Newly Released - VEICHI Sinusoidal Filter Vector Control Technology

Sinusoidal filters are introduced currently between the AC drive output and the motor terminals for better harmonics and interference reduction and efficiency and safety improvement when applied to long cables and high-speed motors. However, its existence leads to changes in the mathematical model of the motor control system, and further leads to poorer errors, performance, algorithm convergence so that the previous vector control techniques can’t promise the required control performance. Technological innovation here is seriously critical to address these problems.

Break through from technological innovation
Progress ahead towards R & D acceleration

Aimed at safer and more stable AC drive output with sinusoidal filters, Veichi now, based on independent research and development of core technological reserves, has launched its vector control technology sinusoidal filters featuring safer filtering, energy efficiency, stability, and reliability that is qualified for control performance in various application scenarios.

Vector Control Technology Sinusoidal Filters

Veichi's vector control technology with sinusoidal filters is upgraded with an innovative filter observer technique to obtain the voltage and current states on the motor side and effectively addresses the resonance from sinusoidal filters by damping control. So, it can significantly enhance motor control stability and simultaneously maintain the high dynamic performance of vector control compared to the previous scalar or vector control technology without the sinusoidal filters. Meanwhile, it means lower motor current harmonic and steadier motor temperature rise against motor demagnetization at elevated temperatures and overvoltage. Finally, safer operation of both the power grid and users’ equipment can be ensured at even lower power consumption.

Ineffective Resonance Suppression

Effective Resonance Suppression

This technology is compatible with various types of motors such as asynchronous motors and permanent magnet synchronous motors and combinative with sensor-less current vector control, filter resonance suppression control, sinusoidal filter with transformer boosting control, and self-learning of impedance parameters on the primary and secondary sides of transformers so as to improve the overall performance exceptionally well. This innovative breakthrough on this technology also offers crucial support for motor energy consumption reduction in the context of sustainable manufacturing.

Drive for various industrial applications

Release off full equipment characteristics

Among the numerous applications of sinusoidal filters, those involving long cables and high-speed motors like oilfield drilling, marine exploration, papermaking, mining are more longer for vector control with sinusoidal filters since the addition of sinusoidal filters can better reduce harmonic content and prevent overvoltage. In scenarios with high-speed motors like aviation, marine navigation, high-speed CNC machinery, micro gas turbines, and flywheel energy storage of the intelligent grid systems, sinusoidal filters can better reduce motor losses, suppress current harmonics, and lower motor temperature.

Applications of Sinusoidal Filters

Perfectly aligned with the demands of these scenarios, Veichi's vector control technology with sinusoidal filters can effectively prevent the failures of initial position identification, sensorless control, fault diagnosis, and fault-tolerant control that used to be common under previous control methods with sinusoidal filters. Now reduced output waveform harmonics, lowered motor temperature rise, smoother motor control and improved overall stability are actually seen successfully in high-speed magnetic levitation, air-floating systems, high-pressure submersible oil pumps, centrifugal pumps, and have been receiving widespread market acclamation for its excellence.