PFE elevator feedback energy saving device
PFK elevator star centralized elevator feedback energy-saving device can centrally feed back the regenerative kinetic energy and mechanical energy of 1 to 6 elevators to the power grid to achieve the purpose of elevator energy saving. It is applied to multiple vertical elevators to recover the regenerative energy generated by the DC bus of 1 to 6 elevators to the power grid.
PFK elevator star centralized elevator feedback energy-saving device has the effect of electromagnetic isolation. There is no direct electrical connection between multiple parallel feedback elevators, which is completely electromagnetic isolation, and each elevator does not affect each other. It does not change the original control method of the elevator, and is "redundant" with the original system of the elevator to ensure the safe operation of the elevator. PFK elevator star centralized elevator feedback energy-saving device takes each elevator room as a unit, centralized control, unified feedback, and higher efficiency.
⑴ Adopt military high-speed DSP central processing unit
High feedback efficiency, accurate control accuracy, good stability, less harmonics, strong anti-interference ability
(2) Adopt SVPWM modulation technology
SVPWM modulation technology can realize DC to AC, perfectly restore the three-phase output voltage, and can output a perfect current waveform through the superposition effect of the filter and the three-phase power grid
⑶ Adopt LC filter technology
Effectively suppress harmonics and electromagnetic interference, current and voltage THD <5%, to ensure the feedback of clean electric energy
⑷ Adopt phase sequence automatic identification technology
The phase sequence of the three-phase power grid can be connected at will, and there is no need to manually distinguish the phase sequence.
⑸ Built-in fuse
The short circuit protection is in place to ensure the safe operation of the elevator
⑹ It can automatically escape from the fault to ensure the normal operation of the elevator
It is "mutually redundant" with the original control system of the elevator, and does not change the original control method of the elevator.
⑺ Using a variety of research and development technologies, compatible with all brands of elevator inverters
⑻ Significant energy saving effect, comprehensive power saving efficiency of 20-50%
⑼ The recovery efficiency of regenerative electric energy is as high as 97.5%
⑽ Easy to install, debug, operate and maintain
⑾ PFK elevator star centralized feedback energy-saving device, the regenerative kinetic energy and mechanical energy of 1 to 6 elevators are fed back to the power grid in a centralized manner to achieve the purpose of green energy saving of elevators
⑿ PFK elevator star centralized feedback energy-saving device, with higher safety, electromagnetic isolation between each elevator, and electrical isolation between elevator and feedback
⒀ PFK elevator star takes each elevator room as a unit, centralized control, unified feedback, higher efficiency
⒁ PFK elevator star will not have any restrictions on the way of feeding back to the power grid, and can freely feed back to the third-party power grid, making the system more reliable
⒂ PFK elevator star ensures that there is no mutual influence between different elevators, each elevator has the original independence, and the operation is more stable
