Power Conditioner Technology for Photovoltaic Generation and Power Storage
The kind of renewable energy found in solar generation has a peculiar flaw in
that its output is affected by weather conditions. Combining it with "power storage
technology" which can stockpile the power generated for when it is needed makes
it possible to realize a stable power supply system. Power storage technology
is also receiving attention for overall power demand balance adjustment and power
efficiency improvement. Further, adding the element of grid connection technology
to power conditioners enables more optimal and efficient power supply.
We uphold and pursue high-efficiency power conversion as we develop power storage
power conditioners that can control such complex power supply and demand intelligently.
||As connections between grids and batteries make it possible to use unstable natural energy effectively, grid connection control, battery charge/discharge control, and bidirectional conversion technologies control decentralized and complicated energy routes intelligently to support a stable and efficient power supply.
||Since power storage needed charge/discharge battery management technology specially for lithium ion batteries, we have established control technology using communication between battery management units and power units.
Photovoltaic cell generation + power storage system outline
＜General Technical Overview＞
・ Maximum power point tracking (MPPT) technology
・ Multistage constant current charge
・ Cell protection, communication function
・ SOC management
・ DC/AC/DC bidirectional conversion
・ Grid connection stabilization technology (CCCF)
・ All-digital control
・ System grid connection technical requirements
Elemental technology of power conditioner for photovoltaic
generation and power storage
Renewable energy as represented by photovoltaic generation can now supply stable
power through power grid connections. Also, it can now be used in a way advantageous
in terms of both supply and demand, since power can also be sold to the power
company. And, finally, it can now stabilize intermittent energy output and temporal
mismatches of power supply and demand by combining lithium batteries.
Thus, "power leveling " and "distributed supply" are gaining attention as effective
steps to the construction of a low-carbon society, with high expectations for
their future proliferation.
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