| 摘要 |
Provided are an apparatus and a method for reducing a common mode voltage of a three-phase voltage source inverter. An apparatus for reducing a common mode voltage when a three-phase voltage source inverter (VSI) is switched according to an embodiment of the present invention includes a future reference current calculation unit for calculating future reference currents at start and end points in a sampling section, respectively, a future load current calculation unit for calculating future load currents at the start and end points in the sampling section, respectively, a non-zero vector selecting unit for simultaneously selecting first and second voltage vectors, which minimize current error values at the starting points in the sampling section, from six non-zero vectors based on current values calculated by the future reference current calculation unit and the future load current calculation unit, and a switching section setting unit for setting switching times corresponding to the first and second voltage vectors in the sampling section, respectively. |
