Method for space vector pulse width modulation of two-level converter

The invention relates to a method for space vector pulse width modulation of a two-level converter and belongs to the technical field of power electronics and conversion. The method includes the steps that according to sampling values of a three-phase reference voltage, the maximum value and the minimum value of the three-phase reference voltage are calculated, connection time of a three-phase switching device in a sampling period is obtained through direct calculation, and therefore a control signal of each switching device is obtained. According to the method, coordinate transformation and sector judgment are not needed, operations of irrational numbers and trigonometric functions are avoided, the switching control signals of the devices can be obtained only by a small number of comparison operations and simple four arithmetic operations, an algorithm flow is simple and easy to achieve, the calculated amount is small, optimal control over midpoint electric potential low-frequency components on the direct current side can be achieved, cost of a processor in the space vector pulse width modulation technology is reduced, and generality of the space vector pulse width modulation technology is improved.