6. Selection & Maintenance
Selection Guide
Voltage matching: 6kV/10kV options
Load type: Choose vector control for heavy loads
English
High voltage electronic control
- Core Performance : 10kV high voltage input, fast response
- Applicable scenarios : High power motor drive system
- Safety Redundancy : Shunt trip, dual brake circuit
-
Environmental adaptability :
Vibration resistance 9.8m/s²
- INTRODUCTION
- SPECIFICATION
- RELATED
- INQUIRY
INTRODUCTION
High Voltage Variable Frequency Drive System
1. System Overview
High Voltage Variable Frequency Drive (HVVFD) systems are power electronic devices designed for precise control of high-voltage motor speed and power output. By adjusting power frequency and voltage, these systems find extensive applications in mining, metallurgy, power generation, and chemical industries. Key advantages include energy efficiency (20-40% energy savings), precise speed regulation, and harmonic suppression, aligning with modern industrial demands for green manufacturing and intelligent operations.
2. Core Components
Power Circuit Module
Rectifier: Converts AC to DC using multi-pulse technology (12/24-pulse), achieving THD ≤5%
Filter Circuit: Smoothens DC voltage with capacitors/inductors
Inverter: IGBT-based conversion to variable-frequency AC with multi-level output
Control System
Main Controller: DSP/FPGA processors running vector control and DTC algorithms
HMI: Touchscreen interface with remote communication (Modbus/Profibus)
4. Key Features
Energy Efficiency
System efficiency ≥97% at full load
20-40% energy savings vs fixed-speed drives
Smart Protection
Multi-level protection: Overcurrent/voltage, thermal shutdown
Fault bypass with neutral-point shift technology
5. Typical Applications
| Industry | Application | Benefit |
|---|---|---|
| Mining | Hoist systems | Soft-start, reduced mechanical stress |
| Power Plants | Boiler feed pumps | 30% energy saving |
SPECIFICATION
| Model | Power Range (MW) | Input Voltage (kV) | Output Frequency (Hz) | Efficiency (%) | THDi |
|---|---|---|---|---|---|
| HVFD-3.3/1.5 | 1.5-3 | 3.3±10% | 0-120 | ≥98 | ≤3% |
| HVFD-6.6/5 | 3-6 | 6.6±10% | 0-150 | ≥97.5 | ≤4% |
| HVFD-11/10 | 8-12 | 11±10% | 0-200 | ≥96.8 | ≤5% |
Technical Specifications:
Topology: Modular multilevel converter (MMC)
Cooling: Water-air hybrid cooling (IP54)
Control Accuracy: ±0.5% of set speed
Response Time: ≤10ms for 90% torque change
Standards: IEEE 519-2014, IEC 61800-4
Communication: IEC 61850, DNP3.0
Key Features:
Active front-end technology
100% torque at zero speed
Built-in harmonic filter
Cycloconverter bypass capability
Typical Applications:
Mine hoisting systems
High-power centrifugal compressors
Main ventilation fans
High-voltage pump drives
* THDi = Total Harmonic Distortion at input
** Ambient temperature: -10℃ to +45℃
† Optional features: Remote monitoring, Black start capability
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The Hebi starlight Mining Machinery Manufacturing Co., Ltd. was registered as a limited liability company on March 23, 1997, is a professional company that produces and sells mining hoisting winch, mine hoist and accessories.
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