FPGA Implementation of a Hybrid Sensorless Control of SMPMSM in the Whole Speed Range

Surface-mounted permanent magnet synchronous machine with concentrated windings (cwSPMSM) is a highperformance drive machine and has been adopted in many applications. The difficulty of implementing its sensorless control at low and zero speeds is its multiple saliencies, which is much more significant than most other ac machines. The traditional decoupling methods provide successful results only under the condition that high-order saliencies are not stronger than half of the primary saliency. Furthermore, the behavior of the multiple saliencies is principally frequency dependent. Based on the characteristics of such machines, this paper proposes a multisignal injection method for realizing sensorless control. This method injects multiple highfrequency signals with different frequencies and magnitudes into the machine. Different frequency components in the response current signals are demodulated and then combined together to get the clear primary saliency signal, which is used to identify the rotor position. This new method was validated using a cwSPMSM at low speed. The experimental results proved the effectiveness and accuracy of the new method.Index Terms-Multisignal injection, sensorless control, surfacemounted permanent magnet synchronous machine with concentrated windings (cwSPMSM).

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“…(22) It contains the primary saliency 2θ e and the secondary saliency −4θ e . Furthermore, from Fig.…”

Section: A Nsc Analysismentioning

confidence: 99%

“…Fig. 1 gives the structure of a sensorless field-oriented control system for a PMSM using the HF signal injection method [22]. The input is the speed command ω * e .…”

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confidence: 99%

Sensorless Control for SPMSM With Concentrated Windings Using Multisignal Injection Method

Chen

Gao

Wang

et al. 2014

IEEE Trans. Ind. Electron.

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“…Sensorless control schemes are divided in the two main categories of the ones relying on motional back electromotive force (EMF) [11]- [13] and the ones tracking the magnetic saliency of the rotor [6]- [14], i.e., by injecting additional high-frequency (HF) signals into the machine. Very often, the two methods are combined to include the standstill operating region [15]- [17]. Examples of sensorless DTC for interior PM and PM-assisted machines are in [6] and [18]- [21].…”

Section: Introductionmentioning

confidence: 99%

Combined Active Flux and High-Frequency Injection Methods for Sensorless Direct-Flux Vector Control of Synchronous Reluctance Machines

Yousefi-Talouki

Pescetto

Pellegrino

et al. 2018

IEEE Trans. Power Electron.

102

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This paper proposes a sensorless control scheme for synchronous reluctance (SyR) motor drives based on the direct-flux vector control (DFVC) method. The control operates in stator-fluxoriented coordinates, using constant switching frequency. A hybrid position and speed observer is proposed, based on the combination of the active flux concept and high-frequency signal injection and demodulation. The two methods are fused together to form a unique position and speed estimate signals, with seamless transition between the two models based on reference speed. The proposed observer covers a wide speed range, from standstill operation at full load to flux weakening (FW). Furthermore, it is inherently immune from position estimation error caused by cross saturation, as proven mathematically and experimentally. The motor is operated according to the maximum torque per ampere (MTPA) law. Specific issues related to MTPA around zero torque are addressed in this paper. The proposed control technique extends the range of application of the DFVC to encoderless drives, and can be usefully adopted in those applications where both zero-speed and FW speed range operations are necessary, such as home appliances, or automotive and aerospace actuators and generators. A 2.2-kW SyR motor prototype was tested to verify the feasibility of the proposed method. Key tuning aspects are addressed in this paper.

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“…Among the solutions for fast prototyping high performance control algorithms, Simulink HDL (Hardware Description Language) Coder is a suitable software to generate HDL codes (VHDL or Verilog) from fixed point Simulink models [10]. By exploiting its model blocks, users have to build the Simulink model with provided library to generate HDL codes which facilitate the implementation of complex control systems that require dedicated multipliers and computing units.…”

Section: Introductionmentioning

confidence: 99%

On FPGA Implementation of a Continuous-Discrete Time Observer for Sensorless Induction Machine using Simulink HDL Coder

Besbes¹,

Sad²,

M’Śahli³

et al. 2017

ijacsa

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This paper deals with the design of a continuousdiscrete time high gain observer (CDHGO) for sensorless control of an induction machine (IM). Only two weakly sampled stator current measurements are used to achieve a real-time estimation of the rotor flux, the mechanical speed and the load torque. The feasibility of implementing our algorithm on the FPGA target is discussed in term of the best word format choice for internal variables and in term of making up for problems attached with complex bloc diagram VHDL conversion. Before an eventual implementation on the Virtex FPGA board, a validation of the proposed observer is performed through the ModelSim software where we show that the waveforms of estimates bring closer the true ones.

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FPGA Implementation of a Hybrid Sensorless Control of SMPMSM in the Whole Speed Range

Cited by 61 publications

References 18 publications

Sensorless Control for SPMSM With Concentrated Windings Using Multisignal Injection Method

Sensorless Control for SPMSM With Concentrated Windings Using Multisignal Injection Method

Combined Active Flux and High-Frequency Injection Methods for Sensorless Direct-Flux Vector Control of Synchronous Reluctance Machines

On FPGA Implementation of a Continuous-Discrete Time Observer for Sensorless Induction Machine using Simulink HDL Coder

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