VDN800 Series | High-Voltage MV VFD | 6kV & 10kV | 250kW – 10000kW | Medium Voltage AC Drive
The VDN800 Series is a sophisticated high-voltage frequency converter designed for reliable and efficient control of large motors in medium voltage applications. Featuring a robust multi-processor control architecture with DSP + FPGA combination and fiber optic isolation, it ensures high-speed data processing, real-time performance, and complete electrical isolation for maximum safety. With ultra-low harmonic distortion (<2%), high input power factor (>0.96), and a compact, modular structure, the VDN800 delivers clean, efficient, and dependable power for critical high-power processes.
Technical Parameter
10kV Class: 315kW – 10000kW
Key technical advantage
- Advanced Multi-Processor Control: Utilizes a high-speed DSP (100MHz) for data processing and an FPGA (150MHz logic clock) for near-zero-delay inter-module communication. This parallel processing architecture ensures exceptional real-time control and system protection.
- Complete Electrical Isolation: Fiber optic communication between control and power components guarantees total electrical isolation, making the system extremely secure, reliable, and immune to electromagnetic interference.
- Grid-Friendly Operation: The integrated phase-shifting rectifier transformer ensures the drive system itself does not generate significant harmonic distortion, maintaining high power quality at the point of common coupling.
- Superior Output Quality: Delivers a near-sine wave output current with less than 2% harmonic distortion and a high system efficiency of over 97%, reducing motor stress and energy losses.
- High Input Power Factor: Achieves an input power factor greater than 0.96 without the need for external power factor correction equipment, reducing reactive power costs.
- Robust & Reliable Design: Features a compact overall structure with a unique, safe filter design. The control system has a dual power supply to prevent unexpected shutdowns. Comprehensive fault self-diagnosis ensures long-term, stable operation.
- User-Friendly Operation: Equipped with a touchscreen and PLC, providing a full Chinese language interface for easy parameter setting and fault query.
Avaliable Product List
FAQ
What makes the VDN800 different from low-voltage VFDs?
The VDN800 is a medium-voltage (MV) drive designed to directly control motors rated for 6kV or 10kV power supplies. Unlike low-voltage drives that require a step-up transformer, the VDN800 connects directly to MV power, offering a more efficient, compact, and cost-effective solution for large high-power applications (250kW to 10MW).
How does the fiber optic communication benefit my operation?
The use of fiber optics for communication between the control system and the high-power switching components provides complete electrical isolation. This eliminates the risk of high-voltage interference damaging the sensitive control electronics, enhances safety for operators, and significantly improves the drive’s immunity to electrical noise, ensuring stable operation in harsh industrial environments.
Will the VDN800 cause harmonic problems in my factory's power grid?
No. The VDN800 is designed to be grid-friendly. It utilizes an integral phase-shifting rectifier transformer. This technology cancels out harmonics at the input stage, ensuring that the drive system itself does not inject significant harmonic distortion back into your power grid, thus complying with strict power quality standards and avoiding the need for external filters.
What is the output power quality of the VDN800?
The VDN800 produces a high-quality output. It generates a near-sine wave current with total harmonic distortion (THD) of less than 2%. This clean waveform reduces stress on the motor insulation, minimizes torque pulsations, and allows for longer motor cable runs, all while maintaining a high system efficiency of over 97%.