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This paper deals with the driver design for Brushless DC Motor (BLDCM) by quasi-sinusoidal voltage source inverter with voltage space vector pulse width modulation (VSVPWM) technology. Traditionally, BLDCM is driven by six-step inverter with digital Hall sensor feedback, and has the property of trapezoidal back EMF. However, this paper presents an approach to generate a quasi-sinusoidal voltage source...
The paper analyses the SVPWM control schema of three-phase inverter employing 120° switch-on mode, proposes a starting control method combined the SVPWM control schema with current regulation adopting the two-point comparator for a sensorless three-phase permanent-magnet (PM) brushless DC (BLDC) motor, establishes the simulation model of the starting control system in Matlab / Simlink environment,...
This paper presents a study of axial flux permanent magnet synchronous motor (AFPMSM) drive system. An internal model control (IMC) strategy is introduced to control the AFPMSM drive through currents, leading to an extension of PI control with integrators added in the off-diagonal elements to remove the cross-coupling effects between the applied voltages and stator currents in a feed-forward manner...
This paper presents an analysis and implementation of a switching vector control scheme for Permanent Magnet Synchronous Motor (PMSM) drive using a digital signal processor (DSP). Firstly, the field orientated vector control theory of PMSM and Space Vector Pulse Width Modulation ( SVPWM ) method are presented. Then a DSP-based full-digital PMSM servo system is developed with power circuit, control...
Using vector control (VC) theory for AC machines can result in high performance speed and torque responses. An induction machine driven by a vector control system exhibits behavior similar to a separately excited DC machine with independently controlled flux and torque. In this paper the d-q model of an induction motor drive is used to derive the state space matrix representation of the drive system...
Indirect field oriented control (IFOC) and direct torque control (DTC) have been widely commercialized in induction motor drives, with each being favored by its supporters. In this paper, the dynamic performance of these drives for an electric vehicle application is examined, and sensitivities to parameter variations affecting this dynamic performance are explored. Key performance measures include...
The application of the slide-mode observer in the sensorless vector-control of permanent magnet synchronous motor (PMSM) is proposed. Design a slide-mode observer to estimate the information of rotor position. Establish the adaptive rule and analysis the stability of the slide-mode observer. The application of the space vector pulse width modulation (SVPWM) is introduced in the control scheme of the...
This paper describes the decoupled torque and flux control of a two series connected five-phase induction machine (IM) drive that is supplied by a three-level five phase SVPWM inverter, using a well know phase transposition in the series connection. At the first, the decoupled torque and flux controller is developed based on variable-structure control (VSC). Then, a sliding-mode (SM) flux observer...
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