How to solve the harmonic problem of energy storage air conditioner

What causes harmonics in HVAC applications?

Harmonics are caused by non-linear loads in HVAC applications. These loads, such as variable frequency drives (VFDs), EC motors, LED lighting, and others, do not draw current sinusoidally from the utility.

What causes harmonics in a power supply?

Harmonics in a power supply are primarily caused by non-linear loads and three-phase power. The more power there is, the larger the harmonic currents in the network will be.

What problems does harmonic distortion cause within a building?

Harmonic distortion creates a variety of problems within a building, such as increased energy consumption, equipment damage, and reduced lifespan of components. The current harmonics (THD I) are responsible for creating the voltage harmonics (THD V), and thus it is acceptable that in this document, we only compared different mitigation technologies based on current harmonics (THD I).

What causes harmonics in a building?

The most significant causes of harmonics in a building are typically non-linear, three-phase power. Other contributors include variable frequency drives (VFDs), electronic commutator (EC) motors, LED lighting, computers, uninterruptible power supplies, televisions, and most electronics with a power supply. The more power there is, the bigger the impact.

Are there different harmonic mitigation solutions based on current harmonics?

Yes, there are different harmonic mitigation solutions based on current harmonics (THD I). These solutions are responsible for creating the voltage harmonics (THD V) and thus, it is acceptable to compare different mitigation technologies based on current harmonics in this document.

How can you deal with harmonics?

One way to deal with harmonics is to simply oversize portions of the electrical infrastructure within a building. This includes upsizing transformers and wire size to handle the added harmonic content and heat. Backup generators also need to be oversized in systems with significant harmonic loading.