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This section provides an overview for automatic voltage regulators as well as their applications and principles. Also, please take a look at the list of 36 automatic voltage regulator manufacturers and their company rankings. Here are the top-ranked automatic voltage regulator companies as of December, 2024: 1.Cyber Power Systems USA, Inc, 2.Power Systems & Controls, Inc, 3.GENERAL POWER LIMITED, INC.
Table of Contents
An automatic voltage regulator is a regulator that uses the properties of a thyristor, a semiconductor rectifier element, and is used when you want a certain circuit control to have a switching mechanism in response to an input signal.
Automatic voltage regulators are often incorporated as relay components in circuit design, but diodes and triacs are similar in their behavior.
Depending on the process you want to implement, you can control the output you want to obtain for various inputs by using these three types of modules that provide different outputs for different input signals.
As described below, automatic voltage regulators can be used to control temperature precisely by designing circuits that take advantage of the thyristor's unique feature of acting as a switch and continuing to conduct once it conducts until the current generated at that time runs out.
For example, in precision air conditioning control, it is necessary to monitor temperatures at high cycles and turn heaters on and off accordingly.
When trying to express such control with only one contact open/close, it can be easily implemented by using a thyristor automatic voltage regulator.
The internal structure of the thyristor automatic voltage regulator uses a thyristor with a terminal called a gate terminal added to the diode.
The internal structure of a diode consists of n-type and p-type semiconductors connected in alternating layers, and conducts only when voltage is applied from the anode side to the cathode side. This characteristic can be used as a transmission switch for electric circuits in one direction.
Thyristors, on the other hand, have a gate terminal attached to the p-type semiconductor portion of one of the diodes, and will not conduct unless a positive bias is applied from the anode side to the cathode side in the circuit and a gate current flows.
Once gate current flows, the device will conduct like a diode, and will continue to conduct until the anode-to-cathode bias becomes negative or the gate current becomes zero.
Due to the principle of switching by current conduction, it has extremely high responsiveness. Taking advantage of this property, it is possible to perform feedback control of the heater by turning the gate current on and off at high frequency.
AC circuits allow bidirectional positive and negative current flow, but the thyristor can only allow current flow in one direction. Therefore, a single-phase thyristor regulator consists of two thyristors connected in parallel in opposite directions.
There are two types of control methods for automatic voltage regulator: phase control method and frequency divider control method.
The phase control method changes the time to supply power to the load by changing the time (phase) when the current flows to the gate terminal of the thyristor and turns ON.
The disadvantage of the phase control method is that noise is generated when the switch is turned on at high voltage levels.
The frequency divider control method controls the ratio of energizing time (ON/OFF time) within a certain cycle, and is also called zero-crossing control. A trigger voltage is applied to the thyristor element when the AC voltage reaches 0V to regulate the power.
Since both the point at which the thyristor element turns ON and the point at which it turns OFF are at a voltage of 0 V, there is no concern about noise.
As an example of control using a thyristor regulator, we will introduce temperature control of an aluminum heat treatment furnace. An electric furnace is used to heat the furnace by passing electricity through a heater, and the control method used is the automatic voltage regulator.
In the old days, electric furnaces used ON and OFF control, and if the temperature inside the furnace was set at 500°C, the heater would turn off when it reached 500°C. Therefore, the temperature inside the furnace was controlled by an automatic voltage regulator, which is a thyristor regulator. Therefore, the temperature inside the furnace ranged from 495 to 505 degrees Celsius, and the temperature recorder showed a jagged record due to repeated ON and OFF cycles.
In contrast, the automatic voltage regulator can reduce the output of the heater as it approaches 500° C. The output is adjusted to about 50% of the original output, so that the temperature does not exceed 500°C. The temperature range is 499~501°C. The temperature range of 499~501°C can be controlled with high precision.
*Including some distributors, etc.
