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Archive for July 27, 2010

Unique solution required for grid-tie inverters in India!


According to Venkat Rajaraman, CEO, Su-Kam Power Systems, there is a need for a unique solution for grid-tie inverters in India. The reason being: the grid itself is unstable, and isn’t available most of the time. Also, it does not comply yet, to any of the known specifications.

He was speaking during a workshop on solar inverters, organized by the India Semiconductor Association (ISA) on 23 July, 2010, in Kolkata, India.

Challenges and opportunities for solar inverters in India
Rajaraman listed some other challenges as well facing the Indian solar inverter industry. These include a need for solar charge controllers that can take advantage of the existing inverters/HUPS that are already installed for off-grid applications. Also, there is a reqirement of low-cost, high-efficiency charge controllers (MPPTs) that can work with a variety of batteries.

Further, the inverters (solar/otherwise) are still designed with chips designed for motor control application. There is a need for inverter specific solution input PFC, battery monitoring/algorithms, charge current/mains sense, power device drivers, etc).

As and when these challenges be met, which should happen, hopefully, in the long run, the Indian opportunity is immense! For instance, the goal of the Jawaharlal Nehru National Solar Mission (JN-NSM) is already well known — to set up a capacity of solar power generation of 20,000 MW by 2022 in India.

Solar should be seen as a long term solution to solving India’s power deficit situation. The total capital outlay at today’s prices for adding 20,000MW capacity is estimated at Rs. 4 lakh crores ($90 billion)! Further, the share of electronics (balance of system) alone will likely be Rs 80,000 crores ($20 billion). Read more…

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