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ROHM Semiconductor Propels India’s Energy Race, Unveils ‘Made for India’ power saving BLDC Motor solution

ROHM Semiconductors India

ROHM Semiconductor India introduces designed in India, designed for India path breaking solutions for driving BLDC motors in India. The new roll outs are touted to be cost-effective AC Induction motors which are easy to control and 50% more efficient making it ideal for reducing power consumption in Home Appliances and Industrial equipment.

Designed with features to simplify design time and enable faster time to market, the new drivers along with the easily customizable reference designs is sought to propel local design, which is the key to manufacturing locally.

Backing India’s growing electricity consumptions and Govt’s rural electrification initiative, the company asserts to abridge demand vs power generation & supply through its conservation using energy efficient appliances. Additionally, Government’s various initiatives is starting to focus on energy conservation by propagating use of energy efficient BLDC ceiling fans, CFL & LED bulbs as opposed to conventional fans using AC induction motor and filament bulbs.

ROHM shared a report citing that in 2015, India manufactured around 40 Million ceiling fans, with around 10% growth year-on-year. If every single ceiling fan manufactured from here on is made into an energy efficient BLDC ceiling fan, rough calculation indicates that, by 2025, the country can reduce peak-power capacity addition by around 10 GW, which is equivalent to saving around 5 midsized power plants.

Further describing on the power-efficient alignment, Daisuke Nakamura, Managing Director, ROHM Semiconductor India said, “With the government’s initiative towards BLDC ceiling fans, we see that all the ceiling fan manufacturers are trying to create a solution that is both efficient and cost effective. This technology transition has presented an opportunity for new entrants too. Most of the ceiling fan companies have R&D or design capability for the electrical motors, but not so much R&D for the electronics design, which eventually contributes to efficiency and energy conservation. This is where ROHM India has come in, by providing a wide range of reference solutions that will match most of the customers and market requirements.”

Features of ROHM BLDC motor solution

The solution is made up of 3 major blocks –

(1) The Power Factor Controller (PFC),

(2) The BLDC controller and

(3) The control block.

The Power Factor Control block, besides converting the AC source into DC, also corrects the Power Factor (PF). This block also provides an auxiliary power supply to the microcontroller.

The BLDC controller block drives the BLDC motor; the supply voltage for this block is from the PFC block, and the control signals are from the microcontroller.

High voltage also equates to high efficiency as the losses in the power stage is reduced due to the lower operating currents. This is achieved by precise electronic switching of the currents to the windings. Keeping in mind the Indian market conditions, the solution has also been designed to withstand the harshest of the voltage fluctuations seen every day.

Key applications for the solutions include: Ceiling Fan, Air Conditioner, Air Cooler, Air Purifiers.

Impact on Ceiling fan manufacturing – Make in India

“Make in India” is a key Initiative that can give some respite to the ever growing trade deficit. The deficit will reach 200 billion USD by 2025. India being the world’s largest manufacturing base for the ceiling fan can use this technology transition as an opportunity to stimulate the electronics manufacturing industry. In the BLDC ceiling fan, the electronic components will cost about one–third of the total fan cost. Also, the Indian ceiling fan manufacturers can assemble the electronics board by themselves or engage EMS companies. Either way, the BLDC motor solution will have a positive impact on the ESDM industry in India.

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