Model predictive control of a two-motor drive with five-leg inverter supply

Model predictive control (MPC) for a two-motor drive, supplied from a five-leg inverter, is presented in this paper. As an alternative to existing methods, use of MPC in multimachine drives has the advantages of independent fast current control of the machines, elimination of the closed-loop system's cascaded structure, and a reduced number of microcontrollers. A vector control algorithm is required, necessitating state-space modeling, with each machine's direct- and quadrature-axis currents chosen as state variables. Prediction of future states is via a discrete-time model of the five-leg inverter and a piecewise-affine model of two permanent-magnet synchronous motors (PMSMs). A method which eliminates unfeasible switching states inherent in reduced-switch-count inverters while reducing computation and sampling times is proposed. The algorithm is implemented in a TMS320F28335 DSP microcontroller, which controls the five-leg inverter and the two PMSMs. Simulation and experimental results validate the presented control concept.

digital signal processing chips, discrete time systems, electric current control, invertors, machine vector control, microcontrollers, motor drives, permanent magnet motors, predictive control, synchronous motors, mpc, pmsm, tms320f28335 dsp microcontroller, closed-loop system cascaded structure elimination, discrete-time model, five-leg-inverter supply, independent fast current control, machine direct-axis current, machine quadrature-axis current, microcontroller, model predictive control, multimachine drive, permanent-magnet synchronous motor, piecewise-affine model, reduced-switch-count inverter, state-space modeling, two-motor drive, vector control algorithm, computational modeling, cost function, inverters, predictive models, switches, table lookup, vectors, five-leg inverter, model predictive control (mpc), two-machine drive, vector control

10.1109/TIE.2012.2186770

0278-0046

54-65

Lim, Chee Shen

616d0697-a5d5-4079-adaa-6686e5a758fe

Abd Rahim, Nasrudin

fb35190b-322c-41b3-90a1-8ebc015c680f

Hew, Wooi Ping

99b58e43-319f-4562-b05b-071eda9999c9

Levi, Emil

8e3706c3-3018-46be-a5ad-eb078622927f

January 2013

Lim, Chee Shen

616d0697-a5d5-4079-adaa-6686e5a758fe

Abd Rahim, Nasrudin

fb35190b-322c-41b3-90a1-8ebc015c680f

Hew, Wooi Ping

99b58e43-319f-4562-b05b-071eda9999c9

Levi, Emil

8e3706c3-3018-46be-a5ad-eb078622927f

Lim, Chee Shen, Abd Rahim, Nasrudin, Hew, Wooi Ping and Levi, Emil (2013) Model predictive control of a two-motor drive with five-leg inverter supply. IEEE Transactions on Industrial Electronics, 60 (1), 54-65. (doi:10.1109/TIE.2012.2186770).

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Accepted/In Press date: 20 January 2012

Published date: January 2013

Keywords: digital signal processing chips, discrete time systems, electric current control, invertors, machine vector control, microcontrollers, motor drives, permanent magnet motors, predictive control, synchronous motors, mpc, pmsm, tms320f28335 dsp microcontroller, closed-loop system cascaded structure elimination, discrete-time model, five-leg-inverter supply, independent fast current control, machine direct-axis current, machine quadrature-axis current, microcontroller, model predictive control, multimachine drive, permanent-magnet synchronous motor, piecewise-affine model, reduced-switch-count inverter, state-space modeling, two-motor drive, vector control algorithm, computational modeling, cost function, inverters, predictive models, switches, table lookup, vectors, five-leg inverter, model predictive control (mpc), two-machine drive, vector control

Organisations: EEE