ATA QBMV medium-voltage VFDs are IGBT-based drives designed for precise speed control of medium-voltage motors. Built on proven power electronics technology and utilizing SPWM control, they enable smooth variable-frequency operation to optimize motor performance across variable-speed conditions. The drives improve equipment control accuracy, power factor, and operating efficiency, meeting demanding process requirements while reducing energy consumption and supporting energy-efficient operation.
ATA QBMV medium-voltage VFDs support multi-mode motor control:
*V/f control for stable, cost-effective open-loop operation in standard applications
*Sensorless vector control for enhanced low-speed torque and accuracy without an encoder
*Closed-loop vector control for high-precision, dynamic performance in demanding processes
ATA QBMV Medium Voltage VFD adopts a multi-core control platform,significantly boosting overall system performance.
*DSP+FPGA+ARM microcontroller architecture separates logic control and algorithm control
*BGA-packaged core CPU reduces size & power consumption, enhances stability
*150MHz DSP (150MIPS) enables high-precision, high-speed operation &powerful data processing
ATA QBMV Medium Voltage VFD uses SPWM control + phase-shifting transformer multi-winding secondary design to suppress harmonics,delivering near-perfect sine wave output.
• No additional harmonic filters or power compensation devices required
• Eliminates harmonic-induced pulsating torque, prevents load resonance,extends service life
• Protects main motor & cable insulation from dv/dt stress damage
• Motors are immune to common-mode voltage interference
• Unlimited motor cable length within allowable voltage drop range
• Zero pollution to the power grid
105% continuous operation, 130% overload for 60 seconds, and 150% overload for 3 seconds (at 40°C, altitude ≤1000 m), enabling reliable handling of momentary load spikes without tripping.
Maintains full-load output with grid voltage fluctuations within ±10% of rated value, and supports derated operation without tripping even when the grid voltage momentarily drops to 65% of rated.
ATA QBMV Medium Voltage VFD inherits the proven reliability of the ATAQB series, featuring a dedicated high-performance bypass protection system for medium voltage applications.
• Redundant design for ultra-high reliability
• Integrated dr y-type isolation transformer input for easy installation & enhanced stability
• Dual redundant power supply for main control system ensures
system safety
• Optional bypass function improves system availability
• Fiber-optic control signal transmission for strong anti-interference capability
• Multi-level protection & graded fault pre-alarm mechanisms guarantee safe, stable operation
ATA QBMV Medium Voltage VFD features a user-centric design for intuitive operation and seamless connectivity.
• Supports multiple mainstream communication protocols (Modbus,Profibus, DeviceNet, InterBus, etc.)
• Equipped with large color touchscreen (with keypad backup),optimized menu & built-in help files for easy operation
• Integrated fault diagnosis function enables real-time/historical fault & event viewing for quick troubleshooting
Equipped with 8-layer control PCBs and 4-layer power module PCBs for reliable operation in harsh environments; all boards receive 3-layer conformal coating for effective moisture and dust protection.
| Voltage range | 3kV - 11kV |
|---|---|
| Current range | *6kV:280KVA-5900KVA, output current:26.4A-567A. *10KV:280-10500KVA, output current:15.9A-610A |
| Typical power range | 6kV:220kW-5000kW / 10kV:220kW-9000kW |
| Control mode | V/f control / Sensorless vector / Closed-loop vector |
| Speed regulation accuracy | ±0.5% (Sensorless Vector Control & Closed-loop Vector Control) |
| Speed regulation range | 1:10 (V/F) 1:50(SVC) 1:100(FVC) |
| Overload capacity | 105%continuous,130%for 1 min,150%for 3s (at 40°C, altitude ≤1000 m) |
| Input power factor | >0.95 under rated conditions |
| Efficiency | >97%Rated input/output, ambient temperature 25°C, after thermal stabilization |
| Braking method | Over-Excitation Braking / DC Injection Braking / External Dynamic Resistor Braking / Regenerative Braking |
| Communication interfaces | Supports multiple mainstream communication protocols (Modbus, Profibus, DeviceNet, InterBus, etc.) |
| Operating temperature | ‒20 ° C ‒ 65 ° C (for transport/temporary storage |
| Altitude | Up to 1000 m |
| Enclosure protection class | IP30 |
| Equipment types this model is suitable for | Centrifugal pumps / Fans / Compressors / Conveyors / Mills / Crushers / Mixers |
|---|---|
| Industries and specific use case for each | Metallurgy — drive control for rolling mill & smelting equipment Petroleum — pump/compressor startup at oil refinery sites Chemicals — process pump & agitator speed regulation Machinery — speed control for machine tools & processing equipment Shipbuilding — marine pump and fan drive adjustment Oil fields — downhole pump & surface compressor control Mining — underground conveyor and crusher startup Paper-making — pulp pump & paper machine speed regulation Cement — kiln fan and raw material conveyor control Fire protection — fire water pump automatic drive Power generation — auxiliary fan & circulating pump regulation Coal mining — underground belt conveyor & coal mill drive Wastewater treatment — dosing pump and aeration fan speed control |
No. Built-in over-excitation braking enables rapid braking without braking resistor, restrains bus voltage surge and avoids overvoltage trip during deceleration.
Yes, three control modes are optional via parameter setting. V/F for general pumps, sensorless vector for low-speed mixers/conveyors without encoder, closed-loop vector for high-precision heavy-duty processes.
Yes, standard Modbus protocol is equipped. Hot-swappable communication expansion cards support quick on-site upgrade without equipment power-off.
Need technical details or a specialized setup? Whether you require more technical documents or a direct consultation to ensure a perfect fit, our engineers are here to support you every step of the way.
Whether you are specifying a new project, requesting a technical proposal, or exploring distributor opportunities, our engineering team responds to all international enquiries within 24 hours.
