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This section provides an overview for auxiliary power supplies as well as their applications and principles. Also, please take a look at the list of 17 auxiliary power supply manufacturers and their company rankings. Here are the top-ranked auxiliary power supply companies as of December, 2024: 1.Wabtec Corporation, 2.INDIA PRIVATE LIMITED, 3.Pratt & Whitney.
Table of Contents
An auxiliary power supply is connected to the power supply unit of a main unit and is a power supply device that is used to supplement the power supply that tends to be in short supply, separately from the main power supply.
For example, if the main power supply of a railroad car is mainly used to drive the car, an auxiliary power supply is used to provide a stable power supply for the air conditioning and lighting in the car. Similarly, power supplies for graphic displays in personal computers are also typical auxiliary power supplies.
Note that an auxiliary power supply is also a power supply that receives power from the same power supply unit as the main unit.
The main application of auxiliary power supplies is to provide a stable supply of power for air conditioning and lighting in railcars, as mentioned above.
High-voltage power (1500V to 2500V) supplied from overhead wires is converted to low-voltage power (440V to 100V) via an auxiliary power supplies unit. This is because most train cars are designed to use 100 VAC for various lighting and indicator lights, 3-phase 440V for air conditioning equipment, and 100 VDC for door opening/closing devices, etc.
Apart from this example, a storage battery-type power supply called a UPS is also an auxiliary power supply in the broad sense of the term, as it is used to protect personal computers and network computers from data loss due to instantaneous power failure in the event of a power company blackout.
There are two main types of auxiliary power supplies for vehicles: MGs (Motor Generators) and SIVs (Stationary Inverters).
The MG, also called an electric generator, has long been used as an auxiliary power supply.
On the other hand, the SIV (Static Inverter) uses IGBTs, which are typical high-power semiconductor devices, in the inverter circuit. There are different types of SIVs, including 3-level, 2-level, and 2-level inverters, as withstand voltage improvements were made according to the IGBTs' development period at the time. SIVs are also known as pulse-width modulation (PWM) control inverters, which can now be supported by small AC filters, contributing greatly to the miniaturization and high efficiency of auxiliary power supplies.
The low-voltage power supply generated by the SIV is an AC power supply. Therefore, the 100 VDC required for control equipment is converted by a rectifier.
*Including some distributors, etc.
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Pratt & Whitney, established in 1925 and headquartered in East Hartford, Connecticut, is a manufacturer that design, manufacture, and service propulsion systems. The company offers a wide range of products, including aircraft engines, auxiliary power units, and small and medium engines. It also offers engine parts and components, ground power units, and merchandise. Its products provide energy and electrical power for aircraft functions while on the ground. The company has achieved ISO 17025 certification in non-destructive Testing. Furthermore, it serves the aerospace and aviation industries.
Thermal Transfer Corporation, established in 1938, based in Duquesne, Pennsylvania, is a supplier and manufacturer of heat exchangers, fired heaters, gas coolers and economizers. The company provides products and engineering solutions to the metal, petrochemical, glass, waste incineration, and environmental industries. In 2017, it was acquired by Wabtec Corporation, a provider of equipment, systems and services for transit and freight rail. The customer service provided includes fabrication and customer-specified designs to given products.
Integrated Power Designs, founded in Wilkes-Barre, PA, in 1985 is a manufacturer of AC-DC & DC-DC power supplies ranging from 25-400 watts. The company's product portfolio includes LED Drivers, Uninterruptible Power Supplies (UPS), Switching Power Supplies, Custom Power Solutions and Energy Storage Solutions. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company has a national distribution network and a customer support center.
Auxiliary Power Systems, Inc. is a Remlap, Alabama-based supplier and installer of various types of Generac generators for residential and industrial applications. The company's range of products includes Home Standby Generators which run on natural gas or liquid propane fuel, Transfer Switches, Business Standby, and Parts & Accessories such as Air Filters, maintenance kits, and hoses for pressure washers. Auxiliary Power Systems, Inc also offers installation services using factory-trained technicians.
Fuji Electric Corp. of America, originally founded in 1970 in the USA, is a distributor of products manufactured by the Fuji Electric Group throughout North America and the Americas. The company provides electric solutions for energy, industrial systems, social systems, power electronics, and electronic devices. Fuji Electric Corp. of America offers a wide range of products, such as inverters, circuit breakers, ring compressors, flow meters, and power generators. The company's systems include applications for passenger door automation systems and turbine power generation systems.
Jiangsu Luokai Electrical and Mechanical Co. Ltd., based in Changzhou City, China, is a manufacturer of high and low-voltage electrical distribution equipment. Its product portfolio includes circuit breaker frames, low-voltage circuit breaker mechanisms, and ring network cabinet operating mechanisms. It also sells accessories such as switches, motors, and electromagnets, mainly serving the domestic accessories industry. The company is listed on the A-share board of the Shanghai Stock Exchange, and some of its customers include Schneider, XJ Electric, and Siemens. It supplies to the domestic market and also exports to other countries like the United States, Italy, and India.
