As the core component of Huichuan High Voltage Inverter, Huichuan Power Unit HD90 has a wide range of application scenarios in multiple industrial fields due to its efficient, stable performance and advanced control technology.

The following is a detailed analysis of the main application scenarios of Huichuan power unit HD90:

1. Metallurgical industry

Sintering desulfurization and dust removal fan drive

Application case: The sintering desulfurization and dust removal fan driven by a 10kV/1250kW motor in a certain steel enterprise is retrofitted with HD90 series high-voltage frequency converter. By integrating manual bypass scheme with DCS system, remote speed regulation and monitoring can be achieved, significantly reducing energy consumption and minimizing mechanical impact.

Advantages: Vector control technology optimizes motor operating efficiency; The asymmetric bypass function ensures that the system can continue to operate in the event of a single unit failure; The soft start feature extends the lifespan of the equipment.

Control of blast furnace blower and exhaust system

Typical requirement: Accurate adjustment of flue gas flow is required in metallurgical production processes to accommodate changes in process parameters. The multi-stage speed setting and dynamic response capability of HD90 meet the demand for air volume adjustment under complex working conditions, while reducing energy waste caused by baffle throttling.

2. Power industry

Energy saving renovation of primary and induced draft fans in thermal power plants

Project example: A thermal power plant of a chemical company replaced the primary fan (400KW) and induced draft fan (560KW) with HD90 frequency converters, and achieved precise matching of air volume with load demand through closed-loop vector control algorithm, with a power saving rate of over 25%. After the transformation, the starting current of the motor smoothly increases to avoid impact on the power grid.

Technological innovation point: The starting function of the flying car can automatically search for synchronous frequency under unknown motor speed; Dual power redundancy design ensures control stability.

Upgrading the frequency conversion of auxiliary equipment in power stations

Extended application: Suitable for variable flow control of circulating water pumps and condensate systems in power plants. By adjusting the speed instead of traditional valve shut-off methods, it reduces the risk of pipeline pressure loss and water leakage.

3. Building materials industry

Control of circulating fan in slag powder production line

Implementation effect: A cement enterprise uses HD90-J100/800-DB to drive a 630kW vertical mill circulating fan, which is powered by a phase-shifting transformer and cascaded PWM modulation to output sine waves, reducing motor harmonic losses. On site data shows that after the renovation, the operating current of the fan is stable and the maintenance cycle is extended.

Process value: Supports multi-stage speed preset to meet the needs of different production stages; The unit bypass mechanism ensures continuous production without stopping.

Optimization of the main transmission system of rotary kiln

Potential scenario: In the new dry process cement kiln system, HD90 can achieve collaborative optimization of material conveying and calcination processes through precise torque control, improving the overall energy efficiency ratio of the production line.

Mining and Port Machinery

Drive for large compressors and electric shovel elevators

Performance verification: HD90 has the characteristic of instantaneous overload capacity up to 300% of rated torque, which can meet the frequent start stop and heavy load impact requirements of mining equipment. Its IP protection level is designed to adapt to harsh dust environments.

Typical configuration: Adopting an air conditioning internal circulation cooling scheme to cope with high temperature conditions, ensuring the long-term reliable operation of the power unit.

4. Petrochemical industry

Variable frequency speed regulation of reactor agitator

Safety advantage: In high-temperature and high-pressure reaction environments, the explosion-proof design and emergency bypass switching function of HD90 ensure the uninterrupted operation of key equipment, avoiding the risk of chemical raw material deterioration caused by sudden power outages.

Control of air compressor unit in air separation unit

Energy efficiency improvement: By adjusting the speed of the air compressor through pressure closed-loop feedback, constant pressure gas supply can be achieved while reducing ineffective power consumption, especially suitable for intermittent gas consumption processes.

Municipal Environmental Protection

Energy saving operation of sewage treatment aeration system

Intelligent regulation: Real time adjustment of blower speed based on dissolved oxygen concentration monitoring data, ensuring the required amount of oxygen for biochemical reactions while minimizing power consumption. The low-speed high torque characteristic of HD90 is suitable for this type of load characteristic.

Renovation of the head pumping station for water intake in the water treatment plant

System integration: Utilizing the built-in PID regulation function of the frequency converter to maintain a constant liquid level in the clean water tank, reducing waste of clean water while minimizing the impact of pressure fluctuations on the pipeline network.