Parallelogram Based Method for Space Vector Pulse Width Modulation
Keywords:Index Terms, PWM, inverters, DC-AC power conversion, space vector, space vector modulation, parallelogram
This paper presents a parallelogram based duty cycle computation method for space vector modulation control using standard pulse width modulation circuitry. This technique maps the voltage source inverter's solution space into only three parallelogram shaped zones and reduces the computational load. The proposed modulation methods are especially suited for a description of the voltage space vector in its α, β components and for modern and high dynamic applications, where demand changes may happen at a frequency comparable with the modulator carrier frequency. Several modulation methods used in scalar applications and extensively studied in the literature are easily obtained by combining the use of the modulation methods proposed in this work. The proposed methods have been validated by simulations and experimental test.
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