AMETEK Airtechnology Group (AAG), based in Middlesex, United Kingdom, is a manufacturer of several entities, including Muirhead Aerospace Limited, founded in 1894, and The Airscrew Company Ltd, founded in 1923, both acquired by AMETEK, Inc., converging to specialize in motion control and thermal system products. The company's motion control products include alternating current (AC) and direct current (DC) electrical motor gearheads, electro hydrostatic actuators, electrical landing gear actuation systems, and limited angle torque motors. On the other hand, the company’s thermal management products include electrical heaters, sand scavenge fans, gun smoke extraction fans, as well as engine and gearbox cooling fans.
TOYO DENKI SEIZO K.K. founded in 1918 and headquartered in Tokyo, Japan, is a manufacturer that is engaged in three main areas of business that includes transportation systems, industrial systems, and information systems. They provide electrical equipment such as motors, generators, transformers, and control systems. These products cater to various industries including manufacturing, energy, and transportation. Their products are utilized in applications such as industrial machinery, power generation, and transportation systems. The company also answers customer inquiries through postal, mail, and telephone contact.
Staticon Ltd., headquartered in Scarborough, Ontario, is an established manufacturer of industrial/utility station power supply equipment since 1964. The company has been producing Rectifiers, DC UPS Systems, Battery Chargers, Inverters, AC Line Conditioners, AC Transfer Switches, and AC UPS Systems since its inception. With a team of 11 to 50 employees, they provide services to the Appliances, Electrical, and Electronics Manufacturing industries. Their products offer utility-grade power solutions, catering to essential backup, auxiliary, and battery charging needs. Their designs prioritize natural convection cooling, magnetic control, and simple electronics, ensuring durability and ease of field serviceability.
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.
Texas Instruments Incorporated was founded in 1930 and is headquartered in Dallas, Texas. Texas Instruments is a producer of high tech equipment for industrial, automotive, personal electronics, communications equipment industries. Texas Instruments designs, manufactures, and sells semiconductors to electronics designers and manufacturers in the United States and internationally. Texas Instruments operates in two segments: analog and embedded processing. The Analog segment offers power products, including battery-management solutions, DC/DC switching regulators, power switches, linear regulators, voltage references, and lighting products. The Embedded Processing segment offers microcontrollers that are used in fields such as electronic equipment and digital signal processors for mathematical computations.
Toshiba has nearly a century-and-a-half-long history of pioneering the development of electrical equipment in Japan, providing customers with products and services such as energy systems and solutions and infrastructure systems and solutions. With a focus on digital technologies, Toshiba boasts cutting-edge products in semiconductors, barcode printers, and rechargeable Lithium-ion battery cells, modules, and industrial pack series. With arms in business, R & D, AI, sustainability, and digital solutions, Toshiba and its people evolve with the times, ensuring its continuing ability to solve ever-changing social issues through constant change. By utilizing the knowledge that Toshiba has amassed across numerous business domains, along with cutting-edge technologies like IoT, AI, and quantum related technologies, they have created digital solutions that provide our customers with new value and services
Honeywell International Ltd., a global conglomerate headquartered in the United States, is a major technology company providing a wide range of aerospace solutions since 1906. The company's product portfolio encompasses aerospace systems, industrial automation, and connected solutions for homes and buildings. Their solutions can reduce the risk for the plane accidents, designed to aid pilots in safe take-off and landing, Increase flight crew awareness, and pinpoint precise airplane location to aid landings. The advancement of urban air mobility and increase in commercial travel will challenge the modern airspace and their products offer gain visibility and control to keep flights safe.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Wabtec Corporation |
17.2%
|
| 2 | INDIA PRIVATE LIMITED |
12.1%
|
| 3 | Pratt & Whitney |
8.6%
|
| 4 | Fuji Electric Corp. of America |
8.6%
|
| 5 | Staticon Ltd. |
8.6%
|
| 6 | Auxiliary Power Systems, Inc |
6.9%
|
| 7 | AMETEK Airtechnology Group |
6.9%
|
| 8 | Integrated Power Designs |
6.9%
|
| 9 | STMicroelectronics |
5.2%
|
| 10 | Solid State Instruments |
3.4%
|
Derivation Method
The ranking is calculated based on the click share within the auxiliary power supply 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
|
6 | 42.9% |
|
China
|
2 | 14.3% |
|
Japan
|
2 | 14.3% |
|
United Kingdom
|
1 | 7.1% |
|
Canada
|
1 | 7.1% |
India
|
1 | 7.1% |
Belgium
|
1 | 7.1% |
38 products found
38 products
Japan Broadcast Solutions Co., Ltd.
