Introduction to Hybrid Active Power Filters Electronics Project:
This system uses low power harmonic and easy control and computation methods and the harmonic with high are filtered by the high pass filters this utilizes the APF and performance of the filtering is improves with HPF. We use small passive components.
Prototype: when we talk about the control system, the time taken by the interrupts is based on the timer unit. Modulation is set at the 10 KHz and during that time interrupts are generated twice. The software that is used can be used in the three levels of priorities. The highest level is used for the security and time control process or you can set current, provide delay to the current and update the modulators. When the second level was on go then DC link is performed after the 75th interrupt that takes place. Then at the last level synchronization of the system takes place and interface is also updated.
Efficiency: power measurement is done to check the power losses of the system. Our main purpose of this is to compare the efficiency of hybrid filter systems and APF systems. We need to control the both the system so that their power efficiency remains the same. When we use the compensated harmonic bridges this in turn increases loss of power in both the filters. To avoid this we can use active filter of dc voltage of 750 V. this maintain the same efficiency that of the active filters.
These whole systems shows the passive components are small but are not degraded like active components. This also shows the efficiency of the harmonic filters. And there is small difference between the RL type and RC type load. Control delay can be used with low order harmonic to improve the system.
Download Hybrid Active Power Filters Electronics Project Report.