AI880-1 3BSE028587R1 | ABB | compensation capacitor Controller

Description

AI880-1 3BSE028587R1 | ABB | compensation capacitor Controller

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AI880-1 is generally used in DC circuits, and there is a noticeable flickering phenomenon when using lights in AC circuits. Although capacitive ballasts do not consume as much power and have low temperature rise as resistive ballasts, when charging capacitors at low power frequencies, they will generate pulse peak currents, causing great damage to the electrodes, flickering lights, and affecting the service life of light bulbs; Working in high-frequency circuits, voltage fluctuations can reach an ideal state and become an ideal ballast. Inductive ballasts have low loss, stable impedance, small deviation in impedance microbial properties, long service life, and better stability of light bulbs than resistive ballasts. Currently, the ballasts used in conjunction with high-pressure sodium lamps are all inductive ballasts. Its disadvantages are heavier than benzene and higher in price.

In addition, AI880-1  have begun to emerge, but currently they are expensive and their reliability cannot be matched with high-pressure sodium lamps. Except for special occasions, they are rarely used in general situations. Therefore, high-pressure sodium lamps must be connected in series with ballasts corresponding to the bulb specifications before they can be used. The lighting circuit of high-pressure sodium lamps is a nonlinear circuit with a low power factor. Therefore, compensation capacitors are considered in the network to improve the power factor of the network.
The output of the AI880-1  adopts a full bridge inverter. The inverter operates at a low frequency of 195Hz, and the average voltage of the lamp is zero. The drive of the bridge is output by foot QOUT and QOUT, both of which operate at a 50% duty cycle, with a difference of 180 °. Using IR2112 to drive high-end and low-end MOSFET transistors. This method is relatively expensive and can also be driven directly at the low end, while the high end uses a high-voltage transistor, a pull-up resistor, and the correct phase. The following is a detailed circuit diagram.

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