| 摘要 |
PURPOSE:To shorten a wasteful time at the restarting time by stopping a self- excited current type inverter in phase coincident to the starting phase predetermined by the inverter when the inverter is stopped. CONSTITUTION:A gate pulse from a pulse distributor 26 is amplified by a pulse amplifier 27, and applied to inverter thyristors 15U-15Z. When a start/stop instructing unit 40 generate and ON signals are generated from inverter thyristors 15U and 15Y of phases U and Y, a logic circuit output signal 50 from a logic circuit 30 becomes a logic ''0'' signal for instructing the stop at the moment, and a pulse distributor 26 stops immediately after generating ON signals at the thyristor 15U and 15Y. |
