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Technical Article: Double Conversion Electronic Voltage Regulator Operation
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From Utility Systems Technologies, Inc.
The double conversion electronic voltage regulator differs significantly in operation from the tap switching type EVR. The double conversion EVR uses a rectifier to convert AC power to DC and then uses an inverter to convert the DC power back to AC. Voltage regulation is obtained in one of two ways: 1) by regulating the DC voltage output from the rectifier, or 2) by supplying the inverter with a constant DC voltage and adjusting the voltage level during the conversion back to AC in the inverter. Method 1) can result in the lowest cost of components, and method 2) is most commonly used by uninterruptible power supplies (UPS). A UPS without batteries can be used as a voltage regulator, however it often provides less voltage regulating capability and higher cost than a true double conversion or tap switching electronic voltage regulator. Products & Services
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.
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Learn more about Three Phase Uninterruptible Power Supplies (UPS)
Power or line conditioners regulate, filter, and suppress noise in AC power for sensitive computer and other solid state equipment.
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Learn more about Power 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.
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Learn more about Single Phase Uninterruptible Power Supplies (UPS)
Voltage regulators are power converters that provide voltage control capabilities. They accept a voltage that varies over a given range and generate an output voltage that does not vary.
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Learn more about Voltage Regulators
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Topics of Interest
The EVR is the modern standard for voltage regulation in most power quality applications. While an EVR will be about 25% higher in cost than a comparable mechanical voltage regulator, the difference...
(Read More)
On-line or double-conversion uninterruptible power supplies (UPS) use a constantly-operating power converter whose power source consists of a battery and battery charger that are connected in...
(Read More)
Electronic voltage regulators are typically designed for indoor, low voltage applications and are air-cooled (i.e. using dry-type transformers instead of oil-filled). Other characteristics of tap...
(Read More)
The full on-line system shown in Fig. 5.1, now also referred to as a double
conversion module, is better illustrated in Fig. 5.13. Under normal
operation, that is, mains supply is present, the...
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The typical electronic tap switching voltage regulator works very much like the mechanical tap switching regulator - except that it replaces mechanical servo drives and brushes with solid-state...
(Read More)
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