Adaptive space vector modulation for three-phase two-level PWM rectifiers/inverters

• Autorzy: Malinowski M.

Warianty tytułu

PL

Adaptacyjny modulator wektorowy do 3-fazowego dwupoziomowego prostownika/falownika PWM

• Języki publikacji: EN

Abstrakty

EN

The paper presents a new concept of Adaptive Space Vector Modulation (ASVM) for three-phase Pulse Width Modulated (PWM) converters. The new solution provides full range of operation and guarantees reduction of switching losses. This is achieved by using three modes of PWM: conventional SVM with two symmetrical zero states per sampling (SVPWM), two-phase SVM with one zero state per sampling also called discontinuous PWM (DPWM) and overmodulation including six-step operation (OVPWM). The clamped region of DPWM follows the current, so that the switching process at the peak current is avoided and it results further reduction of switching losses. An implementation of ASVM in both polar and cartesian coordinates is presented and novel algorithm for overmodulation in cartesian coordinates is developed. The DSP based experimental results confirm that ASVM offers several advantages and high performances for PWM converters.

PL

W artykule przedstawiono koncepcję nowej metody adaptacyjnej modulacji wektorowej (ASVM) we współrzędnych biegunowych i kartezjańskich dla trójfazowych przekształtników PWM. Rozwiązanie to pozwala na pracę w pełnym zakresie zmian współczynnika modulacji i redukcję strat łączeniowych w elementach mocy. Uzyskano to poprzez zastosowanie trzech rodzajów modulacji: konwencjonalnej z symetrycznym rozłożeniem wektorów zerowych w okresie próbkowania (SVPWM), modulacji z jednym wektorem zerowym w okresie próbkowania (DPWM) oraz nadmodulacji (OVPWM). Badania eksperymentalne wykonano przy użyciu procesora DSP potwierdzając wiele zalet ASVM w zastosowaniach trójfazowych przekształtników PWM.

Słowa kluczowe

EN

three-phase PWM; space vector modulation; PWM converter; switching losses

PL

przekształtnik PWM; przekształtnik trójfazowy; modulacja wektorowa; straty łączeniowe

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2002
• Tom: Vol. 51, nr 3
• Strony: 281--295
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Malinowski M.

• Warsaw University of Technology, Institute of Control and Industrial Electronics

Bibliografia

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• 21. Malinowski M., Sobczuk D., Bronowicz P., Kaźmierkowski M.P.: DSP implementation of adaptive modulator for three-phase PWM inverter with simplified switching time calculation. 3 th Conference on Control in Power Electronics & Electrical Drives – SENE’01, Łódź-Arturówek 2001, pp. 319-326.