JPS63191835U

JPS63191835U -

Info

Publication number: JPS63191835U
Application number: JP8187987U
Authority: JP
Priority date: 1987-05-28
Filing date: 1987-05-28
Publication date: 1988-12-09

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す回路図、第２図
は同実施例の調相可能な無効電力範囲を示す説明
図、第３図は調相装置の全体構成を示す回路図、
第４図は従来例の調相可能な無効電力範囲を示す
説明図である。１……負荷、２……インバータ、Ｆ……逆Ｌ字
形フイルタ、５_１……第１の演算部、５_２……第
２の演算部、６……電力増幅器、７……電力設定
部、８……コンデンサ無効電力設定部、９……比
較部、１０……自動電圧設定器。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the reactive power range in which phase adjustment is possible in the same embodiment, and FIG. 3 is a circuit diagram showing the overall configuration of the phase adjustment device.
FIG. 4 is an explanatory diagram showing a reactive power range in which phase adjustment is possible in a conventional example. DESCRIPTION OF SYMBOLS 1... Load, 2... Inverter, F... Inverted L-shaped filter, 5 ₁ ... First calculation section, 5 ₂ ... Second calculation section, 6... Power amplifier, 7... Power setting section , 8... Capacitor reactive power setting section, 9... Comparison section, 10... Automatic voltage setting device.

Claims

[Claims for Utility Model Registration] An inverter equipped with an inverted L-shaped filter consisting of a reactor and a capacitor on the output side is connected in parallel to a power system, and a reactive power detection value and a reactive power command value on the output side of the inverter are provided. In a phase adjusting device that compensates for the reactive power of a load using an inverter by generating a gate signal based on the power deviation value of the output voltage, the output voltage setting value, and the voltage deviation value of the output voltage detection value, a power setting unit that sets a compensation value corresponding to the reactive power; a first calculation unit that calculates a reactive power value based on the output current detection value of the filter and the output voltage detection value of the filter; , a second calculation unit that calculates a reactive power value based on the detected output current value of the inverter and the detected output voltage value of the inverter; and a set value of the power setting unit and a phase advance of the capacitor of the filter. a comparison section that extracts a deviation of reactive power; and a comparison section that extracts the deviation of the reactive power; A phase adjusting device comprising: a switching section for switching between the deviation of the output value of the arithmetic section;