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Technical Article: The AC Automatic Voltage Regulator

From Utility Systems Technologies, Inc.
 

 

The automatic voltage regulator or AVR, as the name implies, is a device intended to regulate voltage automatically: that is to take a varying voltage level and turn it into a constant voltage level.

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Three phase uninterruptible power supplies (UPS) operate in conjunction with existing electrical systems to provide power conditioning, back-up protection, and distribution for electronic equipment loads that use three-phase power.  Search by Specification | Learn more about Three Phase Uninterruptible Power Supplies (UPS)
Uninterruptible power supplies (UPS) are backup batteries that provide emergency power to electrical systems in case power becomes unavailable. They are connected between a power source (such as an electrical outlet) and the equipment to protect (such as a motor or computer). Search by Specification | Learn more about Uninterruptible Power Supplies (UPS)
Power or line conditioners regulate, filter, and suppress noise in AC power for sensitive computer and other solid state equipment. Search by Specification | Learn more about Power Conditioners
Line conditioners, also known as power conditioners or power line conditioners, are regulators that protect equipment from excessive fluctuations in the utility line, or power system voltage. Learn more about Line Conditioners
Single phase uninterruptible power supplies (UPS) sit between an AC outlet and an electronic device to provide power conditioning, back-up protection, and distribution for electronic equipment loads. They also prevent power disturbances from affecting the performance and life of the electronic device and vital data.  Search by Specification | Learn more about Single Phase Uninterruptible Power Supplies (UPS)
Product Announcements
Utility Systems Technologies, Inc. - Hi-Efficiency, Industrial-Grade Voltage Regulator
The high efficiency model of the Sure-Volt voltage regulator combines the highest available efficiency with the reliability and ease of application of an industrial-grade voltage regulator. Where... (read more)
Utility Systems Technologies, Inc. - Voltage Sag Protection for UV Disinfection
The Sag Fighter provides deep voltage protection for UV disinfection systems, without batteries, moving parts or scheduled maintenance. All solid state and 99% efficient, the Sag Fighter minimizes UV... (read more)
Utility Systems Technologies, Inc. - Whitepaper: Comparing Utility Voltage Regulation
When it comes to voltage regulation for large industrial or commercial applications, some confusion often arises about two different types of automatic voltage regulators (AVR): the medium voltage... (read more)
Utility Systems Technologies, Inc. - Voltage Regulating Transformer for UPS Bypass
Voltage regulating transformers (VRTs) protect sensitive equipment from unregulated utility power when a UPS goes into bypass operation. The bypass conditioner regulates voltage to equipment or bus... (read more)
Utility Systems Technologies, Inc. - Fixing High Voltage-Overvoltage Problems - Paper
Free Whitepaper - Fixing High Voltage - Overvoltage Problems Overly high voltage levels can be detrimental to electrical devices, particularly electronics. However, voltages that are slightly above... (read more)
Utility Systems Technologies, Inc. - Fixing Overvoltage Problems - Whitepaper
Free Whitepaper: Fixing High Voltage - Overvoltage Problems Overvoltage can be detrimental to electrical devices, particularly electronics. But, voltages that are slightly above nominal may improve... (read more)
Utility Systems Technologies, Inc. - Energy Saving Industrial-Grade Voltage Regulator
The energy-saving Mini-EVR voltage regulator is a very green alternative to the CVT or ferroresonant transformer found in many commercial and industrial applications. The Mini-EVR can save 15% to 40%... (read more)
MetricTest - Sorensen SLH Series
Programmable, High Power AC or DC Electronic Loads The Sorensen SLH Series are fully programmable, high power AC or DC electronic loads. The 500V models are for PFC testing, power transformers and... (read more)
Topics of Interest
An AVR takes in a range of voltage levels and automatically outputs a voltage with a much narrower range of voltage levels. For example, a typical automatic voltage regulator for power quality... (Read More)
An AVR is at the heart of devices often called power conditioners or power stabilizers. The typical power conditioner is an automatic voltage regulator combined with one or more other power-quality... (Read More)
Closed loop control with linear regulators. Often the voltage source is "incompatible" with the load. A buffer needs to be placed between the source and load to regulate or control the voltage and/or... (Read More)
The primary differences between power quality and utility applications are the range of input voltage regulation and voltage levels, but there are other, less obvious, differences including the terms... (Read More)
Comparison of indusrial-grade and computer-grade automatic voltage regulators (AVR) in industrial enviroments. Discussion of the limitations and application considerations of both types of AVR. (Read More)
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