How Can Small Indoor Elevators Be More Energy Efficient?

Posted by odsondon on March 26th, 2019

For the energy-saving مصعد داخلي صغير, the first generation of energy-saving technology is the VVVF technology introduced from abroad. This technology is the first generation energy-saving elevator because it adopts the technology of variable frequency variable-speed shifting, which makes the elevator run more energy-efficient than the previous elevator. Technology; and the second generation of energy-saving technology of the elevator is the application of permanent magnet synchronous technology on the elevator mainframe, because the technology can use the relatively small power to meet the elevator operation, so that the elevator can save more power than the ordinary VVVF worm and worm mainframe.
    The elevator uses the inverter to drive the motor. During the operation of the elevator, there are two states: electric operation and power generation operation (also called brake operation). The mechanical kinetic energy generated when the elevator starts to reach the maximum operating speed is also the largest, and the elevator is gradually decelerated before reaching the target layer, and this deceleration process is a process in which the elevator releases the mechanical kinetic energy. In the system design, the motor can convert the mechanical energy of this motion into electrical energy stored in the large capacitor inside the inverter (the power generation state will generate a part of energy, which we call renewable energy). In fact, the more power that is sent back to this large capacitor, the higher the capacitor voltage. If the power stored in the capacitor cannot be released in time, the elevator may generate an overvoltage fault, which will directly cause the elevator to fail to operate normally. Therefore, in use, these energy is consumed as thermal energy by an external braking resistor, and the braking process causes the temperature of the entire control panel to rise.
    Prior to this, many companies have adopted the method of energy feedback. Although the method is theoretically feasible, it cannot be promoted in practice. There are two reasons for this. First, the energy feedback elevator power generation band is unstable, which will impact the power grid. If the community is used, it will cause damage to household appliances in the community; second, the national grid does not allow this method, so energy feedback cannot be achieved. The most important reason why it can't be done is that the elevator runs and generates electricity in an instant, which will affect the sine wave of the power grid and have a strong difference, so it will cause impact on the power grid. The reason why it is impossible to promote at home and abroad is here. However, the principle of energy conservation is affirmative, and it is also the transitional stage of the third generation of energy-saving elevators.
    The third generation of energy-saving elevator technology is to truly store and reuse the power generated by the elevator. It must include the storage and storage of the elevator energy, the use of stored energy, and the modification of the control program. This not only makes the elevator electric energy reusable, but also saves energy. It can also increase the uninterruptible power supply function that the elevator continues to use after the power failure through the electric energy storage technology. This not only achieves the purpose of power saving, but also avoids the work of high-power resistors, which greatly improves the operation of the elevator system, and avoids the system efficiency caused by the use of energy-consuming resistors, the heating of the elevator control cabinet, and the ambient temperature. Too high a disadvantage. At the same time, the electric energy is recycled and utilized, and the annual energy saved is considerable.
    This article will explain how to truly re-use electrical energy, and fully realize the full utilization of elevator energy. It is also the true third-generation energy-saving elevator technology. This technology is more advanced than the US Otis in the new Tianjin project, and is more advanced than other foreign brand technologies. It can also add elevator uninterruptible power supply function and elevator power supply. Pressure function.