Wednesday 6 March 2013

Electric Motors for Electric Vehicles | ResearchMoz.us

ResearchMoz.us include new market research report"Electric Motors for Electric Vehicles 2013 - 2023: Forecasts, Technologies, Players" to its huge collection of research reports.

Electric Motors for Electric Vehicles

All Points are covered in table of Content of this Report some of them listed here:

1. EXECUTIVE SUMMARY AND CONCLUSIONS

1.1. Traction motor forecasts of numbers
1.2. Global value market for vehicle traction motors
1.3. Definition and background
1.4. Shape of motors
1.5. Location of motors
1.6. Unique major new survey
2. INTRODUCTION
3. ANALYSIS OF 125 TRACTION MOTOR MANUFACTURERS
4. 212 ELECTRIC VEHICLES AND THEIR MOTORS
5. INTERVIEWS AND NEWLY REPORTED OPINION ON MOTOR TRENDS
6. MARKET FORECASTS


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Small vehicles today

At present, half of the money spent on traction motors for electric vehicles concerns very small vehicles such as mobility scooters and power chairs for the disabled that are so popular in Europe and the USA, mobile robots in the home in Japan and "walkies" meaning pedestrian- operated golf caddies very popular in Japan, stair walkers, motorised lifters, sea scooters that pull the scuba diver and, of course, those hugely popular two wheelers in China with 34 million e-bikes alone sold worldwide in 2011. Add tiny quad bikes, All Terrain Vehicles ATVs, go-karts and golf cars and their derivatives. 92% of electric vehicle traction motors are currently needed for those small vehicles and they are therefore sold substantially on price.

Big vehicles tomorrow

In a huge change in mix in the electric vehicle market and therefore the electric motor market, those small EV motors become a mere 25% of the electric vehicle motor market value in 2022 as the big vehicles, and therefore big motors, become very successful. For example, the value of the market for military electric vehicles increases over 20 times as military forces buy battlefield hybrids rather than just small pure electric runabouts. The bus market value rockets nearly seven times as China, in particular, buys huge numbers of large hybrid versions as part of its national transportation plan. Better reported is the burgeoning electric car market where hybrid versions in particular are behind a nearly six fold growth in market value over the coming decade. All this turns the world of traction
motors on its head.

Different motors needed

The electric motors that are required for the bulk of the market by value are becoming much higher in power and torque. For example, an Autonomous Underwater Vehicle AUV - like a torpedo but making its own decisions - can push 400 kW, a large forklift or bus delivers 250-350 kW per motor but cars typically need up to 70kW per motor with a low-cost electric bicycle merely offering a 0.25 kW motor. At the large end, torque from the traction motor is up to 6000 Nm yet only 0.2 to 0.5 Nm is needed by many two wheelers and mobility vehicles for the disabled. The heavy end is territory where the asynchronous motor is winning now that its performance has improved and the cost of the control electronics has been got under control. For example, the Heavy Industrial category refers to heavy lifting as with forklifts and mobile cranes and here IDTechEx finds that 89% fit asynchronous motors otherwise known as AC induction - brushless traction motors with no permanent magnets. Around 63% of military vehicles and 52% of large buses fit asynchronous motors on our analysis of 212 electric vehicles, past, present and planned. Toyota, world leader in electric vehicles by a big margin, is using asynchronous motors for its forklifts and buses and has now developed them for possible use on its cars, which currently use permanent magnet motors.

Caution needed

Nonetheless, we must be very careful about sweeping generalisations. Many experts believe that asynchronous motors will sweep the board at 5kW power upwards. That is tantamount to saying that they will take over 70% of the traction motor market value because there are even 5kW motors in golf cars and the smallest leisure boats. Although the enthusiasts can point to such motors used today in golf cars variants as one example, it is important to observe the very rapid improvements in synchronous motors including taming the noise and vibration of the switched reluctance synchronous motors that need no expensive magnets. IDTechEx does not accept the conflict as one primarily between those using expensive neodymium magnets and those with allegedly lower inherent costs. In the larger electric vehicles performance matters more than cost and anyway, asynchronous motors use a lot of expensive copper and control circuitry.

Performance matters more

The winners in future traction motor markets will win on performance more than price, this including very different criteria in different vehicles with many problems still to solve. For example, Boeing has a contract to develop an Unmanned Aerial Vehicle UAV that can stay aloft for five years. It has subcontracted Newcastle University in the UK to create a traction motor with several times improvement in power- to-weight ratio in order to make this possible. NASA's dream of small aircraft taking off purely under the power from in-wheel motors may call for new motor designs as will the thunderbolt of power from regenerative braking of landing airliners that then become electric vehicles while on the ground. Fault tolerant motors are needed in other applications and while Chorus Motors has developed an asynchronous one, Protean Electric has announced an equally impressive synchronous one. Reducing or eliminating the need for water cooling is a welcome advance as yet rarely on offer with large motors. Working at the more efficient high voltages of 300-700V means less copper, thinner, more manageable wiring and less power wastage.

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