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Machine builders are constantly looking for ways to improve their machines while reducing costs and complexity. The new Allen-Bradley PowerFlex 527 ac drive from Rockwell Automation claims it can help them achieve those goals. The PowerFlex 527 drive is the first ac drive designed to work exclusively with a Logix-based programmable automation controller (PAC). The drive leverages the benefits of the controller capabilities and uses a single software package ~ Rockwell Software Studio 5000 Logix Designer ~ to help simplify machine development and operation. The PowerFlex 527 drive is an ideal complement to machines using Allen-Bradley CompactLogix, ControlLogix or GuardLogix PACs and Allen-Bradley Kinetix servo drives. The PowerFlex 527 drive uses embedded instructions shared with Kinetix servo drives, providing the same user experience for configuration, programming and control of both types of drives, helping save valuable engineering time. It also offers a low-cost solution for machine applications ~ such as pumps, fans, and in-feed and out-feed conveyors ~ that need simple speed control for induction motors. The servo drive handles the more precise motor control operations involving speed, torque and position control. ““Until now, most machine builders have never considered programming their variable frequency drives like they program their servo drives ~ but they immediately understand the value,” said Andrew Hoch, product manager for variable frequency drives, Rockwell Automation. “We developed this drive to help remove some of the design complexity, provide the best-fit performance level and deliver the next evolution of our premier integration.”


Comparison of PWM snd SVM based active filters
By S. Sherine, A.P, EEE Department, Bharath University
Abstract ~ The aim of this project is to simulate VSI and CSI based active power filters to Non-linear load for improving power quality. THD is used as measuring index for comparing performances of these filters. These filters can reduce harmonic in supply current. View here
Utility requirements document for small modular reactors
The Utility Requirements Document is a declaration of owner/operator requirements for new nuclear plants, large or small. More than 1200 specific changes were made in the revision to accommodate SMR designs, ranging from emergency planning and human factors design to detailed technical modifications associated with safety systems and building arrangement. Notably, the EPRI Utility Requirements Document can be used throughout a nuclear power plant project’s lifetime ~ before, during, and after technology selection ~ to support successful project execution. View here
This giant straw is actually a vertical bladeless wind turbine Solar Panels Could Increase Endurance for Robotic Systems
The pouring of concrete for the base mat of the reactor building of Fuqing 5, China’s first Hualong One unit, has been completed, China National Nuclear Corporation (CNNC) announced today (May 12, 2015). The company began pouring first concrete for the unit in the morning of 7 May, marking the official start of construction of the unit, the first of two Hualong One units planned for the Fuqing plant in China's Fujian province. It announced today that the operation was successfully completed at 8.08 pm on 9 May, with some 9147 cubic metres of concrete having been poured. The foundation of the reactor building has a diameter of 56 metres and is over 4.5 metres deep. Some 1700 tonnes of steel rebar has been used in it. — World Nuclear News
Latest Articles
It is just not working for anyone
On: 23-05-2015 Topic: General

The low price of carbon is an indication that the market does not believe European Union politicians will take the necessary measures to fix the carbon market, the chief executive of German utility RWE said on Wednesday.

EU diplomats last week approved a proposal to begin reforming the world’s biggest carbon market in 2019, with a view to begin removing some of the huge surplus of carbon allowances that has depressed prices on the EU’s Emissions Trading System (ETS).

The plan needs to be signed off by EU environment ministers in June and voted on by the European Parliament in July but carbon prices are not anticipating a major impact from the plan and have remained stubbornly low at around &euros;7.4 a tonne.

“We started with the ETS 10 year ago but we are not getting our act together,” RWE’s Peter Terium (pictured) said at the Business and Climate Summit in Paris.

Terium, who said his company is Europe’s largest CO2 emitter with 165m tonnes of emissions a year, said the EU is not getting alignment on solving the ETS issue.

“The market does not believe it is going to happen because CO2 prices are still at an all-time low,” he said.

He added this is a signal the market does not think politicians are able to get the number of carbon certificates to be put up for auction in line with the need to get a sensible carbon price.

Terium said RWE aims to reduce its emissions by 25% by 2020 compared with their level in 2005.

“Over a period of 15 years 25% might not sound like a lot, but on a volume of 165m tonnes of CO2 it will eventually make a difference,” he said.

Terium estimated RWE might be the world’s second-biggest CO2 emitter. “That is not something to be proud of; the question is what do you do to change this,” he said.

He said if RWE were to shut its lignite and coal-fired power plants, the company would go bankrupt, lights would go out in Germany and Europe and electricity prices would double or triple for chemical, steel and other companies.

He said RWE was investing heavily in reducing its CO2 emissions and in renewable energy and was developing new utility industry business models and smart grids that help consumers connect their solar panels to the power networks. — By Geert De Clercq.

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Latest Articles
It is just not working for anyone

The low price of carbon is an indication that the market does not believe European Union politicians will take the necessary measures to fix the carbon market, the chief executive of German utility RWE said on Wednesday.

E Read More..

