PFE elevator feedback energy-saving device

Design concept:

The design concept of PFE elevator feedback energy-saving device is to install a parallel elevator feedback energy-saving device without changing the original elevator control system. It is to deeply explore energy-saving space and achieve emission reduction goals for elevators that have already applied frequency conversion technology.

Product Features:

(1) Using high-speed DSP central processing unit:

Upgrade to a new generation of feedback control software, with accurate control accuracy, good stability, less harmonics, and strong anti-interference ability;

(2) Adopting the latest SVPWM modulation technology in the industry:

Upgrade the new generation SVPWM vector control technology to meet all the current harmonic requirements of the national standard for elevator energy feedback;

(3) Meet the national standard for elevator energy feedback devices:

Upgrade the new generation of control software and hardware, pass the GB/T 32271-2015 "Elevator Energy Feedback Device" and TSG T7007-2016 "Elevator Type Test Rules" tests, report number: WT NET 18-410;

(4) Standard RS485 communication and feedback power display:

The product comes standard with RS485 communication and keyboard communication display, and all software control parameters are open for display and debugging, making product monitoring convenient;

(5) Prevent islanding effect:

The software monitors the status of the air power grid in real-time, and immediately stops the feedback of electrical energy to the grid when the grid is cut off, to prevent islanding effects;

(6) Adopting LC filtering technology:

Optimize LC filtering to effectively suppress harmonics and electromagnetic interference, with voltage and current THD<5%, ensuring feedback of clean electrical energy;

(7) Adopting phase sequence automatic discrimination technology:

Upgrade the automatic phase sequence discrimination technology, allowing the phase sequence of the three-phase power grid to be freely connected without the need for manual differentiation;

(8) Upgrading hardware design beyond the national standard requirements for voltage resistance:

The newly upgraded hardware design meets the requirement of a 1-minute withstand voltage of 2500 volts AC, with a leakage current of less than 2mA, far below the national standard of 30mA;

(9) Highly integrated hardware design improves product reliability:

Except for reactors, all hardware design circuits adopt PCB integrated circuit design to improve product consistency and reliability;

(10) Enhance the feedback current level of the machine:

Newly upgraded hardware and control software have reduced the machine volume of the product by over 31%, while increasing the feedback current by 34%;

(11) Standard air switch and fuse:

Standard configuration includes DC and three-phase AC fuses, as well as air switches. Short circuit protection is in place to ensure the safe operation of the elevator;

(12) Automatically disconnect from faults to ensure the normal operation of the elevator:

It is redundant with the original control system of the elevator and does not change the original control mode of the elevator;

(13) Adopting multiple innovative technologies, compatible with all brands of elevator frequency converters;

(14) The energy-saving effect is significant, with a comprehensive energy-saving rate of 20% to 50%;

(15) The regenerative energy feedback efficiency is as high as 97.9%;

(16) Easy installation, debugging, and operation, convenient maintenance and upkeep;