| 摘要 |
PURPOSE:To enable to control to approach a power source current to a sinusoidal wave with a simple circuit by a connecting switching means capable of chopping with the DC side of a thyristor bridge circuit. CONSTITUTION:The outputs GT1-GT7 of a pulse generator Palpha are respectively applied directly to the gates of thyristors U1-W2, the outputs Gp1, Gp2 of the generator Palpha are applied to GTO1, GTO2 to phase-control via the generator Palpha and to pulse-width control via the generator PP the outputs Valpha, Vp of function generators Falpha, Fp having the prescribed function characteristics in response to the output of a voltage command Sv. The GTO1, GTO2 respond the value of the command Sv, chop by the signal of the gate pulse, and vary the conduction rate to control the output voltage. |
