High Voltage VFD 6kV/10kV | Medium Voltage Drive for Industrial Motors
AnyHz high voltage VFD is a medium voltage drive designed for 6kV/10kV industrial motors, with power range from 400kW to 25000kW. Using advanced cell series multilevel (CSM) topology with low-voltage IGBT power cells, this high voltage frequency converter delivers perfect sinusoidal output without harmonic filters. Featuring vector control technology and >96% efficiency, it is ideal for power generation, petrochemical, mining, and metallurgy applications.
Power range
400~25000kVA
Input voltage
6kV 3 phase to 3 phase
10kV 3 phase to 3 phase
High Voltage VFD Medium Voltage Drive Applications
Power Generation: Boiler feed pump control, induced draft fan speed regulation, achieving 20-40% energy savings. Our medium voltage drive ensures stable operation in critical power plant applications.
Petrochemical: Compressor and pump control in refineries, with explosion-proof designs available. This high voltage VFD meets strict safety standards for hazardous environments.
Mining: Conveyor belt soft start, crusher speed control, with high-altitude derating solutions. The MV drive handles harsh mining conditions reliably.
Metallurgy: Blast furnace blower, rolling mill drive, with high overload capacity design. Our high voltage frequency converter delivers precise torque control for metal processing.
Cement: Kiln drive, cooler fan control, dust collector optimization. This medium voltage drive improves process efficiency and reduces energy consumption.
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Automation production equipment such as textiles
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Paper Making
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Sand Making
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Machine Tools
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Packaging
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Food
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Fans
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Pumps
Key Features of High Voltage VFD Medium Voltage Drive:
- Cell Series Multilevel (CSM) Topology: Low-voltage IGBT power cells in series, delivering perfect sinusoidal output without harmonic filters
- Advanced Vector Control: Magnetic flux closed-loop vector control for asynchronous and synchronous motors
- High Efficiency: >96% overall efficiency, >0.96 input power factor, saving 20-40% energy
- Wide Voltage Range: 6kV/10kV input, 2.3kV-11kV customizable (-20%~+5%)
- Unit Bypass Technology: Mechanical and electronic bypass options for continuous operation
- Neutral Drift Technology: Automatic voltage neutral point adjustment when unit fails
- Torque Enhancement: Increased load capacity during startup and low-frequency operation
- Speed Start Function: Smooth start when motor is rotating, reducing grid impact
- Instantaneous Power Outage Function: Continuous operation during grid fluctuations
- Synchronous Switching: Undisturbed switching between power frequency and variable frequency
- Master-Slave Control: Dual or multi-drive linkage operation
- Built-in PID: Process control for pressure, temperature, flow rate
- Communication Interface: RS485/ModBus, optional Profibus, DP, industrial Ethernet
High Voltage VFD Medium Voltage Drive Technical Specifications
| project | parameter |
| Rated capacity of frequency converter | 400-25000kVA |
| Rated voltage | 2.3kV~11kV (-20%~+5%) (out of range, special instructions required) |
| Rated frequency | 50Hz/60Hz (-10%~+10%) |
| Control power supply | 380VAC, 30kVA |
| Rated input power factor | ≥ 0.96 |
| Overall efficiency | >96% |
| Output frequency range | 0~80Hz |
| Speed accuracy | ± 0.5% (open loop vector) ± 0.1% (closed loop vector) |
| Instantaneous overcurrent protection | 150% (customizable according to user requirements) |
| Overload capacity | 120% load, 120s |
| Torque limit | 10%~150% |
| Analog input | 3-way 4-20mA/excitation feedback 4-20mA (customizable) |
| Analog output | 4-way 4-20mA |
| Upper communication | Isolated RS485 interface, ModBus, RTU (optional: Profibus, DP, industrial Ethernet protocol) |
| Acceleration and deceleration time | 5 seconds to 6000 seconds (load dependent) |
| Switching input and output | 14 inputs and 22 outputs (8 outputs can be defined) |
| Operating ambient temperature | -5~+45 ℃ |
| Storage/transportation temperature | -25~+55 ℃ |
| Cooling method | Forced Air Cooling (AF)/Water Cooling (WF)/Air Water Cooling (AFWF) |
| Environmental humidity | ＜ 95%, no condensation ※ |
| Installation altitude | ≤ 1000 meters, above 1000 meters above sea level, derate by 1% for every 100 meters increase in operation |
| dust | Non conductive and non corrosive,<6.5mg/dm3 |
| Protection level | IP30 |
| Cabinet color | RAL 7035 (or customized according to the color code provided by the user) |
High Voltage VFD Model Selection Guide - 6kV/10kV Medium Voltage Drive
| Voltage Class | Power Range | Application | Cooling |
| 6kV | 400kW-25000kW | Power generation | Air/Water cooling |
| 10kV | 400kW-25000kW | Petrochemical | Air/Water cooling |
| Custom | 2.3kV-11kV | Special requirements | Custom design |
Key Applications by Industry:
Power Generation: Boiler feed pumps, ID/FD fans (20-40% energy savings)
Petrochemical: Compressors, pumps (explosion-proof options available)
Mining: Conveyor soft start, crusher control (high-altitude derating)
Metallurgy: Blast furnace blowers, rolling mills (150% overload capacity)
Cement: Kiln drives, cooler fans, dust collector optimization
Frequently Asked Questions About High Voltage VFD Medium Voltage Drive
Q: What is the difference between high voltage VFD and low voltage inverter?
A: High voltage VFD operates at 6kV/10kV for motors above 400kW, using CSM topology with low-voltage IGBT cells. Low voltage inverters (220V/380V) are for smaller motors. Our medium voltage drive handles higher power with better efficiency and reliability.
Q: What is CSM topology in high voltage frequency converter?
A: Cell Series Multilevel (CSM) topology uses multiple low-voltage IGBT power cells in series to achieve high voltage output. This design delivers perfect sinusoidal waveform without harmonic filters, making our medium voltage drive ideal for sensitive industrial applications.
Q: Can high voltage VFD achieve energy savings in power plants?
A: Yes, our high voltage frequency converter achieves 20-40% energy savings in power generation applications by optimizing boiler feed pumps and fan speed control. The MV drive pays for itself through reduced electricity costs.
Q: Is explosion-proof design available for petrochemical applications?
A: Absolutely. Our high voltage VFD can be customized with explosion-proof enclosures and safety features for petrochemical refineries. The medium voltage drive meets all industry safety standards.
Q: What is the maximum power of your high voltage frequency converter?
A: Our standard high voltage VFD range is 400kW to 25000kW (400-25000kVA). Custom medium voltage drive solutions can be engineered for specific project requirements beyond this range.
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