Wanlida Hybrid Harmonic Filter - Chinaprice: contact company for price
variable amplitude and frequency and compensate reactive
AHF Technical Principle
Active harmonic filter (APF/AHF) is new power electronic
equipment which can dynamically filter harmonic with
power, it overcome the shortages of conventional LC filter
and obtained the better compensation performances than
The right diagram is schematic diagram of active harmonic
filter (APF/AHF), where, Vs is AC power supply, nonlinear
load is harmonic source, it generates harmonic and consumes
reactive power. AHF system is composed of instruction
current operational circuit and compensation current
generation circuit, the instruction current operational
circuit is mainly to detect current components in harmonic
current and reactive power of compensation object, and the
compensation current generation circuit generates equivalent
compensation current with same amplitude and inverse
polarity with harmonic current to filter harmonics according
to instruction signal, the main circuit adopts PWM
Reduce harmonic distortion
Improve power factor
Reduce line loss
Prevent neutral line from overheat
Prevent power equipments from noise, overheat and vibration
like motor, transformer etc.
Prevent signal transmission equipments from data loss and
Prevent measurement error caused by non-sinusoidal current
Prevent sensitive semi-conductive device from damage
Prevent circuit breaker trip.
Prevent capacitors from burn due to harmonic resonance
Ensure safety of power system and reduce energy consumption
AHF Technical Features
Can filter all kinds of harmonic currents
Filtering capability >95% for aimed harmonic
Traction level IGBT module, 20KHz switching frequency
Response time <10ms
Single capacity up to 300A
Suppress three-phase unbalance
Conform to IEEE Std. 519-1992, GB/T 14549
Can be used as harmonic source
Apply closed-loop control, and ensure filtering accuracy
Can set filtering mode and select harmonic filtering type
Adapt automatically to impedance change of power network
Can connect 690V system(CE/C-tick) and 600V system(cUL)
Parallel connection, easy for filtering capacity expansion
Modularized design, easy for maintenance
Perfect protection functions
Faults record and history inquire
Support multiple communication protocols
Factory Acceptance Test Platform
We built the first-class high voltage and big capacity
active harmonic filter test platform to realize Factory
Acceptance Testing for whole machine before delivery.
Model and Dimension
The above dimension is our standard cabinet for 400V APF
(Active harmonic filter) and the wall-mounted cabinet or
other voltage level APF can be designed according to
requirements of users.
- Posted By: Zhuhai Wanlida Electric Co., Ltd.
- Phone: 867563395623
- Address: Wanlida Relay Protection Industrial Park, No. 1 Te, Zhuhai, China
- Website: http://www.zhwld.com/en
Published date: August 23, 2013 -
- Business Description: Incorporated in 1991, Zhuhai Wanlida Electric Co., Ltd. (www.zhwld.com)
('the Company'), is located in Relay Protection Industrial Park, No.1
Technology Road, Science and Technology Innovation Coast, High tech
Zone, Zhuhai City, coving a land area of approximately 60 thousand
square meters (including Park 1 and Park2). The Company was listed for
equity financing on November 13, 2007 (equity securities abbreviated as:
Wanlida stock certificates, code: 002180), with a registered capital of
124,980,000 Yuan. The Company keeps on her aggressive 'production,
study, research and application' co operation with the famous academies
such as Tsinghua University, Chinese Academy of Sciences and Central
China University of Science and Technology and carries out relevant
technology innovation. It is a national high tech enterprise that deals
with specialized development, production and sales of substation
integrated automation systems and Medium voltage variable frequency
drives, Medium voltage magnetically controlled soft starters, Static
synchronous compensator(STATCOM/SVG), Static VAR compensator(SVC),
Active power filter(APF/AHF), Thyristor switched capacitor bank
(TSC/TSF), High voltage direct current light transmission systems etc
power electronic equipments. In addition, the Company is known as a
famous manufacturer and backbone enterprise of transformer substation
integrated automation and power electronic equipments fields in China,
and it also acts as fresh blood in the field of energy conservation and
Wanlida passed the ISO9001 quality system certification, ISO14001 Environment Management System Certification and OHSMS18001 Occupation Health &Safety Management System Certification; All products passed the test of sated authoritative inspection bureau. And it had been rated as 'National High and New Technology Enterprise', 'Enterprise Recommended by State Economic and Trade Commission for Reconstruction of Urban and Rural Electric Grids', 'Key Software Enterprise Covered by National Program', 'Excellent enterprise of China', 'First choice Manufacturer for Electric Framework Protocol Sponsored by CNPC', 'Excellent Enterprise of Guangdong Province', 'Optimum Good faith Enterprise of Guangdong Province', 'Contract honoring Enterprise of Guangdong Province', 'Top 10 Private Enterprises of Zhuhai City', and 'Enterprise with Grade AAA Bank Credit '.
Wanlida has a very strong R&D teamwork which has a population of over 100 with doctor's degree, postgraduate degree and bachelor's degree etc, and all of the products are designed strictly according to IEC standards; Wanlida has modern standard workshops, it brought advanced SMT production lines and wave soldering machines into company from abroad, and built the first class high voltage and big capacity power electronic equipments assembling and test platform, which is able to realize full load test and ensure that all of products have exquisite technics and reliable quality; At present, Wanlida covers all of domestic areas except Hongkong, Macau and Taiwan, and it also sells the products to Southeast Asia, Middle East, South America, Africa etc over 20 countries.
The Company aims to grow into the most dedicated electric automation enterprise in the world, and commits itself to building the aircraft carrier of power electronic energy efficiency products.
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