Active harmonic filters (AHFs) provided by Sinotech Group operate on sophisticated principles to mitigate harmonic distortions in power systems. AHFs utilize advanced power electronics and control algorithms to detect, analyze, and counteract harmonic currents dynamically. The process begins with voltage and current sensors that monitor the electrical signals in the system, capturing real-time data on harmonic components. This information is transmitted to a digital signal processor (DSP) that calculates the amplitude, frequency, and phase of each harmonic. The DSP then generates a control signal for the power electronic converter, typically an insulated-gate bipolar transistor (IGBT) based inverter. The inverter produces a compensating current that is equal in magnitude but opposite in phase to the detected harmonic currents, effectively canceling them out before they enter the power system. Sinotech’s AHFs feature adaptive control systems that continuously adjust to changing load conditions, ensuring optimal performance even in dynamic environments. The filters can handle multiple harmonic orders simultaneously, making them suitable for complex industrial setups with nonlinear loads like variable frequency drives and rectifiers. The company’s AHFs also incorporate feedback mechanisms that monitor the effectiveness of harmonic cancellation and fine-tune the compensation strategy in real-time. This closed-loop control system ensures high precision and rapid response to harmonic variations. Sinotech’s active harmonic filters are designed to integrate seamlessly with existing power distribution systems, including those in high-voltage transmission, medium and low voltage distribution, and renewable energy applications like wind power and photovoltaic systems. The group’s technical expertise in secondary protection and communication systems enables it to implement AHFs with comprehensive monitoring and diagnostic capabilities, allowing clients to track filter performance and detect potential issues proactively. By leveraging advanced technology and engineering excellence, Sinotech’s active harmonic filters deliver reliable solutions for improving power quality and ensuring the efficient operation of electrical systems.