Asymmetric Space Vector Modulation for PMSM Sensorless Drives Based on Square-Wave Voltage-Injection Method

Zhang, Hang; Liu, Weiguo; Chen, Zhe; Luo, Guangzhao; Liu, Jianxing; Zhao, Dongdong

doi:10.1109/tia.2017.2772166

Cited by 48 publications

(14 citation statements)

References 25 publications

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“…where L denotes the Laplace operator. Actually, (18) always acts as the resonant controller to track the AC reference, and this is one typical application scenario of the internal model principle. However, controllers indicated by (18) are with a narrow bandwidth, and by including a damping factor into the denominators, the bandwidth of transfer-functions in (18) has potential to be expanded, and this yields the following representations…”

Section: The Proposed Remedy Methods a Frequency Domain Analysismentioning

confidence: 99%

“…Besides, the modulation of ultrahigh frequency voltage via inverter chopping maybe not as efficient as it seems. This problem is aware of in [18], and an asymmetrical SVPWM is suggested to modulate the squarewave voltage. Additionally, thermal issues due to ultra-high frequency injection may cause irreversible demagnetization of PMs, and thereby this ultra-high frequency injection method is typically avoided in the industrial applications.…”

Section: Introductionmentioning

confidence: 99%

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High-Frequency Injection-Based Sensorless Control for a General Five-Phase BLDC Motor Incorporating System Delay and Phase Resistance

Tian

Molinas

2019

IEEE Access

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This paper investigates the sensorless control of a general Five-phase permanent magnet brushless DC (5-BLDC) motor working at the low speeds. High frequency (HF) injection-based sensorless control is most popular, however, the system delay and stator resistance could deteriorate the sensorless control performance. In this paper, an HF model of 5 BLDCs at frequency-domain is primarily established as a replacement over the conventional static model, and an interpretation from the sinusoidal internal model is carried out to direct the sensorless control implementation. Accordingly, the measured d-axis HF current, which is typically neglected in the conventional method, is reused to demodulate the position angular information from the measured q-axis HF current. The proposed sensorless control is performed on a 5 BLDC drive, and experimental results confirm the effectiveness of this method while comparing its performance with the conventional method. INDEX TERMS Sinusoidal internal model, high-frequency injection, five-phase BLDC motor, sensorless control.

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Section: The Proposed Remedy Methods a Frequency Domain Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Frequency Injection-Based Sensorless Control for a General Five-Phase BLDC Motor Incorporating System Delay and Phase Resistance

Tian

Molinas

2019

IEEE Access

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“…After calculating T 1 , T 2 , and T 0 , the output voltage waveforms of the converter are shown in Fig. 8 in one cycle by seven-segment vector assignment method as In order to improve the control performance of the grid-side output current and reduce the harmonic content in the output current, this paper uses the asymmetric sampling SVM (ASVM) modulation method presented in [30]. The realisation idea of ASVM is that the reference voltage is sampled twice within a control cycle.…”

Section: Space Vectors Generation For Svpwmmentioning

confidence: 99%

Direct grid‐side current model predictive control for grid‐connected inverter with LCL filter

Zhang

Tan

Xian

et al. 2018

IET Power Electronics

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On control of the grid-connected inverter (GCI) with LCL filter, the inverter-side current model predictive control is adopted conventionally. The ultimate grid-side current is controlled indirectly by control of inverter-side current. The ideal scenario is that grid-side current is directly controlled. However, the conventional control model is complicated and the calculation is heavy. This study proposed a novel direct grid-side current model predictive control (GSC-MPC) for GCI with LCL filter. Based on timing coordination of both forward and backward difference methods, a direct connection is established between the grid-side output current and the inverter-side output voltage. Meanwhile, a proper mathematical model is built for an improved model predictive control. The exact required voltage vector in the next sampling interval is predicted and calculated by this model. The output optimal voltage vector is modulated by space vector pulse width modulation technique to control the inverter. Furthermore, the proposed GSC-MPC is rather robust to parameter variation. Simulation and experimental results present that the proposed GSC-MPC can improve the current control performance effectively for GCI with LCL filter.

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“…Technical troubles of a position sensor attached to the traction machine often become significant issues in harsh conditions. To avoid those sensor troubles and improve durability and reliability of the traction system, the position sensorless technique has been attracting attention from both industry and academia [1][2][3]. However, it faces a great challenge in the case of rail transit application where the highest inverter switching frequency is <1 kHz.…”

Section: Introductionmentioning

confidence: 99%

Comparison analysis of low‐switching‐frequency‐based IPMSM sensorless drives considering regulators, observer and inverter non‐linearity

Zhang

Liu

Chen

et al. 2019

IET Electric Power Applications

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This study proposes an integration design of sensorless closed-loop drives for rail transit application employing interior permanent magnet synchronous machine (IPMSM), which works under low switching frequency. Due to the long signal sampling period in high-speed region, the individual back-EMF observer cannot ensure the sensorless closed-loop control stability. In order to increase the speed dynamic response and decouple the d-q axes currents accurately, a fast non-singular terminal sliding mode control is designed. It combines a linear sliding mode factor with conventional non-singular terminal sliding mode and is applied uniformly to position observer, speed and currents regulators. Then, considering the effect of inverter nonlinearity on position observer, the observed position error caused by dead-time is analysed, and a compensation method based on q-axis voltage error is proposed. Based on the above methods, a comparison analysis of position observer, speed and currents regulators is given. Finally, a 3.7 kW IPMSM is tested to verify the feasibility of the improved sensorless method. Nomenclature i dq i dq * actual (given) stator current along d-axis(q-axis) of the rotor flux, A i αβ i^α β actual (estimated) stator currents of αβ-axes, A ω r ω r actual (estimated) value of electrical angular velocity, RPM L d L q stator inductance of d-axis(q-axis), H R s stator resistance, Ω ψ f rotor permanent magnet flux linkage, Wb u dq stator voltage along d-axis(q-axis) of the rotor flux, V u αβ stator voltages of αβ-axes, V e λ e^λ extended electromotive force (estimated value), V T L T^L load torque (estimated value), Nm T e T^e electromagnetic torque (estimated value), Nm p and q positive odd numbers and satisfy 1 < p/q < 2 γ, ε and η design parameters for the sliding mode control law, positive L linear gain factor, as shown in (8) D differential operator

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Asymmetric Space Vector Modulation for PMSM Sensorless Drives Based on Square-Wave Voltage-Injection Method

Cited by 48 publications

References 25 publications

High-Frequency Injection-Based Sensorless Control for a General Five-Phase BLDC Motor Incorporating System Delay and Phase Resistance

High-Frequency Injection-Based Sensorless Control for a General Five-Phase BLDC Motor Incorporating System Delay and Phase Resistance

Direct grid‐side current model predictive control for grid‐connected inverter with LCL filter

Comparison analysis of low‐switching‐frequency‐based IPMSM sensorless drives considering regulators, observer and inverter non‐linearity

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