Power supply for induction heating or melting

H - Electricity – 02 – M

Patent

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Details

H02M 5/458 (2006.01) H05B 6/04 (2006.01) H05B 6/06 (2006.01)

Patent

CA 2456473

A rectifier/inverter power supply (10) for use with induction heating or melting apparatus includes a tuning capacitor (C1) connected across the output of the rectifier (14) and input of the inverter (20). The tuning capacitor(C1) forms a resonant circuit with an inductive load coil (L9) at the operating frequency of the inverter (20). Additionally, the load coil (L9) may comprise an active load coil connected to the output of the inverter (20) and a passive load coil, in parallel with a resonant tuning capacitor, for an improved efficiency circuit.

Une alimentation à redresseur / inverseur (10) destinée à être utilisée avec un appareil de chauffage ou de fusion par induction comprend un condensateur de réglage (C1) connecté à travers la sortie du redresseur (14) et l'entrée de l'inverseur (20). Le condensateur de réglage (C1) forme un circuit résonant avec une bobine de charge à induction (L9) à la fréquence de fonctionnement de l'inverseur (20). De plus, la bobine de charge (L9) peut comprendre une bobine de charge active connectée à la sortie de l'inverseur (20) et une bobine de charge passive, parallèlement à une capacité de réglage par résonance, et ce pour atteindre une plus grande efficacité du circuit.

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