High frequency welding machine

①Designed parameters

l   Nominal power: 600kW

l   Rated DC power: Pd=720kW

l   Rated DC voltage: UdN=450V

l   Rated DC current: IdN=1600A

l   The whole efficiency: η≥85%

l   Output power: Pout＞600kW

l   Designed frequency: f=200~300kHz

l   MOSFET inverter: 120kW×6

l   Tank circuit output mode: no welding transformer output, secondary resonance

②Power distribution requirements

l   Nominal power: 600kW

l   Rated DC power: Pd=720kW

l   Line-in power factor: COSφ≥0.85

l   Power distribution capacity: S≤850kVA

l   Power supply voltage: 3-phase 380V/50Hz

l   Line-in current: I=1300A

l   Line-in cable: each phase adopts three pieces of185mm² copper cable connected in parallel, 3-phase 4-line