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Cyber Power Systems USA, Inc was formed in 1997 and is a manufacturer of various power protection equipment products based in Shakopee, Minnesota, United States. The company's product portofolio includes Uninterruptible Power Supply (UPS), Power Distribution Units (PDUs), Surge protectors, and FTTx Telecom equipments. The company also offers solutions for various situations such as home office, business, healthcare, government, and education environment. The company provides service to the customers from the pre-sale stage to the post-sale stage, and support the maintenance of their products.
Power Systems & Controls (PS&C) was incorporated in 1965 in Virginia as a manufacturer and supplier of power conditioning systems. The company manufactures Static (Solid State), Rotary, and Hybrid equipment which includes UPS, DC Power supplies and inverters, and Frequency Converters along with Monitoring, Control, and Power Conditioning Products. They also provide enclosures and shelters such as Living Quarters, Data Centers, Equipment shelters, and Modular Shelter solutions. Industries such as Research and Test Labs, Manufacturing Plants, Universities, and Training Institutes, and places like Airports, Hospitals, and Commercial Facilities utilize the products manufactured by PS&C.
General Power Limited Inc, established in 2003 and based in Florida, United states, is a manufacturer and supplier of power generators. Its product portfolio includes diesel generators, mobile generators, transfer switches, AC alternators, voltage regulators, and generator controls. The company also offers 24/7 customer service, technical support with same-day urgency, single-sourced solutions, and a certified team of experts. They are used in multiple industries including aerospace, machinery industries, power generation, and electrical solutions.
MTS Power Products, a company established in 1981, based in Miami, Florida, USA, is a manufacturer and supplier of generators, automatic transfer switches, voltage regulators, and accessories. The company provides various products such as diesel generators, natural gas generators, propane generators, power inverters, voltage stabilizers, and battery chargers. South Florida’s direct source for professional quality generators, control panels, and voltage regulators. It carries only state of the art generator sets and engines from the world’s greatest and important brands including GM Motors, John Deere, and Mitsubishi Motors
Specialty Product Technologies is based in Elizabethtown, North Carolina, United States, and is a distributor of industrial automation components originally founded in 1901 as Veeder Manufacturing Company before rebranding in 2016. The company primarily stocks products from brands such as Namco Controls, Eagle Signal, and Superior Electric. These include vacuum contactors for extreme industrial environments such as in mining operations, timers for run time monitoring in industrial manufacturing, and limit switches for nuclear power plants. The company mainly markets to clients in the energy production, mining, and industrial manufacturing sectors.
Ohkura Electric Co., Ltd. was established in 1933 and is headquartered in Tokyo, Japan. The company is a manufacturer and designer of measuring and flow control products for industries such as power generation, manufacturing, and semiconductors. The company has three product groups: Industrial Instruments Group, Telemetering & Control Group, and Semiconductor Equipment Group. The Industrial Instruments Group’s products include systems equipment, pressure transmitters, electrometers, and gas monitors as individual components and as systems. The Telemetering & Control Group products include transmission systems, modems, and power converters. The Semiconductor Equipment Group products include renewable equipment, furnaces, and precision thermometers.
EREMU, SA, founded in 1958 and located in Astigarraga, Guipuzcoa, is a manufacturer and repairer of electrical transformers and other electrical equipment. The company offers a range of products, including low-voltage transformers, automatic voltage regulators, cast resin transformers, three-phase autotransformers, and light flow regulators. These transformers have applications in laboratory power supply, aeronautics and defense, renewable energy, telecommunications, and solutions to electrical network issues. It complies with international manufacturing and testing standards, such as IEC, UNE, NEMA, and UL.
Chino, headquartered in Tokyo, Japan, is engaged in the manufacture and sale of measurement and control equipment and instrumentation work. The company was founded in 1936 as Chino Seisakusho. Chino operates in the area of "measurement, control, and monitoring" and contributes to the development of all industrial fields. Major products include recorders, regulators, temperature sensors, data loggers, radiation thermometers, thermal image measuring devices/thermal cameras, composition meters, moisture meters, thickness meters, thyristor regulators, and fuel cell evaluation and testing devices.
