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- As a means of transportation, the subway has a history of nearly 160 years, and its traction technology is constantly changing.
As a means of transportation, the subway has a history of nearly 160 years, and its traction technology is constantly changing.
As a means of transportation, the subway has a history of nearly 160 years, and its traction technology is constantly changing. The first-generation traction system is a DC motor traction system; the second-generation traction system is an asynchronous motor traction system, which is also the current mainstream traction system. ; The permanent magnet traction system is currently recognized by the industry as the development direction of the next-generation new technology for the traction system of rail transit vehicles. A permanent magnet motor is a motor with a permanent magnet in the rotor. It has many advantages such as reliable operation, small size, light weight, low loss and high efficiency, and belongs to ultra-high-efficiency motors. Compared with the asynchronous motor traction system, the permanent magnet traction system has high efficiency, low energy consumption, more obvious energy saving effect, and very significant economic benefits.
OPPAIR screw air compressor is a new generation of permanent magnet synchronous traction system, including high-efficiency hybrid reluctance traction motor, traction converter, braking resistor, etc. Compared with asynchronous motor traction system, the train equipped with this system consumes less energy during traction , the feedback energy is more during electric braking. Among them, the high-efficiency hybrid reluctance motor has the remarkable characteristics of simple structure, reliable operation, small size, light weight, low loss, high efficiency, and flexible appearance and size of the motor.
OPPAIR screw air compressor motor technology - leading design method
Local optimization Stator parameter optimization: number of turns, tooth width, slot depth, etc.; rotor parameter optimization: number of magnetic isolation bridges, position, air slot shape, position, etc.; , air gap size; high-efficiency zone orientation optimization and NVH design target setting;
OPPAIR screw air compressor motor technology - design method of system efficiency
It has the ability to analyze working conditions, study the characteristics of electrical control loss of the motor, and optimize the system efficiency through joint design.
OPPAIR screw air compressor motor technology - design method of noise and vibration
NVH conducts design testing and verification from system to component, accurately locates problems, and ensures product NVH characteristics. (Electromagnetic NVH, Structural NVH, Electronically controlled NVH)
OPPAIR screw air compressor motor technology - anti-demagnetization design method
Permanent magnet demagnetization check, the back EMF reduction does not exceed 1%
Three-phase short-circuit demagnetization check Low speed 3 times overload demagnetization check Constant power 1.5 times rated speed operation Demagnetization check Inovance ships more than 3 million high-efficiency motors using rare earth permanent magnets annually
OPPAIR Screw Air Compressor Motor Technology - Test Capability
The total area of the test laboratory is about 10,000 square meters, with an investment of about 250 million yuan. The main equipment: AVL dynamometer (20,000 rpm), EMC darkroom, dSPACE HIL, NVH test equipment; the test center is in accordance with ISO/IEC 17025 (CNAS laboratory accreditation Guidelines) requires operation management and has been accredited by CNAS.