Repetitive Control of a three Phase UPS with Isolation Transformer: A control method for increasing the performance of UPS under unbalanced and/or nonlinear loads
Repetitive Control of a three Phase UPS with
A repetitive control method for output voltage control of a three phase uninterruptible power supply (UPS) with isolation transformer is investigated. In the method voltage control loop is employed in the stationary dq frame. The controller eliminates the periodic errors on the output voltages due to inverter voltage nonlinearity and load disturbances. The controller design and implementation details are given. The controller is implemented on a 5-kVA UPS prototype which is constructed in laboratory. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considered. The steady-state and dynamic performance of the control method are investigated in detail. The theory of the control strategy is verified by means of simulations and experiments.
- Brand: S Leyman Etinkaya
- ASIN: 3846539082
Tripp Lite OMNI1000ISO 1000VA 700W UPS Battery Back Up Tower Isolation Transformer 120V, 6 Outlets
Tripp Lite OMNI1000ISO 1000VA 700W UPS Battery Back
Manufacturer: Tripp Lite Part: OMNI1000ISO UPC: 037332126931 Category: UPS/Power Devices - UPS Systems - UPS Systems Description: Tripp Lite UPS 1000VA 700W Battery Back Up Tower Isolation Transformer 120V Tripp Lite UPS 1000VA 700W Battery Back Up Tower Isolation Transformer 120V - UPS - AC 120 V - 700 Watt - 1000 VA - USB - output connectors: 6 - attractive blackNotes Ask for quantity pricing. Free Support 773-869-1TD1 or [email protected] Selling Points * 1000VA line-interactive UPS with Faraday-shielded, low-impedance isolation transformer delivers full isolation from potential damage and performance problems * Provides immunity from EMI/RFI line noise in both normal and common modes. Delivers clean signal-reference ground, reducing data errors and audio/video distortion * Automatic voltage regulation (AVR) automatically corrects incoming voltage to keep equipment working through low voltage (brownouts) as low as 81V and overvoltages as high as 143V without consuming battery power * Supports loads up to 1000VA/700W * Half-load runtime of 24 min. (500VA/350W); full load runtime of 8 min. (1000VA/700W) * 5 diagnostic LEDs indicate AC present, on battery, voltage correction status, overload and battery low/replace * Electrostatic discharge (ESD) resistance reduces potent...
- Brand: Tripp Lite
- ASIN: B000GE8RSW
- UPC: 037332126931
APC SURT003 Smart-UPS RT Tower Isolation/Step-Down Transformer
Tripp Lite OMNI750ISO 750VA 500W UPS Battery Back Up Tower Isolation Transformer 120V, 6 Outlets
Tripp Lite OMNI500ISO 500VA 300W UPS Battery Back Up Tower Isolation Transformer 120V, 3 Outlets
Tripp Lite OMNI500ISO 500VA 300W UPS Battery Back
Tripp Lite's OMNI500ISO offers complete UPS protection with built-in line-interactive voltage regulation, intelligent monitoring and unattended shutdown capability. Built-in isolation transformer with faraday shield offers full isolation and complete common mode noise rejection. 500VA power handling capacity supports point-of-sale applications, computers, internetworking equipment and home theater systems during commercial power failures. Line-interactive voltage regulation corrects brownouts as low as 83V back to normal 120V levels, saving battery reserves for use only during complete power failures. Built-in USB communications port works with PowerAlert Software and cabling to provide automatic unattended shutdown of connected network and PC applications.
- Brand: Tripp Lite
- ASIN: B000EA0DGC
- UPC: 037332125125
MW Mean Well LPL-18-12 12V 1.5A 18W Single Output LED Switching Power Supply
MW Mean Well LPL-18-12 12V 1.5A 18W Single
FeaturesLPL- 18: 90~132VAC input onlyLPH-18: 180~264VAC input onlyLPV: 90~264VAC input Fully encapsulated with IP67 levelProtections: Short circuit / Overload / Over voltage / Over temperature (LPH-18/LPL-18 only)Constant voltage modeClass 2 power unit / Pass LPS (LPV-20/35)Isolation class II, no F.G.Withstand 300VAC surge input for 5 seconds (LPV-20/35)Cooling by free air convection100% full load burn-in testLow cost, high reliabilitySuitable for LED-based decorative/architectural lighting, LED stage,theater lighting, and LED electronic displays2 years warrantyThe transaction does not include any Import Tax / Duty / VAT / Brokerage Fees / Handling Fees. For more information about the tax rate, please check with local custom department before purchases. If you reject the package due to any charged tax or duty, we reserve the right to charge ALL shipping cost and 5% (of total price) handling fee. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. We do not responsible for any custom duty or import tax. Please check with your country's customs office to determine what these additional costs will be prior to buying. Sometime customs will inspect the parcel and sometime will not. If you have any speci...
- Color: White
- Brand: MEAN WELL
- ASIN: B00FRBO85K
Mean Well RS-100-15 Enclosed Switching AC-to-DC Power Supply, Single Output, 15V, 0-7A, 105W, 1.5" H x 3.8" W x 6.3" L
OPTI-UPS DS10000BT (DS10BT) Durable Series (10000 VA / 7000 W) On-Line Sinewave Double Conversion Uninterruptible Power Supply, with ISO Transformer, Single Phase ONLINE UPS
OPTI-UPS DS10000BT (DS10BT) Durable Series (10000 VA /
An online ups is not a further improvement of the standby technology, but a completely different approach to providing the highest level of power supply. A double-conversion refers to converting the incoming ac power into dc power, and inverting it back to ac power. This ensures the newly reproduced power to be of a quality standard set by ups, to be completely cleared of all imperfections of the power coming from the ac mains. Regardless of what is going on the ac mains side, the ups output voltage, frequency and signal purity are kept up to the highest standards. The current flow is absolutely uninterruptible, the transfer time is zero. The ups can work in pair with diesel generator, and can accommodate additional battery cabinets for a longer backup time. Beside those, the durable series ups offer a set of essential features that make these ups a flexible power supply control and power saving tool. By now the durable series ups perfectly serve their purpose in numerous data processing, medical, banking and other mission critical centers around the globe.
- Brand: OPTI-UPS
- ASIN: B00N7EZ4MA
- UPC: 766908392325