New motor technology leads the industry to achieve a power-saving leap
As an energy conversion device, electric motors are widely used in industrial and agricultural production, transportation, national defense, commercial and household appliances, and medical electrical equipment.
Our most common and familiar electric motor is the main component in vehicles such as automobiles. It can convert electrical energy into mechanical energy. It is very convenient to use and control. It has the ability of self-starting, accelerating, braking, reversing, slamming, etc. Meet various operational requirements;
In addition, the motor has high working efficiency, no smoke, odor, no pollution to the environment, and low noise.
Review of the development of electric motors
AC asynchronous motor is the earliest kind of electric motor. It is easy to use, reliable in operation, low in price and firm in structure, but with low power factor and difficult speed regulation.
Synchronous motors are commonly used in high-capacity, low-speed power machines. Synchronous motors not only have a high power factor, but their speed is independent of the load and is determined only by the grid frequency. The work is more stable. DC motors are often used where wide-range speed regulation is required. However, it has a commutator, which is complicated in structure, expensive, difficult to maintain, and unsuitable for harsh environments.
After the 1970s, with the development of power electronics technology, the speed control technology of AC motors has gradually matured, and the price of equipment has been decreasing, and it has begun to be applied.
Motor technology adjustment to solve load and energy problems
For more than a decade, the Chinese government has been committed to promoting motor speed control technology, and various industries have adopted motor speed regulation to some extent. According to the recent survey results of oil, electricity, building materials, steel, nonferrous metals, coal, chemical, paper, textile and other departments, the application of motor speed control in petroleum, building materials and chemical industries is better. In the current 400 million kW motor load, about 50% of the load is variable, and 30% of them can solve the load variation problem by motor speed regulation.
In addition, the mechanical industry and other relevant departments have vigorously grasped the power-saving work of electric motors, organized and led relevant research institutes and enterprises, successively designed and manufactured a variety of energy-saving electric motors, and ordered the elimination of 63 kinds of high-energy-consuming electric motors and the promotion of 24 kinds of energy-saving electric motors. Has achieved certain results. These energy-saving products are mainly divided into two categories: one is a high-efficiency motor that improves the efficiency of the motor, and the other is a speed-regulating motor.