APF in hospital
Release Time : 2019.07.10
Modern commercial buildings use switch-mode power supplies
(SMPS) and uninterruptible power supply (UPS) devices, which are the main
sources of harmonic distortion, affecting the normal use of equipment in the
grid system, causing unnecessary losses to users. The active filter device
(APF) independently developed by Sanhe Power Tech(Shenzhen) Co., Ltd. can help
solve the power quality problem in this harmonic environment and greatly
improve the equipment performance. The hospital is most typical application.
Power Quality Solution for Hospital
Hospitals are places where power quality requirement is very high. A large number of harmonics will inevitably cause serious harm.
l voltage fluctuations caused by harmonics will affect precision equipment.
l Harmonics to image acquisition equipment
l Harmonics to therapeutic nursing equipment
l the power transformer heating,the power cable heating, causing safety accidents,and the losses caused are immeasurable.
Sanhe active power
filter (APF) is one for all functions module including harmonic
filtering,reactive power compensation and unbalance stabilization. It
is connected in parallel with non-linear loads, and uses one set of current
transformers (CT) to detect the load current. It calculates each order harmonic
current by FFT algorithms in its DSP microchips, and then generates a
compensating current with the same amplitude but opposite phase angles to the
detected harmonic current, which cancels out the original load harmonics.
l Compact and reasonable structure, flexible installation.
l Double DSP control system, using vector screening technology.
l Dynamic filter 2 to 51th harmonics, may optionally specified harmonic filter.
l Support your telecommunication system by Modbus R485 protocol.
l Completely automatic function:work as harmonic filtering, power factor correction, and unbalance
stabilization at the same time.