This paper proposes a gateway framework for in-vehicle networks based on CAN, FlexRay, and Ethernet. The proposed gateway framework is designed to be easy to reuse and verify, in order to reduce development costs and time. The gateway framework can be configured, and its verification environment is automatically generated by a program with a dedicated graphical user interface. The gateway framework provides state of the art functionalities that include parallel reprogramming, diagnostic routing, network management, dynamic routing update, multiple routing configuration, and security. The proposed gateway framework was developed, and its performance was analyzed and evaluated.

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During 2014-2016, farmers in Chau Thanh district, Tra Vinh province, Vietnam under financial support from Tra Vinh Department of Science and Technology, applying technical package and supervision of IAS and economic contract of Ecotiger Ltd, Company produced, processed and exported organic rice following standard of EU, USDA and JAS to EU and America. In 2015, mean yield of organic rice was 4.29 MT/ha, inorganic rice being 5.40 MT/ha, net profit of organic rice was 3,431,000 VND/ha higher than inorganic rice. In total 50 ha, total profit was 1,201,150,000 VND. In 2016, profit of organic rice was 36,481,250 VND/ha, while inorganic rice being 23,950,000 ND/ha. Profit ratio of organic rice was 2.7; inorganic rice being 1.7, net profit was 12,531,250 VND/ha. Besides, each hectare of tiger prawns or crabs rotated after organic rice harvested 70 million VND, net profit of 40 million VND. In some areas, models of raising green lobster intercropped with rice + raising other sources of sea fishes (goby, mullet, or land shrimp) had additional income of 20-30 million VND/ha. In 2015 about 200 MT and 2016 about 600 MT of organic rice attained organic standard of EU, USDA and JAS exported to EU and America. Ecotiger 1 strives for 2000 MT under contract of exporting to foreign partners.

During 2014–2016, farmers in Chau Thanh district, Tra Vinh province, Vietnam under financial support from Tra Vinh Department of Science and Technology, applying technical package and supervision of IAS and economic contract of Ecotiger Ltd, Company produced, processed and exported organic rice following standard of EU, USDA and JAS to EU and America. In 2015, mean yield of organic rice was 4.29 MT/ha, inorganic rice being 5.40 MT/ha, net profit of organic rice was 3,431,000 VND/ha higher than inorganic rice. In total 50 ha, total profit was 1,201,150,000 VND. In 2016, profit of organic rice was 36,481,250 VND/ha, while inorganic rice being 23,950,000 ND/ha. Profit ratio of organic rice was 2.7; inorganic rice being 1.7, net profit was 12,531,250 VND/ha. Besides, each hectare of tiger prawns or crabs rotated after organic rice harvested 70 million VND, net profit of 40 million VND. In some areas, models of raising green lobster intercropped with rice + raising other sources of sea fishes (goby, mullet, or land shrimp) had additional income of 20–30 million VND/ha. In 2015 about 200 MT and 2016 about 600 MT of organic rice attained organic standard of EU, USDA and JAS exported to EU and America. Ecotiger1 strives for 2000 MT under contract of exporting to foreign partners.

This paper presents an adaptive virtual impedance based droop control scheme for parallel inverter operation in low voltage microgrid. Because it is essential to achieve power sharing between inverters in microgrid, various droop control schemes have been proposed. In practice, the line impedance between inverters and the point of common coupling (PCC) in microgrid are not always equal. This imbalance in line impedance often results in a reactive power mismatch among inverters. This problem has been solved by introducing a virtual impedance loop in the conventional droop control scheme. However, the reactive power sharing performance of this method is still deteriorated when the line impedances change during operation. To overcome such a problem, a new control scheme that is based on a virtual impedance loop and an impedance estimation scheme is proposed. To monitor the changes in line impedances, the impedance estimator is implemented by using the output voltages and currents of inverters as well as the voltages at the PCC. To compensate for the reactive power mismatch due to the line impedance changes, the estimated line impedance is fed to the virtual impedance loop in which it adjusts the virtual impedance value. Comparative simulation results with the conventional ones verify the effectiveness of the proposed adaptive virtual impedance based droop control scheme.