Renesas Electronics Corporation was established in 2002 and is headquartered in Tokyo, Japan. Renesas is a global research, design, and manufacturer of semiconductors used in industries spanning automotive, consumer electronics, the internet of things, power & energy, and industrial sectors. Renesas manufactures both analog and digital products. Analog products include amplifiers, audio & video devices, data converters, PLC, and switches & multiplexers. Digital products include microcontrollers, memory components, sensors, wireless connectivity products, and others. Renesas also offers design resources such as kits, development tools, partner programs, and design tools.
Riye Electric, founded in 1991 and based in Taoyuan City, Taiwan, is a manufacturer of transformers, regulators, and uninterruptible power systems. The company produces harmonic filters, DC power supplies, converters, DC-to-AC power transfer systems, and suppression reactors. The products are used in industrial, electrical, automotive, and power transmission industries. The company conforms to ISO 9001:2015 international quality standards and CNS industrial standards. It has cooperation achievements such as Acer, Dlink, Kinsus, Wus, and Tatung.
APC (American Power Conversion Corporation) is a manufacturer and developer of physical IT infrastructure solutions, batteries, and software incorporated in 1981 and based in West Kingston, Rhode Island. The company is a Schneider Electric flagship brand, offering a wide range of products including security and environmental monitoring devices, software for sensors or alarms, server racks and enclosures, and uninterruptible power supplies (UPS) to protect from power outages. APC also provides product maintenance and repair, installation, and recycling services to various clients ranging from electric utility companies to defense contractors.
ST Micro Electronics is a global semiconductor company serving customers with innovations to have a positive impact on people's lives. Their product line is micro electronic systems, such as switches, controllers, sensors and drivers. The main selling point of ST Micro Electronics is its provision of sustainable products, and introducing their electronics to create a more sustainable world. The company, as well as providing the electronic devices, also provides software and support, ensuring that all fields are covered to provide a fully provide a supported and strong relationship with their customer base. ST Micro Electronics believe that technology plays a key role in helping to solve environmental and social challenges, which is why their semiconductor technologies start with their employees, their customers and partners.
Kutai Electronics Industry Co Ltd, established in 1977 and based in Taiwan, China, is a manufacturer and supplier of automation systems and solutions. The company’s product portfolio includes generator automatic voltage regulators, automatic transfer switches, battery charges, controllers, and automatic main failure. Its products are used in multiple industries including automotive, construction, chemical, power generation, oil, and gas. The company also offers quality control with assurance, ISO-certified products, and maintenance services.
Eastern Transformer Industries, a manufacturer and supplier of transformers and related products, was established in 1980 and is based in kanchanbari, Biratnagar-5, Nepal. The company has been providing quality products and services to various industries such as power generation, distribution, and industrial applications. The products include power transformers, distribution transformers, instrument transformers, voltage regulators, and switchgear. It also offers engineering, installation, testing, and maintenance services for its customers and is loyal to excellence and customer satisfaction.
Foshan Unipower Electronic Co., Ltd., a company established in 2002, based in Foshan city, Guangdong province, China, is a manufacturer and supplier of UPS (Uninterruptible Power Systems), inverter and AVR (voltage regulator) products. The company provides various products such as offline UPS, online UPS, power inverter, voltage regulator and battery. These products are used for power protection and backup in various industries such as power generation, distribution and industrial applications. It also offers engineering, installation, testing and maintenance services for its customers and is loyal to excellence and customer satisfaction.
Honle Group Co. Ltd., founded in 1998 and headquartered in Wenzhou, Zhejiang, is a developer, manufacturer, and supplier of electrical power conditioning and switchgear equipment. The company's primary products include voltage stabilizers, distribution transformers, and gas-insulated switchgear units. These products are used in residential, commercial, and industrial situations to provide stable electrical current supply. It also produces outdoor circuit breakers and load break switches suitable for industrial and municipal electricity distribution systems. The company's services include the development and manufacture of custom products as well as partnering with OEMs.
