Power Quality & Management

Harmonic Correction units are designed to electronically inject harmonic current to cancel load produced harmonic current such that the upstream power harmonic current and voltage are reduced.

Clean Control Center - MCC
The Clean Control Center utilizes a harmonic correction unit to provide harmonic cancellation directly on the Motor Control Center Horizontal Bus. The harmonic correction unit senses the load current and injects into the AC lines a synthesized waveform that is inverted compared to the remaining signal. The result is a clean waveform as seen by the upstream electrical system. Single or multiple harmonic correction units may be applied within a Clean Control Center providing an economical solution to excessive harmonics due to AC drives or other non-linear loads. Use of the Clean Control Center will provide compliance to the most stringent 5% Total Demand Distortion (TDD) requirements of IEEE 519.

Harmonic Correction Unit - Open/Enclosed
The Harmonic Correction unit is an integrated power electronics product which senses and injects current to cancel harmonics and provide reactive power. Harmonic cancellation is installed directly on the AC line in parallel to harmonic producing loads such as AC drives.