Title :
Representation of the voltage space vector of the multilevel inverter in oblique-angled coordinate systems of two delta voltages
Author_Institution :
Shukshin Altai State Acad. of Educ., Biysk, Russia
Abstract :
The paper deals with two key oblique-angled coordinate systems for the space vector representation of the multilevel voltage source inverter which are considered as the coordinate systems of two delta voltages. Simplicity of the algorithm of the choice of the three nearest vectors to the reference and the determining of their actions durations under space vector PWM (SVPWM) realization in oblique-angled coordinates system is shown. The roles of the integer values and the fractional values of the relative delta voltages are revealed. The conclusion is drawn that the oblique-angled 60- and 120-degree coordinates are equivalent and similar from the point of view of steps, operations and results of the SVPWM algorithm application. The insertion of calculations in oblique-angled coordinates operations (with use of the presented formulas of corresponding transformations) as the subblock into the basic algorithm of calculations on orthogonal components has been proposed.
Keywords :
PWM invertors; SVPWM algorithm; delta voltage oblique-angled coordinate system; multilevel inverter voltage space vector representation; pulse width modulation; space vector PWM realization; Inverters; Phase modulation; Space vector pulse width modulation; Switches; Vectors; Voltage space vector; delta voltages; multilevel inverter; oblique-angled coordinates; space vector PWM (SVPWM);
Conference_Titel :
Actual Problems of Electronics Instrument Engineering (APEIE), 2014 12th International Conference on
Conference_Location :
Novosibirsk
Print_ISBN :
978-1-4799-6019-4
DOI :
10.1109/APEIE.2014.7040803