| 摘要 |
PURPOSE:To sufficiently compensate a conventional reactive power as a whole by allotting respective objects of compensation to higher harmonic compensation and reactive power compensation with giving limitation and compensating respective objects of compensation. CONSTITUTION:A higher harmonic current detection part 11 and a reactive current detection part 14 are provided in a control circuit 7, and a high harmonic current ilh is inputted to a first inverter generation voltage operation part 12, whereby an inverter 5 is operated by the output voltage signal V1* and the action of PWM13. On the other hand, a reactive compensation current iq and a system voltage Va corresponding to a reactive compensation current are inputted to a second inverter generation voltage operation part 15 and an inverter 6 is operated by the output voltage signal V2* and the action of PWM16. Thus the control signals of respective inverters can independently be controlled without being reciprocally interfered, and efficient control is attained in accordance with inverter functions. |
