A Brief Look At Constituent Components Of Active Harmonic Filters

Power quality is a critical part of any industrial setup. The adverse effects of harmonic distortion on any equipment and system are well-documented. To protect such equipment and to improve the overall power factor of a system, harmonic filters, specifically, active harmonic filters, are used in cases where there is a dynamic load. But what are the constituent components of an active harmonic filter that make it so effective? This blog explores these components in detail.

Exploring The Different Aspects Of An Active Harmonic Filter

Current Transformers: 

This is equipment used in active harmonic filters that measures the flow of current in a power line. Their main purpose is to identify any harmonic signature here.

Digital Signal Processor: 

This serves as the main brain or controller of the active harmonic filter. It processes the incoming signal with the harmonic signature and calculates the harmonic signature required to offset it.

Power Electronics: 

This constitutes an IGBT inverter bridge that converts the compensating DC power into an effective AC current. This countercurrent is made with the aid of advanced Pulse Width Modulation techniques.

DC Bus: 

This part of the harmonic filters the reserve energy required for a quick current compensation when required.

Injection Transformers: 

Also known as a Coupling Circuit, it is responsible for supplying the compensating current in the power line at just the right point and voltage.

Control Interface: 

Lastly, the control interface allows the users to remotely monitor the active harmonic filter for its performance, diagnostics, and more in real-time through an easy-to-use dashboard.

These components, in conjunction, eliminate or reduce harmonic distortion in a circuit and increase its overall power factor. This leads to better energy efficiency and a reduction in downtime for sensitive equipment.

ADM Engineering Inc. is a proud distributor of harmonic filters. We offer active harmonic filters for dynamic applications, passive harmonic filters for more static tasks, and hybrid harmonic filters that can tackle both ends of the spectrum. To learn more about specifications and other technical details, contact us at 877-236-8337 today.