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Mitsubishi Electric Develops New EV Power Conditioner Technology

Mitsubishi Electric Corporation  has developed new miniaturization and energy-efficient technologies for electric vehicle (EV) power conditioners, which will greatly facilitate the domestic use of the electricity stored in EV batteries.

MitsuThe use of these technologies in the creation of a prototype power conditioner allowed its size to be reduced to approximately one half that of comparable existing models* while achieving approximately 30 percent less power loss.**

 Their compact design will enable the conditioners to be installed in confined spaces such as domestic garages, facilitating their deployment in typical home environments.

The newly developed technology facilitates the domestic consumption of surplus electricity generated by residential photovoltaic (PV) systems as well as offering homes a stable power supply in the event of a blackout. Going forward, Mitsubishi Electric plans to mass-produce small high-efficiency power conditioners for EVs, thereby contributing to the realization of a low-carbon society through the increased use of renewable energy.

Key Features

1)High-speed switching and improved circuitry achieve a size reduction of almost 50 percent: EV power conditioners consist primarily of a DC/DC converter and an inverter that converts DC to AC to allow the charging and discharging of the EV’s batteries. These converters and inverters have inductors for transmitting electricity to EVs and power lines, which account for much of the size of the power conditioners. Inductors play a role in removing high frequency components of the pulse voltage, allowing stable operation of the component systems. The size of the inductor is determined by the period and amplitude of the pulse of the input voltage; it is thus possible to reduce this by reducing the input voltage and shortening its pulse period.

2)High-efficiency control technology reduces power loss: The new technology is capable of highly efficient control of two DC/DC converters with an output of 3kW. When power output is low, the system uses only one of the converters and partially stops the switching of the active converter’s power semiconductor devices. As a result, the power loss of power semiconductor devices at outputs of 1 kW or less can be reduced by approximately 30 percent.

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Nitisha Dubey

I am a Journalist with a post graduate degree in Journalism & Mass Communication. I love reading non-fiction books, exploring different destinations and varieties of cuisines. Biographies and historical movies are few favourites.

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