Renewable ENERGY

Lets all switch to Renewable

Posted by Micky Oppenheimer
January - 20 - 2010

Electric-cars can use AC or DC type motors:

The DC motor, then it may run on anything from 96 to 191 volts. Many of the DC motors used in electric cars come from the electric forklift industry.

The AC motor,probably is a three-phase AC motor running at 240 volts AC with a 300 volt battery pack.

DC installations will be simpler and less expensive. A typical motor will be in the 20.000-watt to 30.000-watt range. A typical controller will be in the 40.000-watt to 60,000-watt range (for example, a 96-volt controller will deliver a max of 400 or 600 amps). DC motors have nice feature that you can overdrive them (up to a factor of 10-to-1) for short periods of time. That is, a 20.000-watt motor will accept 100.000 watts for a short period of time and deliver 5 times its rated horsepower. This is great for short bursts of acceleration. The only limitation is heat in the motor, too much overdriving and the motor heats up to the point where it self-destructs.

AC installations allow the use of almost any industrial three-phase AC motor, and that can make finding a motor with a specific size, shape or power rating easier. AC motors and controllers often have a regen feature. During braking, the motor turns into a generator and delivers power back to the batteries.

Right now, the weak link in any electric car is the batteries. There are at least six significant problems with current lead-acid battery technology:

They are heavy (a typical lead-acid accumulator weighs 1.000 pounds or more).

They are bulky (the car we are examining here has 50 lead-acid batteries, each measuring roughly 6″ x 8″ by 6″).

They have a limited capacity (a typical lead-acid battery pack might hold 12 to 15 kilowatt-hours of electricity, giving a car a range of only 50 miles).

They are slow to charge (typical recharge times for a lead-acid pack range between four to 10 hours for full charge, depending on the battery technology and the charger).

They have a short life (three to four years, perhaps 250 full charge/discharge cycles).

They are expensive (approximately $2.000 for the battery pack shown in the sample car).

Posted by Emilio Luckyrunner
January - 11 - 2010

There’s a revolution being tested in Europe right now, one that promises to change not only the roads, but also our relationship with our personal gadgets. Bolzano-based entrepreneur Valentin Runggaldier’s new roadside charging station is a solar-powered juice bar for everything from electric cars to Segways to iPods.

Solar station

Solar station

The prototype station is equipped with mono-crystalline photovoltaic panels and can power up to eight vehicles at once. Once the kinks are ironed out, you can expect to see these stations sprouting up throughout Europe and hopefully North America.

There’s a revolution being tested in Europe right now, one that promises to change not only the roads, but also our relationship with our personal gadgets. Bolzano-based entrepreneur Valentin Runggaldier’s new roadside charging station is a solar-powered juice bar for everything from electric cars to Segways to iPods. The prototype station is equipped with mono-crystalline photovoltaic panels and can power up to eight vehicles at once. Once the kinks are ironed out, you can expect to see these stations sprouting up throughout Europe and hopefully North America.
Posted by Emilio Luckyrunner
January - 11 - 2010

LAGOS, Portugal — It’s a hot summer weekend and the parking lots around Lagos marina are filling quickly with the BMWs, Range Rovers and Porsche SUVs of the Portuguese yachting set.

The scene is repeated across the sun-splashed Algarve coast, but a new government plan could make the gas-guzzling race to the south coast a thing of the past.

Prime Minister Jose Socrates is seeking to make Portugal a European trendsetter in green transport. In June, he launched groundbreaking plans for a nationwide network of recharging stations that would allow battery driven electric automobiles to cruise the highways.

Battery Chargin Station

Battery Chargin Station

By 2011, Socrates’ Socialist administration wants 1,300 stations around the country where environment-friendly motorists can plug-in their electric cars as part of a drive to “liberate Portugal from its dependency on foreign oil.”

The first station in the Mobi-E network opened in Lisbon on July 23. A hundred are due to be up and running by the end of this year and 320 should be in place in 2010. In the meantime Renault-Nissan says that Portugal will be one of the first markets for the launch of its electric vehicles in 2011.

The charging network is part of a wider Portuguese plan to switch to green energy that involves investments in wind-turbines, solar panels and wave farms. The plan takes advantage of the country”””””””’’s location on Europe’s sunny, but breezy, southwest tip.

Socrates’ motives are not purely ecological. Portugal has no domestic coal, natural gas or oil and has been forced to import most of its energy. By investing in renewables, Western Europe’s poorest nation is seeking to find cheaper energy alternatives for itself and to create a niche as an exporter of green technology.

