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This paper presents a sensorless hysteresis direct torque control method using matrix converter fed IPM synchronous motor. This method allows a reduction of the harmonic content of the input current without any negative effect on the drive performance. The merits of the original HDTC scheme, simplicity, robustness and high dynamics, are preserved. Moreover, by applying two input vectors at each cycle,...
This paper presents a speed and position estimation method for the sensorless direct torque and flux control scheme for matrix converter driven interior permanent-magnet synchronous motor. The adaptive sliding mode observer simultaneously estimates the stator flux, speed and rotor position. A permanent magnet flux estimator is integrated with the observer to compensate the effect of inaccurate PM...
This paper presents a sensorless direct torque control method for matrix converter fed interior permanent magnet synchronous machine. The matrix converter is split into rectifier and inverter stages based on the Indirect Space Vector Modulation theory. Therefore, the hysteresis flux and torque control is achieved by selecting one of the six active and two zero voltage vectors in the inverter stage...
This paper presents a speed and position estimation method for the sensorless direct torque and flux control scheme for matrix converter driven interior permanent-magnet synchronous motor. This method is based on an adaptive sliding mode observer that is enhanced with a high-frequency signal injection technique at low speed and standstill. The direct closed-loop control of both torque and stator flux...
This paper presents a modified direct torque control scheme for matrix converter drives. This method allows a reduction of the harmonic content of the input current without any negative effect on the drive performance and its simplicity. By using two switching configurations at each cycle, the synthesis of the input current vector is more accurate than the previous method at the same sampling period,...
This paper presents an improved direct torque control (DTC) method for sensorless matrix converter drives using a multi-mode indirect space vector modulation (ISVM) and an adaptive sliding mode observer. The drive system is characterized by reduced torque and flux ripples, unity input power factor, sinusoidal input/output waveforms and good sensorless control performance over a wide speed range, while...
This paper presents an improved direct torque control (DTC) scheme based on indirect space vector modulation (ISVM) for matrix converter drives. Independent closed-loop control of both torque and stator flux is achieved by using two proportional-integral (PI) controllers. The reference voltages generated by the two PI controllers are provided for an ISVM unit which replaces the switching tables in...
This paper presents a simplified and improved direct torque control (DTC) scheme for matrix converter drives. This method allows reducing the harmonic content of input current without any negative effects on the drive performance. Moreover, by applying two input vectors at each cycle, the instantaneous control of input power factor is achieved without the displacement estimator, the low-pass filter...
This paper presents a novel direct torque control (DTC) scheme of an interior permanent magnet synchronous motor (IPMSM) fed by a matrix converter. In the proposed scheme, a sliding mode torque and stator flux controller is integrated with a simplified Venturini's modulation algorithm to achieve low torque and flux ripples, sinusoidal input/output currents and unity fundamental displacement factor...
An improved direct torque control (DTC) scheme for the matrix converter fed interior permanent magnet synchronous machine (IPMSM) is presented in this paper. In the proposed scheme, the modified DTC strategy for matrix converter IPMSM drives is achieved using a variable-structure torque and stator flux controller, and indirect space vector modulation (ISVM) technique. It features low torque and flux...
This paper presents a novel direct torque control (DTC) scheme of an interior permanent magnet synchronous motor (IPMSM) fed by a matrix converter. In the proposed scheme, a sliding mode torque and stator flux controller is integrated with a simplified Venturini's modulation algorithm to achieve low torque and flux ripples, sinusoidal input/output currents and unity fundamental displacement factor...
An improved direct torque control (DTC) scheme for the matrix converter fed interior permanent magnet synchronous machine (IPMSM) is presented in this paper. In the proposed scheme, the modified DTC strategy for matrix converter IPMSM drives is achieved using a variable-structure torque and stator flux controller, and indirect space vector modulation (ISVM) technique. It features low torque and flux...
A modified direct torque control (DTC) scheme for the matrix converter fed interior permanent magnet synchronous machine (IPMSM) is proposed in this paper. Using the proposed method, besides the advantages of direct torque control strategy with matrix converter, it is possible to minimize the torque and flux ripples while maintaining constant switching frequency. In the proposed scheme, a modified...
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