Date: 23/02/2009

OKI launches DSP-controlled power conditioner for solar photovoltaic source

OKI Power Tech (OPT) of OKI Electric along with JFE Electrical & Control Systems has developed a photovoltaic (PV) power conditioner. OKI says, this is industry's first power conditioner applying a DSP (Digital Signal Processing) controller to an insulated DCDC converter, which offers high efficient power generation even in insulated applications where power conversion efficiency has been an issue. This power conditioner will be available for sale through OKI, OPT and JFE Electrical & Control Systems' sales channel from October 2009.

"We are excited to enter the PV market with our power conditioners, leveraging our advanced DSP control technology. We will first offer a 10kW output product to Japan's industrial market and will sequentially expand our product lineup to include models with higher capacity," said Akira Ugawa, President of OKI Power Tech. "From October 2009, we plan to offer the product to companies offering systems for use in industrial and commercial applications. In addition, working together with solar battery manufacturers and trading companies, we aim to further expand our business by providing the products to overseas markets."

This newly developed 10kW PV power conditioner system is a compact high-frequency insulated power conditioner to be used outdoors with a focus on heat dissipation and maintainability. Compared to conventional DCDC converter control, it can maintain high power conversion efficiency even when electricity production from solar batteries is low and can maintain a conversion efficiency of over 90% at 50% output. The power condition enables parallel operation with multiple units and also includes a network connection function. Increase output capacity is easier in this power conditioner.

Major specifications of this power condition are,
Input power voltage: DC200V - 450V
Output power voltage: AC202V 3f 50/60Hz(when connected to a power system)
Output power: 10kW
Electric mode: Three-phase three wire (V-grounding, delta connection)
Insulation method: High frequency insulated
Size: 600x600x280mm
Weight: 65kg