Sensorless Control Strategy for IPMSM to Reduce Audible Noise by Variable Frequency Current Injection

Du, Bochao; Zhao, Tianxu; Han, Shouliang; Song, Lei; Cui, Shumei

doi:10.1109/tie.2019.2898621

Cited by 34 publications

(14 citation statements)

References 27 publications

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“…e rotor position of the motor plays an important role in the start and operation of the motor, among which the detection of the initial position angle and the rotor position of the motor operation will affect the performance of the motor speed regulation system [18][19][20][21].…”

Section: Related Researchmentioning

confidence: 99%

Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

Cai

Sun

2022

Mathematical Problems in Engineering

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Electrically excited synchronous motor (EESM) is widely used in many large equipment drives because of its strong overload capacity, high efficiency, and adjustable power factor. The research and development of a high-performance EESM control system can realize the high combination of energy-saving speed regulation and green environmental protection and has a high social effect and economic value. In this paper, the signal injection method is used to obtain the initial rotor position information of EESM. Sliding Fourier transform is used to improve the initial position angle detection method based on the rotor signal injection method, and the improved method is compared with the traditional voltage integration method. Rotor high-frequency signal injection method was used to detect the rotor position information of the motor during operation, and the influence of the damping winding on the rotor signal injection method was analyzed. On the premise that the damping winding had no influence on the method, a method of obtaining the rotor position information of EESM without a speed sensor was designed. Finally, the speed sensorless regulation system using the initial rotor position detection method is simulated, which verifies the accuracy of the proposed speed sensorless control scheme.

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Section: Related Researchmentioning

confidence: 99%

Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

Cai

Sun

2022

Mathematical Problems in Engineering

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“…The system noises can be suppressed by digital BPFs which, however, introduces more digital delays. Besides, the ideal HF voltage reference is leading ahead of the actual HF voltage by one or a half switching period, depending on PWM update modes, and this could cause another time delay to the HF current of interest [22]- [24]. In sum, the phase relationship between the ideal HF voltage reference and the measured HF current becomes indeterministic, therefore the sensorless control performance can be degraded.…”

Section: Challenges Of the Sensorless Control Of 5 Bldc Motor Drivesmentioning

confidence: 99%

“…In this methodology, the injection frequency usually varies between several alternative frequencies. Since the injection frequency is inconstant, the bandwidth of the incorporated HPFs or BPFs (during the HF signal separation), as well as their natural frequencies, are also supposed to follow the change of the injection frequencies [22]. Regardless of the indispensable frequency adaptive BPF (which is quite time consuming compared to its fixed frequency counterpart), the system delay has also to be considered during the HF signal discrimination.…”

Section: Introductionmentioning

confidence: 99%

“…The time delays have limited impacts on the fundamental current/voltage; however, they can be comparable to the injected HF signal. Du et al [22], proposed a bandwidth tunable resonant controller with a phase lead correction (which is 2 sampling periods prior), to enhance the tracking performance of HF currents whose frequency, however, varies. Zhang et al [23], developed a delay-tolerant scheme to cancel the overall system delay in the implementation of PFI.…”

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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“…However, it needs the motor parameters to estimate the position, which leads to a limited accuracy with parameter mismatches. Compared to LF injection, HF injection methods are more robust to parameters variation [18]. There are mainly two kinds of HF injection methods: rotating voltage signal injection and pulsating voltage signal injection [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Improved position signal demodulation method for sensorless control based on HF sinusoidal pulsating voltage injection

Liu

Zhang

Yang

2020

IET Electric Power Applications

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High frequency (HF) sinusoidal pulsating voltage injection is a reliable method for position sensorless control in low speed range. For HF voltage injection based methods, position signal demodulation plays a key role. However, the conventional sinusoidal demodulation suffers from long settling time and limited bandwidth because of requirement of a low-pass filter (LPF) to suppress HF harmonics in the estimated position. Additionally, the overall performance is deteriorated due to the characteristic of linear demodulation. To address these issues, the cube of q-axis HF current instead of itself is used as the carrier of position estimation error. In this way, the input variable for phase-locked loop (PLL) is the cube function with respect to the position deviation. During steady state, the equivalent gain in PLL is very small and thus the estimated position is nonsensitive against high-frequency harmonics, thereby the LPF is no longer required in the proposed method. While during dynamic process, the equivalent gain is increased leading to a fast converging rate when compared with the conventional method. The stability and dynamic performance are theoretically analysed by the magnitude-frequency diagram. The superiority of the proposed method was experimentally justified and the obtained results show that both steady-state and dynamic performance are improved when compared with the prior art.

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Sensorless Control Strategy for IPMSM to Reduce Audible Noise by Variable Frequency Current Injection

Cited by 34 publications

References 27 publications

Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

Speed Sensorless Control Based on Initial Rotor Position Detection for EESM

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

Improved position signal demodulation method for sensorless control based on HF sinusoidal pulsating voltage injection

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