AC Power Tool > 1kW

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Auswahl von KomponentenDesign-Tipps

Merkmale

Der schematisch dargestellte Schaltungsteil zeigt den Grundaufbau für ein AC Power Tool mit einer Leistung > 1kW, bestehend aus einem AC-Filter zur Einhaltung der Grenzwerte.

Hauptbestandteil ist ein Gleichrichter, sowie einer PFC-Stufe (Aufwärtswandler), einem Zwischenkreis, bestehend aus einem oder mehrerer parallel geschalteten Kondensatoren und einer Vollbrücke zur Ansteuerung des DC-Motors. Die PFC-Stufe dient dabei zur Regelung der Zwischenkreisspannung und zur Regelung des Eingangsstromes, damit dieser in Phase mit der Netzspannung am Eingang ist. Weitere enthaltene Funktionen sind u.a. eine interne Spannungsversorgung für das Human Interface, Peripherals, Sensor etc.

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