News Article
Mitsubishi Electric EV motor drive has built in SiC inverter
The compact silicon carbide device will enable manufacturers to develop EVs offering more passenger space and greater energy efficiency
Mitsubishi Electric Corporation has developed a prototype electric vehicle (EV) motor drive system with a built-in SiC inverter.
The EV motor drive system, one of the smallest of its kind, will enable manufacturers to develop EVs offering more passenger space and greater energy efficiency.
Mitsubishi Electric plans to commercialise its new EV motor system after finalising technologies for motor/inverter cooling, further downsizing and additional efficiency.
The downsized motor drive system is integrated with an all SiC inverter. It achieves further system downsizing (14.1L, 60kW) with smaller motor resulting from improved thermal resistance between motor drive system and cooling system equal to existing EV motors in power and volume, enabling replacement.
With improved motor cooling performance, the device integrates a cooling system for motor and inverter thanks to the cylindrical shape of the power module, accommodating parallel cooling ducts for motor and inverter. Finally, the module ensures stable cooling with a low-power pump.
Global demand for EVs and hybrid EVs (HEVs) has been growing in recent years, reflecting increasingly strict regulations for fuel efficiency and growing public interest in saving energy resources and reducing carbon dioxide emissions.
As EVs and HEVs require relatively large spaces to accommodate their robust battery systems, there is a strong need to reduce the size and weight of motor systems and other equipment to ensure sufficient passenger space.
Pending patents for the technology is number 94 in Japan and 29 abroad.
The EV motor drive system, one of the smallest of its kind, will enable manufacturers to develop EVs offering more passenger space and greater energy efficiency.
Mitsubishi Electric plans to commercialise its new EV motor system after finalising technologies for motor/inverter cooling, further downsizing and additional efficiency.
The downsized motor drive system is integrated with an all SiC inverter. It achieves further system downsizing (14.1L, 60kW) with smaller motor resulting from improved thermal resistance between motor drive system and cooling system equal to existing EV motors in power and volume, enabling replacement.
With improved motor cooling performance, the device integrates a cooling system for motor and inverter thanks to the cylindrical shape of the power module, accommodating parallel cooling ducts for motor and inverter. Finally, the module ensures stable cooling with a low-power pump.
Global demand for EVs and hybrid EVs (HEVs) has been growing in recent years, reflecting increasingly strict regulations for fuel efficiency and growing public interest in saving energy resources and reducing carbon dioxide emissions.
As EVs and HEVs require relatively large spaces to accommodate their robust battery systems, there is a strong need to reduce the size and weight of motor systems and other equipment to ensure sufficient passenger space.
Pending patents for the technology is number 94 in Japan and 29 abroad.
