| 摘要 |
PURPOSE:To obtain the constant voltage and constant current characteristics and provide a capacity for absorbing an instantaneous shortcircuit by inserting a lattice type filter uinto a DC link. CONSTITUTION:Reactors L1, L2 are respectively connected between terminals (a) and (b), (c) and (d) of the secondary side terminal (a) of a diode D sequentially connected to the positive terminal a' of a diode bridge and both terminals (b), (d) of a transistor inverter bridge, and capacitors C1, D2 are diagonally connected between the terminals (a) and (d), (b) and (c). A lattice type filter is formed of the reactors L1, L2 and the capacitors C1, C2, and the diode bridge and the transistor inverter bridge are connected in parallel with the DC power source. The neutral point of three arms of the diode bridges and the transistor bridges is connected to the primary side of a 3-phase induction motor IM. |
