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This paper investigates the analytical models of Conduction and Switching Losses (CASLs) of the three-phase ac-dc matrix rectifier. An analytical model of CASLs is obtained through the examination of operating principles for three-phase ac-dc matrix rectifier. The effectiveness of the models has been experimentally verified.
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...
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