Comparative analysis of Hysteresis Current Control and Direct Instantaneous Torque Control of Switched Reluctance Motor

Pratapgiri, Srinivas

doi:10.1109/iceeot.2016.7755219

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…Hysteresis current control (HCC) is the most widely adopted method for controlling phase currents in SRM owing to its distinctive merits, such as simple structure, model independence, fast dynamic response, strong robustness, insensitivity to motor parameter variation and so on [9][10][11]. However, the switching frequency is unfixed in HCC due to the strong nonlinear magnetic characteristics of SRM, which will increase the difficulty of designing an electromagnetic interference (EMI) filter.…”

Section: Introductionmentioning

confidence: 99%

Predictive Current Control for Switched Reluctance Motor Based on Local Linear Phase Voltage Model

et al. 2022

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In this paper, a predictive phase current control (PCC) scheme based on a local linear phase voltage model for a switched reluctance motor is proposed. The current is controlled by regulating the average voltage through PWM, ensuring a fixed switching frequency. A linear model is proposed to approximate the relationship between the voltage and the current slope in a short period. By using the voltage and current slope information in the previous control cycle, the intercept and slope of the model can be identified online. In the previous control cycle, the phase voltage changes from zero to positive or negative DC-link voltage, and then the identified model is used to predict the average voltage required in the next PWM cycle for the actual current so as to accurately track its reference. The effectiveness of the proposed PCC was verified experimentally. The results demonstrate that the proposed control scheme can significantly reduce the current and torque ripples compared to hysteresis control with the same sampling rate. The proposed PCC is easy to implement, does not need to obtain the motor characteristics in advance and is not sensitive to the changes in characteristic parameters caused by motor aging, etc. It is relatively suitable for applications that need to accurately track the given current curve.

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Section: Introductionmentioning

confidence: 99%

Predictive Current Control for Switched Reluctance Motor Based on Local Linear Phase Voltage Model

et al. 2022

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“…In recent decades, the switched reluctance motor (SRM) has drawn increasing attention in some applications such as the electric vehicle, due to its many merits such as high reliability, low cost, and wide operating range [1][2][3]. For SRMs, phase current detection plays a crucial role in phase current control such as hysteresis current control [4], PI current control [5], predictive current control [6,7], diagnosis of power converter [8,9], and most sensorless position estimation methods [10]. Conventionally, each phase of an SRM needs a hall effect sensor along with a signal-conditioning circuit and an analog-to-digital channel to detect its current, and thus current detection of a phase is completely independent of that of any other phase.…”

Section: Introductionmentioning

confidence: 99%

Torque-Enhanced Phase Current Detection Schemes for Multiphase Switched Reluctance Motors with Reduced Sensors

Shen

Wang

et al. 2022

Applied Sciences

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An n/2-sensor-based and an (m + 1)/2-sensor-based phase current detection scheme are proposed for even-numbered switched reluctance motors (EMSRMs) with n phases and odd-numbered switched reluctance motors (OMSRMs) with m phases. For the EMSRMs, the phases are divided into n/2 groups each of which includes two phases furthest from each other, and the lower dc bus is split into n/2 + 1 buses such that the currents through the lower switches of a group flow through a bus whose current is detected by a sensor. For the OMSRMs, the phases are divided into (m + 1)/2 groups and the currents through the lower switches of a group are detected by a multiplexed sensor without converter modification; the phase grouping is generalized as an optimization problem considering the volume and measuring range of the sensors. The schemes can detect the magnetization and freewheeling phase currents under multiphase excitation without pulse injection and voltage penalty. Compared to the existing schemes using cross-winding sensors, the proposed schemes can increase the motor torque by extending the phase conduction region. In addition, the proposed scheme for EMSRMs can combine the low-cost low-side shunt current sensing technique, and the proposed scheme for OMSRMs can increase the current sensing resolution. Simulations are carried out to validate the two proposed schemes. The proposed (m + 1)/2-sensor-based scheme is further verified experimentally.

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“…Nevertheless, the method does not consider the rotor position, which leads to additional negative torque and the reduction of total output torque. A method based on direct instantaneous torque control (DITC) is proposed in [14–18]. The strategy of DITC is to use instantaneous torque hysteresis control according to the torque error, which can effectively suppress the torque ripple.…”

Section: Introductionmentioning

confidence: 99%

Torque ripple suppression of switched reluctance motor by segmented harmonic currents injection based on adaptive fuzzy logic control

Ling

et al. 2020

IET Electric Power Applications

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Referencing to the correlation between electromagnetic torque and winding current of switched reluctance motor (SRM), a novel adaptive fuzzy control method with segmented harmonic currents injection for SRM is presented in this study. The proposed method divides the conduction interval of each phase into n segments and injects the nth harmonic current into the reference current of each phase. The coefficient of the harmonic current in each section is automatically adjusted by fuzzy control strategy according to the torque error. In this case, the current waveform can generate additional torque to suppress the torque ripple caused by the square wave reference current. Also, the novel method can achieve adaptive control over a wide range of load and angular velocity below the base speed. In addition, the control method is flexible, portable, and can be applied to most of the SRM drive systems. The simulation results and experimental results represent that the torque ripple can be effectively suppressed in real‐time by the proposed novel control method.

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Comparative analysis of Hysteresis Current Control and Direct Instantaneous Torque Control of Switched Reluctance Motor

Cited by 13 publications

References 7 publications

Predictive Current Control for Switched Reluctance Motor Based on Local Linear Phase Voltage Model

Predictive Current Control for Switched Reluctance Motor Based on Local Linear Phase Voltage Model

Torque-Enhanced Phase Current Detection Schemes for Multiphase Switched Reluctance Motors with Reduced Sensors

Torque ripple suppression of switched reluctance motor by segmented harmonic currents injection based on adaptive fuzzy logic control

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