero vector (or vectors).