Abstract
This paper proposes a modified predictive direct torque control (MPDTC) application-specific integrated circuit (ASIC) with multistage hysteresis and fuzzy controller to address the ripple problem of hysteresis controllers and to have a low power consumption chip. The proposed MPDTC ASIC calculates the stator’s magnetic flux and torque by detecting three-phase currents, three-phase voltages, and the rotor speed. Moreover, it eliminates large ripples in the torque and flux by passing through the modified discrete multiple-voltage vector (MDMVV), and four voltage vectors were obtained on the basis of the calculated flux and torque in a cycle. In addition, the speed error was converted into a torque command by using the fuzzy PID controller, and rounding-off calculation was employed to decrease the calculation error of the composite flux. The proposed MDMVV switching table provides 294 combined voltage vectors to the following inverter. The proposed MPDTC scheme generates four voltage vectors in a cycle that can quickly achieve DTC function. The Verilog hardware description language (HDL) was used to implement the hardware architecture, and an ASIC was fabricated with a TSMC 0.18 μm 1P6M CMOS process by using a cell-based design method. Measurement results revealed that the proposed MPDTC ASIC performed with operating frequency, sampling rate, and dead time of 10 MHz, 100 kS/s, and 100 ns, respectively, at a supply voltage of 1.8 V. The power consumption and chip area of the circuit were 2.457 mW and 1.193 mm × 1.190 mm, respectively. The proposed MPDTC ASIC occupied a smaller chip area and exhibited a lower power consumption than the conventional DTC system did in the adopted FPGA development board. The robustness and convenience of the proposed MPDTC ASIC are especially advantageous.
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering
Reference25 articles.
1. A new quick-response and high-efficiency control strategy of an induction motor;IEEE Trans. Ind. Appl.,1986
2. Direct self-control (DSC) of inverter-fed induction machine;IEEE Trans. Power Electron.,1988
3. Koratkar, P.J., and Sabnis, A. (2017, January 6–7). Comparative analysis of different control approaches of direct torque control induction motor drive. Proceedings of the 2017 International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT), Kerala, India.
4. Mohamed, C., Golea, A., and Benchouia, M.T. (2015, January 13–15). Implementation of a predictive DTC-SVM of an induction motor. Proceedings of the 2015 4th International Conference on Electrical Engineering (ICEE), Boumerdes, Algeria.
5. Kumar, A., Fernandes, B.G., and Chatterjee, K. (2004, January 2–6). Simplified SVPWM-DTC of 3-phase induction motor using the concept of imaginary switching times. Proceedings of the 2004 30th Annual Conference of IEEE Industrial Electronics Society, Busan, Korea.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献