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Electric vehicles use electronics for more that motor contro

time:2016-06-02 source:未知 click: second
Electric vehicles are being designed with two motors per car not one now and that means many more motor controllers. Each vehicle has a charger and a battery management system on board, both using power electronics.
But according to Dr Peter Harrop, chairman, IDTechEx, that alone is insufficient to create the projected $300bn plus market for electronics in e-vehicles.
The fact is that the other parts of the car are turning to electronics.
“For example, the suspension will no longer be mechanical but electrical active suspension generating electricity and using it, in part to manage itself, giving a far better ride and fuel economy,” said Harrop.
Another area of change are the wheels. “These may become electrical, generating electricity and hybrids may have thermoelectrics on exhaust systems and turbines in them both generating useful kilowatt level power that needs managing,” said Harrop.
Powertrains for electric vehicles land, water and air are evolving rapidly,  says Harrop, and by far the biggest market will be for vehicles on land, particularly on-road and mainly cars followed by buses.
Harrop has written a report which shows the current situation, conventional vehicles with start-stop being inadequate to meet impending 2025 and 2030 emissions legislation.
“Next comes 48V mild hybrids that are modifications keeping conventional powertrains legal for C (subcompact) size cars and above and possibly with some application to B size cars. Initial forms do not have pure electric modes but they will later have pure electric modes thanks to integrated starter generators and more sophisticated power electronics to control them,” said Harrop.
The report from IDTechEx Research, Power Electronics for Electric Vehicles 2016-2026, also looks at the size of the window of opportunity for SiC and GaN power components, GaAs and CIGS photovoltaics, 48V mild hybrids and the trends to 48V without 12V.