A Low-Cost and Simple Control Approach for Two-Phase Induction Motors at High Speeds

作者：Ziaeinejad Saleh^*; Sangsefidi Younes; Mehrizi Sani Ali; Pairodin Nabi Hamidreza; Shoulaie Abbas

来源：EPE Journal, 2014, 24(3): 31-38.

DOI：10.1080/09398368.2014.11742750

• Approximate stator flux control
• scalar control
• two-leg inverter
• two-phase induction motor

This paper proposes a method to control two-phase induction motors using a two-leg inverter. This method represents superior dynamic behavior and is suitable for the field-weakening region and high speed applications. In the proposed Approximate Stator Flux Control (ASFC) method, mechanical sensors and current transducers are not required. Therefore, the implementation cost of ASFC drives is comparable with the conventional scalar control drives. In the ASFC method, a switching table controls the rotating field speed of the motor by adjusting its stator flux modulus. The relationship between the stator flux modulus and rotating field speed is derived. The average switching frequency of an ASFC drive is also derived. This parameter is controlled by the ASFC drive. Via simulation and experimental case studies, high-speed operation of a two-phase ASFC drive is compared with the performance of a conventional scalar drive in start-up and steady state conditions. The validity of the presented equations required to control two-phase induction motors is also demonstrated.

• 出版日期2014-9