| 摘要 |
PURPOSE:To realize the operation of an impartial regenerative inverter by detecting both direct and alternating currents of each regenerative inverter at respective substations, controlling them in a direction where each output of respective regenerative inverters becomes equalized, and balancing these output values of the regenerative inverters set up at each substation. CONSTITUTION:In a system where two substations A and B with a inverter 25 feeding DC power and an regenerative inverter 2 regenerating regenerative energy to be produced by a regeneratively controllable vehicle to the alternating current side on an aerial conductor of a DC feeding system electric railroad, are set up, a DC or AC current signal at these substations A and B is inputted into a control circuit 8. Then a difference between two current signals of the regenerative inverter 2 at the own substation A (B) and the regenerative inverter 2 at the other substation (A) is found out by an adder circuit 28, and such operation as multiplying this value as far as constant times over and the like is carried out by an arithmetic circuit 29. Next, reference voltage secured by an arithmetic circuit 26 is added by an adder circuit 30, thereby compensating the reference voltage, and thus output of each inverter 2 is uniformized. |
