A method of forming a semiconductor device is provided. An electrical connector for communicative coupling to an inter-integrated circuit bus is provided. The estimated second phase angle is then added to the calculated angle variation so as to form an output current phase angle reference, and an output current phase angle of the generator system is controlled to be aligned with the output current phase angle reference. The corner member is attached to the flange by a load-bearing connection, and can support a predetermined portion of a weight of the duct by connection of the corner member to a first mating member connectable to a second mating member secured to a corresponding support member. Additionally, the device includes a control interface operatively connected between the terminal unit and the apparatus.