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10kV/2800kW Coal Mine Hoist Inverter

The module is a flexible, modular power quality product designed for harmonic suppression, power factor correction, and three-phase balance.

Rated capacity: 30A/50A/75A/100A/150A/200A
Rated input: 200/400/480/690/800V AC
Grid frequency: 50/60 Hz ± 10%
Filter range: 2 to 50 orders
Installation types: wall-mounted, rack-mounted, upright
Power grid configuration: 3P3W, 3P4W

Service Hotline: +86-10-81799630

Email: Liry_chinnovo@126.com

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Special frequency converter

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Product Description

Product Overview

Input 10 kV , output 6 kV Rated power 2800 kW Rated output current 320A Power units are connected in series, with vector control. Four-quadrant operation ， Zero-speed full torque Hover, Energy feedback 35%+ Save electricity ；

Principle Topology

Technical Specifications

Parameter
Product Model	CN710-281-10/6-413
Rated capacity	2800 kW
Rated input voltage	10 kV (±10%), 3-phase, 50 Hz (±5%)
Rated output voltage	0 ~ 6 kV (varies linearly with output frequency)
Rated output current	≈ 309 A
Topological structure	Power unit series multilevel technology
Work Quadrant	Four quadrants (Energy can flow in both directions and features full regenerative braking capability)
Cooling method	Forced air cooling (indoor air-cooling), standard equipped with a centrifugal fan.
Protection level	IP21 (Standard)
Performance metrics
Input power factor	≥ 0.96 (at rated load, the power factor is >0.95 across the 20% to 100% load range)
Overall machine efficiency	≥ 97% (rated load, excluding transformer)
Overload capacity	120% rated current – 1 minute; 150% rated current – 2 seconds
Speed control range	0 ~ 120% rated speed
Speed control accuracy	±0.1% (closed-loop encoder feedback)
Speed ratio	0.111111111
Total Harmonic Distortion (THD)	Input current THD: < 4% (at rated load)
Total Harmonic Distortion (THD)	Output Voltage THD: < 3% (no output filter required)
Braking performance	Built-in regenerative energy feedback unit, 100% of rated power energy is fed back to the grid.
System Composition
Phase-shifting transformer	Dry-type, Class H insulation, 10 kV primary side, multiple phase-shifting windings on the secondary side, designed to eliminate harmonics.
Power unit	Quantity: 5 units in series per phase, totaling 15 units.
	Rated power: Approximately 117 kW per unit
	Topology: H-bridge IGBT PWM inverter circuit
	Control: Fiber-optic driven, fully electrically isolated
Control system	Multi-stage DSP + FPGA all-digital control system, employing carrier phase-shifting technology. Control interface: Comes standard with an IO interface board, providing hardwired terminals (start/stop/speed setpoint/fault, etc.) and CAN/MODBUS TCP communication interfaces.
Human-Machine Interface HMI	Touchscreen with Chinese/English display, used for parameter setting, status monitoring, fault recording, and query.
Switchgear	Optional built-in or external high-voltage input circuit breakers and disconnect switches.
Protection function
System Protection	Input overvoltage/undervoltage, overcurrent, phase loss, phase imbalance, and transformer overheating.
Power unit protection	Overvoltage, undervoltage, overcurrent, IGBT overheating, and fiber-optic communication failure in the unit.
Motor protection	Overload, short circuit, locked rotor, overspeed
Other	Control system self-diagnosis, fast-blow fuse failure

External dimensions (optional): Approximately 3800 mm × 1500 mm × 2400 mm

Product Features

Power unit The rectifier side adopts AFE Active front-end technology, bidirectional power flow
Under downshift conditions, regenerated electrical energy is automatically fed back into the power grid, achieving an energy-saving rate exceeding... 35%
Zero Quick 150% Rated torque output, heavy-load hovering without jitter.
Torque response time <5ms， Prevent “ Slip hook ”
Low speed 0.1 Hz~ 18.6 Hertz Run
Intelligent Interlocked Control for Mechanical Brakes (Release Detection) → Torque establishment)
Real-time Fault Diagnosis: Overvoltage / Undervoltage, overspeed, and encoder failure redundancy

Application scenarios

Current Pain Points and Solutions in the Industry Related to This Product
Traditional lift system issues	Qi'an Four-Quadrant Inverter Solution
⚠️ Insufficient starting torque under heavy load, risk of vehicle rollback.	✅ 200% starting torque Zero-speed hover anti-slip hook
⚠️ Brake pads wear out quickly, resulting in high maintenance costs.	✅ Energy feedback to the power grid Reduce mechanical braking
⚠️ Energy waste and low energy efficiency during distribution.	✅ Efficiency of feedback > 97% , 30%+ energy savings
⚠️ Speed regulation is not smooth, and positioning accuracy is poor.	✅ Millimeter-level closed-loop control S-curve acceleration and deceleration

Energy-saving speed regulation and control for heavy-duty equipment such as pumps, fans, and compressors used in industries including mining, metallurgy, power generation, petrochemicals, and water conservancy. ；

Mine shaft Drilling a well Elevator ： Suitable for multi-rope friction type / Single-rope winding hoist