A harmonic filter is a device used to moderate and decrease harmonics in a power system to reasonable levels.
This harmonic filter is intended to reduce or eliminate harmonic resonance and distortion at key working circuit locations.
Harmonic distortion is typically brought on by excessive currents flowing into and out of appliances.
Harmonic filters minimize operation and operating expenses while preventing extremely high harmonics from causing equipment damage.
To prevent component damage or utility provider fines, they are employed in various sectors, including HVAC, oil, gas, mining, and wastewater.
The harmonic filter may be built using various electrical parts, including resistors, capacitors, and inductors, to stop extra harmonic currents from being sent to the ground.
These filters are primarily intended to stop particular frequency harmonics.
Harmonic filter types
Very good harmonic filters can shield expensive electrical equipment from distorted power outputs caused by harmonics.
According to the rated power, applied voltage, single phase or three phases, and other load-dependent factors, there are several types of harmonics filters on the electrical and electronic market.
Passive harmonic filters and Active harmonic filters are the two most common forms of harmonic filters, nevertheless.
The components employed in the filter design are the fundamental distinction between these two kinds of harmonic filters.
Simple passive components, namely resistors, inductors, and capacitors, are used in passive harmonic filters.
In contrast, active harmonic filters make use of active elements like various BJTs, IGBTs, MOSFETs, and integrated circuits.
The harmonics filters must meet international safety standards like IEEE, EN, AS, BS, and the underwriter’s laboratories UL label since they are electrical line safety equipment.
The harmonics filters can also be created in various configurations. The frequency that is the third multiple of the fundamental frequency can be filtered away using a third order harmonic filter, for example.
Benefits of harmonic filters
- Avoid equipment malfunctions and failure.
Filtering the main power supply is beneficial when many minor harmonic-producing devices contribute to harmonic pollution.
Since they assist in resolving non-linear loads, active harmonic filters efficiently reduce device failures and breakdowns.
- Boost energy effectiveness.
Active harmonic filters are adaptable and scaled to the harmonic current for various loads, which is one of their finest features.
You can install more units if the overall harmonic current exceeds the single harmonic filter’s rating. They also reduce carbon dioxide emissions.
- Dependable and consistent.
As they lessen production disturbances, active harmonic filters are helpful in locations with substantial non-linear loads and plenty of DC drives.
As a result, these filters help increase the device’s lifespan and enable reliable performance.
- Reduce the cost of maintenance and servicing.
Any electrical appliance that runs as efficiently as possible will undoubtedly function flawlessly.
Devices with active harmonic filters can use this theory; the active harmonic filter does not require bespoke manufacture because it is mostly impedance independent unless the capacitors and resistors are needed.
- Stop and lessen energy loss.
All harmonic currents can be blocked before they reach the transformer with an active harmonic filter installed on the main power supply.
Additionally, they lessen wear and tear and reactive power absorption, which prevents energy waste.
Why Power House?
We will help you understand the harmonic filter working principle and offer you the best.
Our more than three decades of expertise in the Egyptian and Middle East African markets help set us apart from the other companies in our industry.
In addition to our primary concentration on providing our clients with the most significant cost reductions, the shortest possible lead times, and the best quality integrated solutions.
We offer you the best harmonic filters along with its different types, as well as, having a team of professionals that will help you with it.