PFU elevator feedback emergency device elevator UPS

(1) Having all the functions of emergency power supply for elevators;

(2) The efficiency of regenerative energy recovery is as high as 97.5%, with significant energy-saving effects and a comprehensive energy-saving efficiency of 20-50%;

(3) Equipped with built-in reactors and noise filters, it can be directly connected to the power grid without causing interference to the grid and surrounding electrical equipment;

(4) Special battery management ensures that the battery life is more than three times that of other elevator emergency power equipment in the industry;

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

(6) When the power grid is interrupted, PFU ensures that the elevator stops nearby or returns to the ground floor and opens the door. When the power grid is normal, it is an energy regeneration feedback device, and the economic benefits generated during its service life far exceed the investment cost of the equipment;

(7) Adopting electromagnetic isolation technology to isolate the battery from three-phase electricity, ensuring the safety of the battery and frequency converter;

(8) Adopting high-speed DSP central processing unit: upgraded with a new generation of feedback control software, with accurate control accuracy, good stability, low harmonics, and strong anti-interference ability;

(9) Adopting the latest SVPWM modulation technology in the industry: upgrading the new generation SVPWM vector control technology to meet all the current harmonic requirements of the national standard for elevator energy feedback;

(10) 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 Devices" and TSG T7007-2016 "Elevator Type Test Rules" tests, report number: WT NET 19-155;

(11) 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;

(12) Preventing islanding effect: The software monitors the status of the air power grid in real time. When the power grid is cut off, the feedback of electrical energy to the grid will immediately stop to prevent islanding effect;

(13) Adopting LC filtering technology: optimizing LC filtering to effectively suppress harmonics and electromagnetic interference, voltage and current THD<5%, ensuring feedback of clean electrical energy;

(14) Adopting phase sequence automatic discrimination technology: upgrading phase sequence automatic discrimination technology, the phase sequence of the three-phase power grid can be freely connected without the need for manual distinction of phase sequence;

(15) Upgraded hardware design exceeds 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 requirement of 30mA;

(16) Hardware design is highly integrated to improve product reliability: all hardware design circuits adopt PCB integrated circuit design to enhance product consistency and reliability;

(17) Standard air switch and fuse: standard DC and three-phase AC fuses, standard air switch, short circuit protection in place, ensuring safe operation of the elevator;

(18) It can 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;

A certain hotel has six 30KW Mitsubishi elevators, one of which is equipped with a PFU emergency power supply with power generation function.

1. There has been no elevator shutdown incident since the installation of this equipment (6 months);

2. After 30 hours of running the test, the results are as follows:

Node table degree display: 20 degrees

Electricity consumption meter reading: 40 degrees

Total power consumption=Energy saving meter degree+Electricity consumption meter degree=60 degrees

Power saving rate=30 degrees/60 degrees=33%

3. One year comprehensive energy-saving calculation

1) On average, each elevator saves 480 kWh of electricity per month

2) Air conditioning power reduced by 4P, monthly energy savings: 1920 kWh

3) Annual comprehensive energy savings: 23040 kWh

4. Other cost savings:

It can reduce the investment or use of cooling equipment, decrease the occurrence of elevator failures, reduce elevator maintenance costs, extend the service life of other components in the machine room, save maintenance costs, avoid personnel incidents caused by elevator failures during use, improve customer satisfaction, reduce customer complaint rates, and reduce costs such as battery replacement labor and battery purchase.

Elevator Emergency Power Supply Parameters