| 摘要 |
PURPOSE: To improve a gain of a control system without deteriorating stability by converting a feedback signal of secondary delay into the feedback signal of primary delay. CONSTITUTION: A current transformer 21 is inserted between a current controlled type inverter 6 and an LC filter 8 connected to the AC output side and a secondary coil of the current transformer 21 is terminated with a resistor 22. A current flowing through the current transformer 21 is a primary delay current. The resistor 22 generates a voltage drop due to this primary delay current. Since a control circuit 11 inputs this voltage drop as a feedback signal, a large gain of the control system can be attained. |
