Simulation study of error-free trading grid-side-phase method for matrix converter

The two-stage matrix (TSMC) converter becomes the research hotspot because it is relatively simple and easy to control. In rectifier control of the matrix converter, how to obtain the phase of grid is very important. Traditional MC is based on zero crossing detection (ZCD) for obtaining the phase when the power network is balance. But there are disturbances such as fluctuations, harmonics, unbalanced voltage in input voltage. Thus, how to achieve the error-free trading of grid has become a critical problem under such non-ideal conditions. Using the enhanced phase-locked loop technology in phase trading of the input three phase voltage, this is a software PLL technology, using PLL technology combined with the symmetry components methods, and these are applied to the three phase synchronous rotating referenced system, which can eliminate the interrupts of input voltage, and realize error-free trading. Finally, the models in MATLAB are built. The simulation results show that it could be good solution to this problem.