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This section provides an overview for ac reactors as well as their applications and principles. Also, please take a look at the list of 11 ac reactor manufacturers and their company rankings. Here are the top-ranked ac reactor companies as of December, 2024: 1.Vokek Group Co., LTD., 2.Sentinel Power Quality, 3.KOSED.
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Engaged in research on nitride semiconductor growth using the MBE method at Waseda University Graduate School. After graduating from graduate school in 2016, he joined a non-ferrous metal manufacturer.
Engaged in equipment maintenance and engineering work at metal smelting plants. Moved to a chemical manufacturer in 2022. Engaging in similar tasks.
An AC reactor is a type of element inserted into an AC electrical or electronic circuit.
They are mainly installed to improve the power factor of inverters and to suppress harmonics.
AC reactors are used in AC circuits. Specific uses are as follows:
To realize a decarbonized society, which has become a hot topic in recent years, more and more equipment in the industrial world uses electricity that does not directly generate CO2 emissions. AC reactors are in increasing demand for AC power transmission and AC to DC conversion devices such as inverters.
The AC reactor consists almost entirely of a coil. It consists of a coil, insulation filler, girders, and other components. A coil is a component made by winding an electric wire multiple times. Coils inserted in power supplies are also called choke coils.
There are two types of reactors: an iron-core type reactor, in which the wire is wound around an iron core, and an air-core reactor, which does not have an iron core.
Insulating filler is a material used to insulate electricity. Mainly, insulating resin and oil paper are used for this purpose. Since coils and mounts are made of metal, the heat resistance temperature of the reactor is generally determined by the insulating filler.
Since a coil is a mass of metal wires wound several times, it is heavy compared to its volume. Therefore, they are supported by metal mounts, which in many cases have holes drilled in them to sew them to the floor or wall.
The "AC" in AC reactors stands for "Alternating Current". On the other hand, there is an element called a DC reactor that handles "Direct Current". Both are used for inverters.
Inverters convert AC to DC internally and switch the DC to output AC.
DC reactors are typically connected to the internal DC circuit of the inverter. AC reactors are installed when harmonics are still a problem.
For small load circuits where lagging power factor and harmonics do not need to be taken into account, both reactors may be omitted.
Reactors have different names depending on their applications.
Current-limiting reactor
Electric circuits are equipped with circuit breakers that can safely interrupt the circuit in the event of a short-circuit accident.
Since reactors have current-slowing characteristics, current-limiting reactors are installed in series with the circuit to limit the current at the time of a short circuit.
Shunt Reactor
Shunt reactors are reactors for power factor correction. When power consumption is low at night, for example, the transmission and distribution lines may advance phase. By installing a shunt reactor in parallel with the circuit, the power factor of the power line can be improved by slowing down the phase advance.
AC / DC reactor
As mentioned above, these reactors are installed to improve the power factor of inverters and suppress harmonics. Although these reactors differ in scale and materials, there is no difference in structure. All reactors have a structure in which wires are wound in a coil.
*Including some distributors, etc.
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Controlled Magnetics Inc., founded in 1988 with headquarters in the USA, is a manufacturer of transformers and power conversion magnetic products. The company's products include single-phase control transformers, three-phase drive isolation transformers, machine tool control transformers, drive isolation transformers, and AC and DC inductors. Controlled Magnetics’ products are also found in power systems for factories, hospitals, medical facilities, and photovoltaic systems. The company also offers custom transformers for machine tool control, medical, marine, and computer-grade applications, as well as repair and rebuilding services.
Hill Machinery Sdn. Bhd., established in 2014 with headquarters in Semenyih, Malaysia, is a designer and manufacturer of consumer-consumption liquid packing, packaging machines, and complete processing solutions for beverage companies. The company creates its products by absorbing technologies from other companies in the industry and expanding the operations of its manufacturing plant in China, from which it produces automatic washing machines and filling and sealing assembly lines for consumer beverages and drinking water. Its solutions are also used for processing and packaging juice, wine, and aluminum canned drinks.
Vokek Group Company Limited (Vokek), founded in 2001 and headquartered in Shenzhen, China, is a specialized researcher, manufacturer, and marketer of solar power products. The company's solar power products include solar pump inverters, off-grid power inverters, and solar charge controllers used for residential, commercial, and industrial new energy supply systems. It also offers custom design, engineering, and production of systems to suit specific requirements and applications, and it supplies its products and systems to more than 100 countries.