50+ people viewing
Last viewed: 1 day ago
A portable power supply that can provide normal output even under harsh weather conditions such as heavy rain and flood damage. ■IP67 dustproof an...
Japan Broadcast Solutions Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
When you touch the left and right sides of the display, each operation button and connector part lights up, making it easier to operate and connect...
Trinity Energy Co., Ltd.
300+ people viewing
Last viewed: 1 hour ago
Survive the operation status of commercial power, UPS, and battery. A cloud operation monitor that reports in advance of a problem that may lead to...
2 models listed
Keisoku Giken Power Electronics
430+ people viewing
Last viewed: 24 minutes ago
Standard Response
Adopts constant inverter power supply system. Status can be seen at a glance The lineup includes small output capacities ranging from 1.5kVA to 3k...
5 models listed
Keisoku Giken Power Electronics
420+ people viewing
Last viewed: 2 hours ago
Standard Response
Adopts constant inverter power supply system. On-board battery can be replaced/expanded The output voltage can be changed from the front panel dep...
5 models listed
Sanki Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
Standard Response
■Features ・DC side operation ensures a more stable response time than AC side operation. - The AC operated type is pre-wired to the motor input te...
Aztec Co., Ltd.
110+ people viewing
Last viewed: 6 hours ago
Standard Response
The main unit is sold separately.
2 models listed
Aztec Co., Ltd.
70+ people viewing
Last viewed: 18 minutes ago
Standard Response
The main unit is sold separately.
Aztec Co., Ltd.
130+ people viewing
Last viewed: 6 hours ago
Standard Response
■Summary ・Powered by 18V batteries x 4, comfortable for long hours of work ・Light weight: approx. 600g
4 models listed
Aztec Co., Ltd.
70+ people viewing
Last viewed: 6 hours ago
Standard Response
■Summary ・Supports 9.6V to 18V slide battery - Plug-in batteries (nickel-cadmium, nickel-metal hydride batteries) can be charged using the interch...
Hokuetsu Co., Ltd.
50+ people viewing
Last viewed: 18 minutes ago
This is a device that steps down (transforms) three-phase 200V (strictly speaking, single-phase 200V is OK) electricity by half. It is mainly sold ...
Nihon Kiki Co., Ltd.
100+ people viewing
Last viewed: 18 minutes ago
■Summary portable auxiliary power supply *This product cannot be used alone. A separately sold portable power supply is required.
3 models listed
Energy With Co., Ltd.
30+ people viewing
Last viewed: 51 minutes ago
■Summary In the event of a power failure such as an unexpected power outage or instantaneous voltage drop, it protects important equipment and data...
Energy With Co., Ltd.
50+ people viewing
Last viewed: 57 minutes ago
■Summary Supports backup power supplies for OA, FA, SA, etc., and power supply troubles such as instantaneous voltage drops and power outages. For ...
Energy With Co., Ltd.
50+ people viewing
Last viewed: 2 hours ago
■Summary Supports backup power supplies for OA, FA, SA, etc., and power supply troubles such as instantaneous voltage drops and power outages. For ...
Energy With Co., Ltd.
40+ people viewing
Last viewed: 57 minutes ago
■Summary Supports backup power supplies for OA, FA, SA, etc., and power supply troubles such as instantaneous voltage drops and power outages. For ...
Kiramec Co., Ltd.
60+ people viewing
Last viewed: 6 hours ago
Use this when the security product behaves unstablely (suddenly starts beeping, cannot be turned off, etc.). Effective for vehicles that experience...
Energy With Co., Ltd.
30+ people viewing
Last viewed: 58 minutes ago
■Summary Supports backup power supplies for OA, FA, SA, etc., and power supply troubles such as instantaneous voltage drops and power outages. For ...
Energy With Co., Ltd.
50+ people viewing
Last viewed: 57 minutes ago
■Summary Supports backup power supplies for OA, FA, SA, etc., and power supply troubles such as instantaneous voltage drops and power outages. For ...
Odori Electronics Co., Ltd.
80+ people viewing
Last viewed: 9 hours ago
This is a DC power supply device with DC12V-4A output that supports battery backup. Built-in battery provides 30 minutes of backup in case of power...
ZIEHL-ABEGG SE
40+ people viewing
■Summary ZIEHL-ABEGG empty housings are available in various specifications as accessories for ZIEHL-ABEGG control technology system components. Em...
ZIEHL-ABEGG SE
60+ people viewing
Last viewed: 1 day ago
■Summary In a typical elevator system, unused energy is converted to waste heat by a brake resistor. From an environmental perspective, this will l...
Shoei Electronics Industry Co., Ltd.
30+ people viewing
Last viewed: 18 hours ago
Electrically operated voltage regulator/sliding type voltage regulator
