Category | Power Quality

EMC for Renewable Energy

Posted on 27 May 2013

      The use of renewable energy is growing worldwide. Higher numbers of ever more complex systems and installations are leading to a growing need for EMC solutions – especially for new high-power converters. EPCOS components ensure that wind power plants do not introduce interference into the grid. By Ronald Seeger, TDK The rotors, [...]

Energy Measurement and Security for the Smart Grid - Too Long Overlooked

Posted on 04 April 2013

      As smart meter rollouts continue globally, consumers, design engineers, utilities discuss how the smart grid will transform the entire energy industry. Smart meters already allow utilities to save money by accessing meter data without sending someone to physically read the meter. Utilities, factories, and consumers are now pushing for more conservation and [...]

Reactive or Resistive: Optimizing Testing for Offshore Power Generation Supplies

Posted on 04 April 2013

      Offshore independent power generation installations often involve complex systems comprising gas turbines, diesel generators, DC battery and UPS arrangements, which support platforms, rigs and floating production, storage and offloading (FPSO) vessels many hundreds of miles offshore. Ensuring the availability of power for production, life support systems and in some cases propulsion is [...]

Simplifying Safety Certification for New Appliance Designs

Posted on 24 January 2013

      IEC safety standards for electrical appliances permit system self testing, which can help save the cost of implementing sensors to detect abnormal operation. Software and firmware-based safety functions provided by microcontroller or system-on-chip vendors can further simplify the designer’s task By Alberto Guerra, VP Strategic Marketing Development and Ali Husain, System Design [...]

Repetitive Learning Harmonic Current Control in a Load Emulation System

Posted on 15 August 2012

    In an active energy feedback unit of an electronic load emulation system harmonics in the grid currents are compensated by using a repetitive control algorithm By Michael Hausmann, Dominik Dorner, Dr. Norbert Graß and Dr. Bernhard Wagner, Georg Simon Ohm University of Applied Sciences Nuremberg, Germany   Introduction For power electronics development the [...]

More Reliability by High Integration

Posted on 02 August 2012

    The advantages of integrated filter technology Today, power quality (PQ) filters are critical components in modern power conversion applications. PQ filters are used in traditional motor drives and increasingly in renewable energy applications. These applications often need power converters to adjust the power demand and convert different energy sources for use in existing [...]

Intelligent Interleaving: Advanced PFC Controller for High Efficiency AC-DC Power Supplies

Posted on 23 July 2012

      The required external circuitry is reduced from a two-pole filter to a simple resistive divider The FAN9612 Interleaved Dual Boundary Conduction Mode (BCM) Power Factor Correction (PFC) controller introduces several innovative, distinguishing functions aimed at maximizing efficiency, reducing external components and offering a robust set of protection features. By Steve Mappus, Systems [...]

New Tool Easily Navigates the Efficiency Standards Landscape

Posted on 17 July 2012

      Platform to use Worldwide Energy-Efficiency Specs and Standards Since discovering that approximately 10% of the electricity generated for residential use is being wasted by devices that are turned off but actually continue consuming power, government agencies have been developing programs to improve the efficiency of Energy-using Products (EuPs). This focus on reduced [...]

An Innovative, Simple, Green PFC Solution

Posted on 29 June 2012

      Reliable, low component count, low-cost solution Switch-mode power supplies are now used in almost all electronic systems due to their good line and load regulation, high conversion efficiency, and compact size. Unfortunately, switching power supplies are nonlinear components and can generate narrow, high amplitude pulses out of phase with the line voltage. [...]

Keeping the Electricity flowing in Southern Africa

Posted on 01 November 2008

      Electrical engineering companies like ABB and General Electric use Bergoz current and charge measuring instruments in their corporate research labs and in field applications, measuring partial discharge in power cables, corona, insulation breakdown and monitoring and locating high voltage power line faults. By David Baddeley, Bergoz Instrumentation   Bergoz Instrumentation, located in [...]