ABSTRACT
Recently, three-level inverter in the large capacity and high pressure situation got more
and more applications fields. Among many of modulation strategies, SVPWM has been one
of the most popular research points. The main advantages of the strategy are the following: it
provides larger under modulation range and offers significant flexibility to optimize switching
waveforms, it is well suited for implementation on a digital computer, it has higher DC
voltage utilization ratio. Initially, summing up the development condition of three-level
inverter technology, analyzed the structure of three-level inverter topological, the control
strategy and their respective advantages and disadvantages.
Secondly, the paper based on the ground-clam -p diode type three-level inverter,
expounds the work principle of three-level inverter, and analyzes the principle of the SVPWM.
By improving the three-level inverter SVPWM control algorithm, this paper introduces the
estimation method of the big sectors and the small triangles, and proposes the judgment rules
for large sector and triangle region and puts forward the corresponding output sequence of the
synthesis reference voltage vector and optimizes the function sequence of switch vector.
Finally ,using MATLAB/SIMULINK to carry on the simulation analysis. Building the
simulation system model to realized to three-level inverter SVPWM control algorithm, and to
confirmed the algorithm feasibility.
Keywords: Three-level inverter; space voltage vector control (SVPWM); MATLAB
simulation
VIP享7折，此内容立减4.47元 
