DC vector variable frequency speed regulation technology

A full DC inverter rail transit vehicle air conditioning unit. The condensing fan, ventilator and compressor are all driven by a permanent magnet synchronous motor. It has high efficiency and stepless speed regulation. It can realize the real-time adjustment of compressor speed and air volume according to the load demand, and the energy efficiency ratio is greatly improved.

Fuzzy variable frequency control technology

Through the temperature, humidity, pressure, passenger flow, air volume and other parameters, logic calculations and control systems are carried out according to human comfort, which greatly improves comfort.

Thermodynamic optimization technology of electronic expansion valve in air conditioning system

Heat pump heating adopts the principle of reverse Carnot cycle, which absorbs heat from a low-temperature heat source (outside the car) and supplies heat to a high-temperature heat source (in the car). The heat supplied to the room is equal to the heat absorbed from the outside plus the energy input by the compressor. When the load changes, the frequency changes, and the thermodynamic optimization technology always matches the air-conditioning system to operate at the highest efficiency with the least power consumption.

HVAC Constrained Adaptive Control Technology

It can automatically find the maximum cooling or heating capacity under parameters such as ambient temperature, load, etc., to avoid repeated start and stop of the compressor affecting the comfort of the passenger compartment, avoid damaging the compressor. It improves the reliability and practicability, reduces switching losses, saves energy and protects the environment. It is also scientific, intelligent, safe and reliable.