This paper planned a novel knowing variable structure-trade based current controller for a three-stage stack driven by a power inverter. The structure details are energy to stack electrical limit, quick strong response, decreased trade frequency, and straightforward tool rule.
So as to meet past details, a sliding mode controller has been produced, which is structured as limited state motor, and performed with a field-programmable Gate Array (FPGA) gadget.
THREE STAGE INVERTER
Predictive Sliding Mode Controller The trade system make real inside the state progress plan include a base number of switches by the three-stage inverter that is confirm done recreation and previous outcomes. Its direction apply the proposed control law gives great brief response by the brushless air prepare motor control.
In any case, this does not confine the more large fitness of the proposed controller that is reasonable for various kinds of air prepare loads (rectifier and inverter) and ac motors (acceptance, synchronous, and dislike). Another logical FPGA torque and speed controller is created, broke down, and conditionally proved.
Fig.1. Basic Circuit Of A VSI.
 M. P. Kazmierkowski, R. Krishnan, F. Blaabjerg, and J. D. Irwin, Control in Power Electronics: Selected Problems. New York: Academic, 2002.
 R. Kennel, A. Linder, and M. Linke, “Generalized predictive control (GPC)—Ready for use in drive applications?” in Proc. IEEE Power Electron. Spec. Conf., 2001, vol. 4, pp. 1839–1844.
 A. Malinowski and H. Yu, “Comparison of embedded system design for industrial applications,” IEEE Trans. Ind. Informat., vol. 7, no. 2, pp. 244– 254, May 2011.
 C. Buccella, C. Cecati, and H. Latafat, “Digital control of power converters—A survey,” IEEE Trans. Ind. Informat., vol. 8, no. 3, pp. 437– 447, Aug. 2012.
 E. Monmasson and M. N. Cirstea, “FPGA design methodology for industrial control systems—A review,” IEEE Trans. Ind. Electron., vol. 54, no. 4, pp. 1824–1842, Apr. 2007.