SA learns about 'truck' reactors

A new breed of small nuclear reactors about one-eighth the size of the coal-burning Hazelwood power station in Victoria’s Latrobe Valley are increasingly popular in the northern hemisphere and might be a good option for Australia if a nuclear industry is set up.

Read More..

Only licence holders need apply

NSW will impose more regulation on the sale of its electricity businesses, requiring whoever buys them to hold a licence that can be revoked.

The licence will require buyers to have a continuing, substantial presence in Australia, a condition apparently d Read More..

Out of the frying pan?

The EU has reached a draft compromise on a market stability mechanism to help prop up prices on its carbon market.

EU negotiators have struck a draft compromise on the launch date and operation of the 28-nation bloc’s planned “carbon market st Read More..

Africa's first wave power comes ashore

The first phase of power generation using energy from the sea waves in the country will begin next Wednesday.

The initial generation will be 14MW of power that will increase gradually until it reaches the intended 1000MW by December.

Ins Read More..

Renewables fizzles out as government policy squirms

New investment in Australian renewable energy projects has fallen 90 per cent in the past 12 months, with the nation’s sector deemed “uninvestable” because of uncertainty around government policy.

The latest update from Bloomberg New Energy Finance shows Read More..


China plans to spend $100 billion on long-distance ultrahigh-voltage lines.

China’s State Grid Corp. wants to learn at home and then quickly export its b Read More..


Despite huge potential in the country, wind energy has faced rough weather in recent years.

During the last two years the wind energy deployment declined from 3000MW to 1500MW (1.5 GW) annually.

Experts are unanimous the wind sector can Read More..



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►IRELAND: They do things differently in the emerald isles. ► AUSTRALIA: PM defends coal for power at coal mine opening. ► AUSTRALIA: Premier displeased with Macca's interpretation on poles sell-off. ► USA: Drones take over line inspections. ► CHINA: China looks towards space for pollution relief. ► CHINA: After 15 months respite, nuke building starts again. ► GERMANY: E.ON turns off the tap. CANADA: Hydro spend big to keep the lights on. ► CANADA: Taxing windfarms. ► CHINA: Chinese plant closer to fruition. ► USA: The plunge into darkness! ► USA: PG&E cleans up with solar. ► PAKISTAN: Electricity prices threaten government. ► AUSTRALIA: Seal for rods and rams. ► CANADA: Financial closure on Nordsee. ► RUSSIA: $2.5trln investment needed. ► FRANCE: Geeing up the troops. ► AUSTRALIA: East and West tie the bow. ► JAPAN: 100 orders from US. ► USA: Insulating oil under the microscope. ► CANADA: Adding a bit of salt to the mix.
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Great Plains Energy has announced first quarter 2015 earnings of $18.5m or 12¢ a share compared with first quarter 2014 earnings of $23.4m or 15¢ a share. MGE Energy, Inc. has registered earnings for the three months ended March 31, 2015, of $18.3m, or 53¢ a share, compared to $27.7m, or 80 cents per sha¢, for the same period last year. -Allete, Inc. has clocked in a first quarter 2015 earnings of 85¢ a share on net income of $39.9m and operating revenue of $320.0m, compared to 80¢ and $33.5m and operating revenue of $296.5m. Full reports in our “personal edition”.

The California Public Utilities Commission could soon ask Southern California Edison and other utility companies to start designing “time-of-use” residential electricity rates, to take effect in 2019. The rates would make electricity more expensive when demand is high, and less expensive when demand is low. Some ratepayer advocates and environmental groups support time-varying rates, which they say would help reduce dependence on climate-altering fossil fuels. But at least one consumer watchdog group is worried the rates would have unintended consequences. For instance, the new rates could make electricity much more expensive during the summer, hitting desert residents hard during the many months of air conditioning season. It’s no secret that the cost of providing electricity changes depending on the time of day, and the time of year. For Edison and other utilities, powering the state’s homes and business is more expensive when overall energy demand is high, in part because they’re forced to buy electricity from expensive “peaker” power plants that wouldn’t otherwise be needed. Demand tends to peak in the afternoon and evenings and on hot summer days.

Southern Company subsidiary Southern Power has b boughtr the 103MW Butler solar facility from Community Energy, Inc., in Georgia. This bring the company's renewable energy capacity to 1100MW of gen eration capacity with 16 solar, wind and biomass projects.The project, which was initially developed by Community Energy, Inc., was selected by Southern Company subsidiary Georgia Power in a competitive process through the nationally recognized Georgia Power Advanced Solar Initiative. The facility, which will be located on about 1070 acres in Taylor County, Georgia, is expected to enter commercial operation in the fourth quarter of 2016. Construction is slated to begin in September 2015, with First Solar, Inc., managing the building, operations and maintenance of the facility. It is expected to consist of more than 1m of First Solar's thin-film photovoltaic solar modules mounted on single-axis tracking tables. The electricity and associated renewable energy credits (RECs) generated by the facility will be sold under a 30-year power purchase agreement with Georgia Power, which will have the option to keep or sell the RECs, for the benefit of its customers or renewable energy programs.