An efficient microprocessor-based pulse-width modulator using space vector modulation strategy

Zhang, L.; Wathanasarn, C.; Hardan, F.

doi:10.1109/iecon.1994.397755

Cited by 12 publications

(5 citation statements)

References 6 publications

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“…They are variables in the rotor-fluxoriented reference frame, thus the block ejpr has to be used to transform them into the D-and Q-axis stator voltage components in the stationary reference frame. After that by using the SVPWM block, which is new technique and has some advantages compared with the normal PWM [7], the switching signals to command the power devices are obtained. It can be seen in the Fig.…”

Section: Vector Control Algorithm and Digital Implementationmentioning

confidence: 99%

“…At last by using the experimental results done with the hardware platform, the good steadydynamic performance of the variable-speed induction motor drive based on DSP2812 is proved. (2) And the stator and rotor flux-linkage voltage in the same reference frame can be expressed: /s =L is+Lmir (3) Y/r = L ir + Lm is (4) And the expression for electromagnetic torque equation in the same reference frame is: 'mr = VL =I+(1+r)ir (6) Lm Substitution of (3) into (1) yields the following stator voltage equation in the rotor-flux-oriented reference frame: dis + dir + USIS RjL~+L4ct4C rjCoLj+j~L (7) = UM + jUTs Because the rotor magnetizing-current space phasor is coaxial with the M-axis in the special frame fixed on the rotor flux, imr imr | the following equation is obtained: …”

Section: Introductionmentioning

confidence: 99%

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Study on the Vector Control Method of IM for Variable Speed Drive Based on DSP

Zhang

Yang

2006

2006 IEEE/RSJ International Conference on Intelligent Robots and Systems

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This paper proposes a fully digital high performance variable speed drive of induction motor implementing based on a single chip DSP motor controller. Some important models and features of the classic FOC are analyzed deeply and the implementing flowchart is given. The proposed speed control algorithm programming in C++ is realized by the TMS320F2812 DSP within 25us offering a fast current response. Experimental results show that very well static-and transientperformance can be obtained by the proposed variable-speed drive with reduced hardware and higher reliability. Index Terms -Induction motor, vector control, DSP. NOMENCLATURE Us, Ur Stator and rotor voltage space phasor im,iS, ir Magnetizing, stator and rotor current space phasor /V[s ' r Stator and rotor flux-linkage space phasor Lm, Ls, Lr Magnetizing, stator and rotor inductance respectively Rs Rr Stator and rotor resistance at)e Ct)r The angular speed of stator flux and rotor te the electromagnetic torque Rotor leakage factor (JLr / Lm,) and total leakage factor (1 -L2 I LL) Rotor time constant (Lr I Rr) and stator transient time constant (uL, I Rs ) Subscripts denoting M-and T-axis of the rotor -flux-oriented reference frame

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Section: Vector Control Algorithm and Digital Implementationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on the Vector Control Method of IM for Variable Speed Drive Based on DSP

Zhang

Yang

2006

2006 IEEE/RSJ International Conference on Intelligent Robots and Systems

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“…where K pi and K ii are the proportional and integral gains, respectively, which are required to be tuned adequately for good regulation performance. A standard Space Vector PWM scheme (Zhang et al, 1994) is then used to determine the turn-on and turn-off times for inverter switches.…”

Section: On-line Modelling and Control Scheme For Mpptmentioning

confidence: 99%

On-line neural network training for maximum power point tracking of PV power plant

Zhang

Bai

2008

Transactions of the Institute of Measurement and Control

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The paper presents a new method to achieve maximum power point tracking (MPPT) for practical grid-connected PV panels. The method employs the radial basis function neural network (RBFNN) to predict the PV plant's maximum power points corresponding to different weather conditions. The RBFNN model can be trained on-line, autonomously, using a simplified genetic algorithm (SGA). The method has been verified by modelling the MPP points for practical PV panels located in Southampton and Leeds, respectively. The Leeds model has been used to control a prototype PV-grid-connected power generation system. The on-line RBFNN training scheme is discussed in detail and experimental results are presented which compared favourably with the conventional perturbation and observation (P&O) technique.

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“…This implies that the harmonics caused by the various switching patterns of an inverter can be evaluated from the shape of the flux fish. To this end, the fish method is originally applied to analyze the harmonics in voltage space vector pulsewidth modulation (VSV-PWM) [6,7] the motor performance in VSV-PWM inverter is superior to that in S-PWM inverter. The results are also verified by the well-known total harmonic distortion (THD) [8][9][10] analysis.…”

Section: Introductionmentioning

confidence: 99%

Harmonics Analysis in Various PWM Inverters Using the Fish Method

Chan

Lin

Yeh

2005

Electric Power Components and Systems

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The current and torque ripples of a motor are inevitably affected by the switching patterns of the inverter. They are closely related to the variations of the fish coordi- nates. The harmonics effect on a motor can thereby be demonstrated by the figure of the quality measure that indicates the size of the flux fish. In this article, the fish method is originally applied to analyze the harmonics in VSV-PWM, S-PWM inverters and the flux hysteresis control of the DTC. With the help of THD measurements, it is verified that the fish method can be successfully applied to compare the harmonics effects of various switching patterns on the induction motors.Keywords direct torque control (DTC), figure of the quality measure, fish method, flux hysteresis control, S-PWM, VSV-PWM

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An efficient microprocessor-based pulse-width modulator using space vector modulation strategy

Cited by 12 publications

References 6 publications

Study on the Vector Control Method of IM for Variable Speed Drive Based on DSP

Study on the Vector Control Method of IM for Variable Speed Drive Based on DSP

On-line neural network training for maximum power point tracking of PV power plant

Harmonics Analysis in Various PWM Inverters Using the Fish Method

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