Aiming at the problem of asynchronous movement of the two sides of the H-type platform driven by permanent magnet synchronous motor due to uncertain factors such as permanent magnet linear parameter changes and disturbances, this paper proposes a global fast non-singular terminal sliding mode cross-coupling control, which uses global fast non-synchronized control on a single axis. The singular terminal sliding mode is used as the position controller, and the speed controller uses ordinary PI control to ensure the single-axis tracking accuracy. In this paper, a cross-coupling synchronous controller for driving the H-type platform is studied based on a permanent magnet synchronous motor.

A direct torque control (DTC) strategy for dual-three phase induction machine with one stator winding open-circuited is discussed in this paper. An optimums election scheme of space voltage vector is proposed based on fuzzy control and direct torque control. The largest space voltage vectors are selected to control the machine. To verify the presented method, fuzzy direct torque control of dual-three phase induction machine is simulated. The simulation results show that the machine in fault state is still effectively controlled, and good dynamic performances are obtained with the proposed method.

This paper investigates the function of proposed dual- purpose DASM (Doubly-fed Asynchronous Machine) with emphasis placed on its ability to the maximum power tracking and to the stabilization of the power system including IG wind generators. P (active power) and Q (reactive power) compensation from DASM can be regulated independently through secondary-excitation controlling. Simulation results by PSCAD show that DASM can restore the wind-generator system to a normal operating condition rapidly even following severe transmission-line failures. Comparison studies have also been performed between IG-alone wind farm and proposed system.

An induction machine with capabilities to start and run even with one or more of its stator phases open-circuited when the winding structure is multiphase. Diverse space place of lost stator phase has different influence on machine. In this paper, a method of vector space decomposition is presented to analyze the model of dual-three-phase induction machine with two stator phase open-circuited. Dynamical performance analysis and simulation results of the machine with two opened phases is included.

Conventional hysteresis control schemes for direct torque control (DTC) of dual-three-phase induction machine (DTPIM) usually result highly distorted current waveforms. In this paper, fuzzy space voltage modulation technique is presented for DTPIM. Using two fuzzy controllers, amplitude and space angle of desired stator voltage vector, are obtained dynamically. Combined with unified pulse width modulation method, direct torque control is applied to DTPIM. Simulation results show that fast dynamic responses are achieved. The ripple of torque and the harmonics of stator current in steady state can be reduced remarkably compared with conventional DTC method.

In this paper, direct torque control (DTC) for dual-three phase induction motor (DTPIM) is presented. Rule-based optimum selection schemes of space voltage vector are proposed. Fast torque response with low ripples of torque and flux is achieved. To investigate effects of different amplitude vectors on torque, flux and stator current, the largest, second largest and smallest amplitude vectors are applied to the DTPIM according to the proposed rule-based respectively. The simulation results clearly demonstrate that smaller vectors are beneficial to steady performance of torque, but detrimental to stator current.