Active Harmonic Filter (AHF) is one product combining 3 functions: harmonic mitigation, power factor correction and three-phase unbalance compensation. It has the capability to filter 2nd to 50th order harmonics and single order compensation ratio can be adjustable. Sinexcel AHF module comes with a full range capacity from 15A to 300A. And for cabinet system, AHF can be infinite paralleled. When operating, AHF will output compensation current according to the harmonic current content in the system, no extra unwanted current injected to the syste
Active Harmonic Filter
THDI < 5%
Ideal solution for managing harmonic and reactive power
Ensuring the meet of IEEE 519 standard
Guaranteeing safe operation and improving production capacity.
Working Principle
External CT detects the load current, DSP tracksinstruction current and calculates the reactive power change rate through the Instantaneous Reactive Power Algorithm. Then DSP sends PWM signal to IGBT driving board which can control IGBT on and off to generate the same amplitude reverse compensation current. At the same time CT detects the output current and compensation result is fed back to DSP, then the next round of logic control is carried out to realize stable power grid.
Compensation effect
Unique intelligent FFT algorithm prevents system from resonance to assure stable. 3-Level structure and DSP/IGBT control get the 35kHz switching frequency and 5ms response time, less switching loss and faster response rate.
Product Paramenters
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Company Introduction
Sinexcel Electric devoted to Power Quality business since year 2007, went public in August 2017(Stock code 300693), headquartered in Shenzhen. Designing and Manufacturing products including Active Harmonic Filter, Static Var Generator, Active Voltage Conditioner and EV Charger, Energy Storage /Micro-grid Solution. With 200+ R&D members among 700+ employees and based on the modular power electronics technology, Sinexcel Electric has supported the installation of more than 1.5 million Ampere AHF and 1 million kVAr of SVG globally.