SK Electric Power Supply, founded in 1993 and headquartered in Shanghai, China, is a manufacturer of transformers, power distribution units, and sheet metals. The company mainly produces power transformers, high-frequency and planar transformers, AC and DC reactors, and X-ray sources. It also offers full-service sheet metal manufacturing and assembly of cable and harnesses, printed circuit boards, switchboards, and control cabinets. The company holds ISO 13485, ISO 9001, ISO 14001, and OHSAS 18001 certifications. It caters to diverse sectors, including medical, industrial machinery, railway and transportation, consumer electronics, and new energy.
Reelen Enterprise, established in 2009 and located in Yueqing City, China, is a manufacturer and exporter specializing in a wide range of electrical products such as power transformers, AC reactors, and more. The company's diverse product line includes machine tool control transformers, lighting control transformers, auto voltage-reducing starter transformers, three-phase isolation transformers, step-up and step-down transformers, and others. It exports these products to various countries, including the US, Southeast Asia, the Middle East, Europe, and South America.
Shanghai Eagtop Electronic Technology Inc., established in 2003, is a manufacturer of passive power electronics devices, based in Shanghai, China. The company’s main products include film capacitors, laminated busbars, composite superconducting flat heat pipes, resistors, and EMC filters. These products are used in many fields such as industrial drive, new energy, railway transportation, and power quality. It provides comprehensive solutions to the electronic passive device for worldwide customers with over 1,000 well-trained employees. It has also passed the certification of quality management system ISO9001:2008 and ISO/TS16949-20094.
Shenzhen Kewo Electric Technology Co. Ltd., established in 2010 and based in Shenzhen, Hong Kong, operates as a manufacturer of AC drives, variable frequency inverters, soft start inverters, solar pump inverters, etc. The company's products include drive peripheral equipment, variable frequency inverters, solar pump inverters, solar pump inverter cabinets, and more. These products serve various sectors, such as industrial automation, cement, textiles, oil & gas, water treatment, and more. The company has established two modernization production lines, a digital quality control system, a code bar tracking system, an ERP management system, etc.
HOWCORE is a manufacturer and supplier of electromagnetic and power quality solutions founded in 2006 and headquartered in Shanghai, China. The company’s product portfolio includes reactor series, resistors, filters, transformers, and inductance series. It also offers DC braking modules, heaters, load series, and capacitors. These products are designed to minimize electricity consumption, reduce grid pollution, and improve power transmission efficiency. The company is certified to ISO 9001, CE, and UL. It serves the needs of various sectors, including petroleum, chemical, metallurgy, transportation, and construction.
Toshiba Schneider Inverter Corporation, established in 1998 and based in Nagoya, Aichi Prefecture, is a manufacturer and supplier of industrial inverters. The company's product range includes the high-performance driveTOSVERT VF AS3, CompactTOSVERT VF S15, and Compact. SimpleTOSVERT VF nC3, and related components. These products are designed for a variety of applications, from enhancing energy efficiency in machinery to precise operation controls. They serve industries such as food processing, machinery tools, farming, and wrapping. Additionally, its services span development, design, manufacturing, and product testing.
Yaskawa America Inc., started in 1967 and based in Waukegan, Illinois, is a manufacturer of machine controllers, industrial robots, and variable frequency drives and is part of Yaskawa Electric Corporation. Some of its products include industrial AC drives, machine controllers, and IEC programmable robots. The company incorporates the Kaizen method of continuous incremental improvements and Total Quality Management processes to prevent manufacturing defects, and its distributors must be certified and re-certified every two years. It is ISO 9001 certified and is the only industrial drives and motion control manufacturer to win the Deming Medal.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Vokek Group Co., LTD. |
13.5%
|
| 2 | Sentinel Power Quality |
10.8%
|
| 3 | KOSED |
10.8%
|
| 4 | SK Electric Power Supply |
10.8%
|
| 5 | SHENZHEN KEWO ELECTRIC TECHNOLOGY CO., LTD. |
10.8%
|
| 6 | Toshiba Schneider Inverter Corporation |
10.8%
|
| 7 | Reelen Enterprise |
8.1%
|
| 8 | Controlled Magnetics, Inc |
8.1%
|
| 9 | Yaskawa America, Inc. |
8.1%
|
| 10 | EAGTOP |
5.4%
|
Derivation Method
The ranking is calculated based on the click share within the ac reactor page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
6 | 60.0% |
|
United States of America
|
1 | 10.0% |
|
United Arab Emirates
|
1 | 10.0% |
|
Japan
|
1 | 10.0% |
Republic of Korea
|
1 | 10.0% |
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