tailieunhanh - Electric Machines and Drives part 13

Tham khảo tài liệu 'electric machines and drives part 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Space Vector PWM-DTC Strategy for Single-Phase Induction Motor Control 229 Te p flỉL - MS1 53 A 4 poles A HP 110 V 60 Hz asymmetrical 2-phase induction machine was used with the following parameters expressed in ohms Krause et al. 1995 rds Xid Xmd rqs Xiq Xmq r r X lr . The total inertia is J X 10-2 kgm2 and Nsd Nsq where Nsd is the number of turns of the main winding and Nsq is the number of turns of the auxiliary winding. It was considered a squirrel cage motor type with only the d rotor axis parameters. In terms of stator-flux field-orientation T p i sA 54 According to 49 and 50 the stator flux control can be accomplished by vsDs1 and torque Wi ll- I ri ll Iww 7iSf Tin cl .iliir Will I1 11 .-i W .nliiwic 71S wiwl 7ìSf mi TtrrArlnr-orl t-m Ivww PT contioy vQs1 .esLaLoivoiLageieieiencevaiues VDs1 an vQs1 aiepiouceyt vo controllers. The stator flux position is used in a reference frame transformation to orient the dq stator currents. Although there is a current loop to decouple the flux and torque control the DTC scheme is seen as a control scheme operating with closed torque and flux loops without current controllers Jabbar et al. 2004 . 6. Simulation results Some simulations were carried out in order to evaluate the control strategy performance. The motor is fed by an ideal voltage source. The reference flux signal is kept constant at Wb. The reference torque signal is given by 0 1 -1 Nm at 0 s respectively. The SVPWM method used produced dq axes voltages. The switching frequency was set to 5kHz. Fig. 8 shows the actual value of the motor speed. In Fig. 9 and Fig. 10 the torque Fig. 8. Motor speed rpm . 230 Electric Machines and Drives Time s Fig. 9. Commanded and estimated torque Nm . Fig. 10. Commanded and estimated flux Fig. 11. Stator currents in stator flux reference frame. Space Vector PWM-DTC Strategy for Single-Phase Induction Motor Control 231 waveform and the flux .

TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.