Neopower (a division of NeoPack International Ltd.), based out of Wenzhou, Zhejiang, is a developer, manufacturer, and supplier of power conditioning and supply components and technology. The company's primary products include commercial, residential, and industrial UPS (uninterrupted power supply) systems and AVR (automatic voltage regulator) systems. It also produces single-phase load banks, control transformers, and distribution switchgear. These products are used in various applications to supply constant and stable power for homes, data centers, and process manufacturing equipment. The company's services include the development and manufacture of custom products as well as contract manufacturing.
KEBO Electrical Appliance Company Limited, a company established in 1984 based in Zhejiang province, China, is a manufacturer and supplier of uninterruptible power systems, voltage stabilizers, inverters. The company provides various products such as offline UPS, online UPS, power inverter, voltage regulator and battery. These products are used for power protection and backup in various industries such as power generation, distribution and industrial applications. It has a strong R&D team with 25 experienced engineers, working in 120,000 factory area equipped with advanced manufacturing facilities including PCB, Transformer, Relay, Tooling, Plastic Injection, Metal Sheet, Silkscreen, Assembly Workshops, and 6 Assembly Lines.
Yiyen Electric Technology Co., Ltd, a company established in 2008, based in China, is a manufacturer and supplier of power equipment and system solutions for the Internet of Things for Energy. The company provides various products such as automatic voltage stabilizers, power inverters, energy storage systems, power quality products. These products are used in industries like new energy power generation, industrial automation, automotive. It also offers customer services that include technical support, catalog request, and global coordination. It is a high-tech enterprise devoted to the research and development and intelligent manufacture of electronic and electrical technologies.
DSE, a company founded in 1975 and headquartered in North Yorkshire, England, is a manufacturer and supplier of generator controllers and battery chargers. The company's product portfolio includes generator control modules, intelligent battery chargers, auto transfer switch control modules, and engine and off-highway control modules. These products are used in various industries, including marine, firefighting, paper manufacturing, cement and construction, and other sectors. The company provides services including technical support and sales support. The company is ISO 9001:2015 certified and sells its products directly from the UK office to 150 countries, including the USA, India, and Dubai.
Tomahawk Power, established in 2012 and based in California, United States, is a manufacturer and supplier of power equipments and solutions. The company’s product portfolio includes outdoor power sprayers, light and compact construction solutions, welder generators, and portable power equipment. They also offers same-day shipping and delivery, technical equipment support, and certified graded product warranty. They are used in multiple industries including automotive, construction, chemical, power generation, oil, and gas.
Utility Systems Technologies Inc., established in 1991 and based in Latham, New York, USA, is a manufacturer and supplier of power-conditioning products. The company's products include automatic voltage regulators, active voltage conditioners, and current balancers. These products primarily serve industries such as aerospace, milling, power stations, and construction. The company also offers services such as providing resources for understanding voltage regulators and power conditioners, component rating determinations, and expert consultations in power conditioning and voltage regulation solutions.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Cyber Power Systems USA, Inc |
9.2%
|
| 2 | Power Systems & Controls, Inc |
6.2%
|
| 3 | GENERAL POWER LIMITED, INC |
5.4%
|
| 4 | EREMU, SA |
5.2%
|
| 5 | Foshan Unipower Electronic Co., Ltd. |
5.2%
|
| 6 | MTS Power Products. |
4.4%
|
| 7 | APC |
3.6%
|
| 8 | BK Miami |
3.4%
|
| 9 | Magnetics USA |
3.2%
|
| 10 | DSE® |
3.0%
|
Derivation Method
The ranking is calculated based on the click share within the automatic voltage regulator 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 (%) |
|---|---|---|
|
United States of America
|
8 | 30.8% |
|
China
|
5 | 19.2% |
|
Japan
|
3 | 11.5% |
India
|
2 | 7.7% |
United Kingdom
|
2 | 7.7% |
|
Spain
|
1 | 3.8% |
|
Taiwan
|
1 | 3.8% |
| Nepal | 1 | 3.8% |
| Republic of South Africa | 1 | 3.8% |
Canada
|
1 | 3.8% |
Switzerland
|
1 | 3.8% |
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