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N NO OM MU UR RA AC CO O.. The parts come from Japanese solar car race in racing truck!! NOMURA CO. was founded by Kei Nomura of Japanese top gun solar car driver for supply solar car parts. We produce and supply
the highest performance solar car parts. All the parts well tested in very hard condition in the circuit truck and real race condition. Also it was tested by many major Japanese solar car teams and good result with them. We are pleased offer tough, strong, light weight, high efficiency, and convenience products.
The NEW developed our MPPT is targeting SUNPOWER C60 Silicon solar cells module. Si solar cell has only 0.5V/cell (approx), Thus it needs to connect many cells in series to have suitable voltage to solar car in case standard MPPT. However the many cells in series connection can have below problems, but our MPPT does not have such problems due to special design. The advantages 1) No problem even different body surface angle. 2) Minimum loss in case damage or shadow to one cell. 3) Very high efficiency even small load condition. 4) IC tip is included synchronous rectification FET. 5) Extremely small parts with high efficiency as multi-phase switching. 6) Adjustable output voltage. 7) Through and by passing mode included in case for battery low voltage
NOMURA CO. 1-18, Koshien-Abiki Cho, Nishinomiya, HYOGO 663-8156 JAPAN. Tel : +81 90-1586-7484 Fax: +81 6-6453-0635 e-mail:
[email protected] Youtube: nomnom13 SKYPE: nomnom13
What is advantage our MPPT? The NEW developed our MPPT is targeting Silicon (Si) solar cells solar array. Si solar cell has only 0.5V/cell (approx), Thus it needs to connect many cells in series to have suitable voltage to solar car in case standard MPPT. However the many cells in series connection can have below problems, but ours does not have. 1) Different body surface angle The solar car is considered the smallest aerodynamics as small as possible, thus the body top surface has slightly curving (or shaping) which provide different angle. In case the standard MPPT, it requires cell connecting approx 130cells per 1 normal MPPT if use Sunpower C60 cell and the area will be 1.99m2. (153.32cm2 x 130cells). Such big area must be have some different angle surface which provide different sun light power to the solar cells. Thus the output power will be reduced according weakest power cells due to angle surface location and series connected all the cell. However our MPPT need only 26cells (or less) per 1 unit MPPT. Thus our MPPT only have minimum loss even angle surface. The below sketch is explaining how difference can be happen even same configuration solar panel. However this is briefly circulation. In case 26cells in one module = 3.42W/cell x 26cells 90W 90W x 5modules = 450W in case no loss. Traditional Traditional MPPT 80W x 5modules = 400W 400W x 99% = 396W
Our MPPT 80W + 85W + 90W + 85W + 80W = 420W 420W x 99% = 415W
Here you can see 19W difference which means 57W difference if consider 3ch line
NOMURA CO. 1-18, Koshien-Abiki Cho, Nishinomiya, HYOGO 663-8156 JAPAN. Tel : +81 90-1586-7484 Fax: +81 6-6453-0635 e-mail:
[email protected] Youtube: nomnom13 SKYPE: nomnom13
