UPS Power Inverter and DC to AC

Learn about Power flow, Sags, Dips, Phase rotation, Harmonics, Flicker and more!



Power Quality Teaching Toy

Standards

CBEMA - Computer Business Equipment Manufacturer's Association adopted curve IEEE Standard 446 (orange book) curve. Recommended Practice for Emergency and Standby power systems for Industrial and Commercial Application."

Sine wave Inverter 800VA

 Here are two Sine wave Inverter circuit applications that can be made into an UPS or Uninterrupted Power Supply. These are used in Home, Office and Shops. It provides emergency power when Mains power goes down or browns out.



These also help supply power while switching from Mains Power to In-house Diesel Generation  Power Stations or Integrate with Solar Powered Systems to provide 110 Volts or 220 Volts AC.

DC to AC Pure Sine Wave Inverter

Here are project reports on how to manage the various design needs of a inverter for a power ups. Even Solar Energy systems need inverters to create AC Sine Wave Power Supply from a DC Battery Array.



Creating a Efficient and Inexpensive Inverter - By Jim Doucet, Dan Eggleston, Jeremy Shaw

This report focuses on DC to AC power inverters, which aim to efficiently transform a DC power source to a high voltage AC source, similar to power that would be available at an electrical wall outlet. Inverters are used for many applications, as in situations where low voltage DC sources such as batteries, solar panels or fuel cells must be converted so that devices can run off of AC power.

WARP Speed IGBT - International Rectifier

IGBTs are voltage-controlled power transistors, that have higher current densities than equivalent high-voltage power MOSFETs. (International Rectifier now with Infineon)

WARP Speed IGBT - International Rectifier

Features Include

• 2 to 2.5 times the current density of MOSFETs
• Lower conduction losses at equivalent current rating compared to MOSFETs
• Reduced current tail for high frequency operation
• "Positive-only" gate drive

600V Warp 60-150 kHz Discrete IGBT in a TO-247AC package



Lower switching losses allow more cost-effective operation than power MOSFETs up to 150 kHz ("hard switched" mode)

Of particular benefit to single-ended converters and boost PFC topologies 150W and higher

Low conduction losses and minimal minority-carrier recombination make these an excellent option for resonant mode switching as well (up to >>300 kHz)

The IGBT in TO-247 delivers the same efficiency at full loadas the MOSFET in the larger TO-247 package.

AMETEK Programmable Power

Elgar, Sorensen and Cailifornia Instruments Products. A wide range Electronic Loads are available from 75-1800W with both DC and AC input in benchtop, modular and standalone form factors. Other products are DC Power supplies AC Power Sources, Modular AC/DC Units. Services like Compliance Testing and Custom Products.

AMETEK Programmable Power

SLM Family Electronic Loads - The SLM family includes 11 models of fully programmable, single input AC or DC modular electronic loads. DC models are offered to test power supplies, battery chargers, battery discharge, power supply transient response and integration into ATE systems. AC models are ideal to test low power inverters.



SL series Electronic Loads - Sorensen

The DC models support operation in Constant Current, Constant Voltage, Constant Resistance or Constant Power mode as well as a short simulation. Engineers have ultimate control of current waveforms by using either the analog input or CC dynamic mode. An analog input (single input DC models) allows arbitrary current waveforms up to 20kHz with an external 0-10V signal........

AMETEK Programmable Power, Inc.
9250 Brown Deer Road, San Diego, CA 92121, USA.