Portugal already produces over one-third of its electricity from renewable sources, double the average of the 27 European Union nations. Socrates says the proportion will rise to 45 percent by 2010.

Near the southern town of Moura, Portugal has built one of the world’s biggest photovoltaic power stations. The world’s first commercial wave farm began producing electricity from the coast of northern Portugal last year. Hill tops and cliffs around the nation are covered by giant wind turbines, many operated by the power company EDP, Portugal”””””””’’s lead electricity supplier that has emerged as a world leader in wind technology.

Portugal is a global leader in renewable energy. The next step is to make Portugal a pioneer in zero emission mobility,”

Socrates said announcing the decision to create a web of recharging sites in gas stations, shopping malls, hotels, airports and parking lots.

Socrates hopes the state investment will encourage vehicle manufacturers to locate new production facilities in his country, which has been hit hard by the global recession.

On July 20, Renault-Nissan announced it will build a new 250 million euro ($355 million) plant in Portugal to produce 60,000 lithium-ion batteries a year for electric cars.

The Franco-Japanese alliance has also agreed to make Portugal one of a number of pilot markets for the roll out of electric cars over the next few years, along with Denmark and Israel. The first vehicles should be on the Portuguese market within the next two years.

Although the early Renault-Nissan models will be made in France and Japan, Portugal is hoping the battery plant and recharging network will be stepping stones to a much greater investment in car manufacturing in Portugal.

The cooperation between Portugal and Renault-Nissan aims to overcome the chicken-and-egg dilemma that has long dogged electric car projects.

Manufacturers have been reluctant to invest in mass production of battery-powered vehicles without guarantees that customers will have a recharging network. At the same time, governments and power companies have been wary of investing in the networks when the cars are not on the market.

To kick start the battery car market, the Portuguese government says it will give the first 5,000 buyers a 5,000 euro ($7,100) reduction on the price of their battery-powered car, plus tax breaks for companies that turn to electric for their fleets. Setting an example, the authorities say 20 percent of all new public vehicles will be battery-run by 2011.

The first phase of the government’s plan will set up recharging sites in 21 cities. Customers are expected to be offered a range of charging options from a cheaper six- to eight-hour recharge, to an express deal lasting less than 30 minutes. Drivers will be able to pay using a pre-paid charge card. No announcements have been made about the price of recharging.

The first generation of mass-produced electric vehicles are expected to have a range of 160 kilometers (100 miles) before needing a recharge, meaning they are more suited to urban driving than long-distance trips.

However, according to government estimates, Portugal could have 180,000 electric autos on the roads by 2020. The network of recharging stations could have expanded to 25,000 by then, it says. EDP, a partners in the project, estimates the recharging market could be worth up to 2 billion euros ($2.8 billion) by then.

Posted by Emilio Luckyrunner
January - 2 - 2010

THE ANNUAL Global Green Car Challenge is shaping up to be a good one this year. Scheduled to begin in Darwin on October 24 and finish 3000km away in Adelaide on October 31, this year’s event will see environmentally-friendly production cars battling for the title of “most eco-friendly” alongside the usual experimental solar-powered.

Global Green Car Challenge

Global Green Car Challenge

Originally a solar-only competition, the Green Car Challenge now allows mainstream road cars to enter and demonstrate their real-world fuel economy on actual Australian roads, rather than an ADR-mandated test cycle.

Production cars that conform to the ADR81/01 rating are eligible to compete, and so far Holden, Ford, Hyundai, Audi, Mercedes-Benz, BMW, Volvo, Suzuki and Toyota have registered their interest in entering the challenge.

The specific models that each manufacturer intends to enter remain secret for now, but expect to see a lot of diesels (particularly from the Europeans) and Toyota’s all-new Prius hybrid lining up on the grid. Holden will likely bring an AFM-equipped Commodore to the party, but a diesel Cruze may be just as likely.

Global Green Car Challenge

Global Green Car Challenge

The test route is mostly highway, although the production car-based Eco Challenge category also features an urban cycle that will take place on the streets of Adelaide.

Cars will have their fuel consumptioin precisely monitored throughout the event, and the vehicle that records the greatest improvement over the manufacturer’s claimed fuel economy figure will be declared the winner. With many consumers constantly looking for the most frugal car for their money, the 2009 Global Green Car Challenge will certainly be one to watch.

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