Efficiency improvement evaluation of non-sinusoidal back-EMF PMSM machines using field oriented current harmonic injection strategy

Kshirsagar, Parag; Krishnan, R.

doi:10.1109/ecce.2010.5617988

Cited by 19 publications

(14 citation statements)

References 15 publications

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“…In [7,8] a modification to Park transformation is described that allows the transformation to be implemented for non-sinusoidal machines. The modification introduces a set of variables that compensate the variations resulting from standard Park transformation for accurate field orientation.…”

Section: Introductionmentioning

confidence: 99%

“…These research papers focus on the implementation of the modified transformation and use PI controllers to control rotor velocity and stator currents. PI and PID controllers are often used in BLDC motor control (see [7][8][9]), however, these types of controllers lack the robustness needed for many practical applications due to their poor performance to parametric variations and presence of disturbances. Other methodologies that have been used recently in speed control of BLDC motors are fuzzy-based controllers [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Nested High Order Sliding Mode Controller with Back-EMF Sliding Mode Observer for a Brushless Direct Current Motor

2020

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This work presents a nested super-twisting second-order sliding mode speed controller for a brushless direct current motor with a high order sliding mode observer used for back electromotive force (back-EMF) estimation. Due to the trapezoidal nature of the back-EMF, a modified Park transformation is used in order to achieve proper field orientation. Such transformation requires information from the back-EMF that is not accessible. A second-order sliding mode observer is used to estimate the back electromotive forces needed in the modified transformation. Sliding mode control is known to be robust to matched uncertain disturbances and parametric variations but it is prone to unmatched perturbations that affect the performance of the system. A nested scheme is used to improve the response of the controller in presence of unmatched disturbances. Simulations performed under similar conditions to real-time experimentation show a good regulation of the rotor speed in terms of transient and steady-state responses along with a reduced torque ripple.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nested High Order Sliding Mode Controller with Back-EMF Sliding Mode Observer for a Brushless Direct Current Motor

2020

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“…The advantage of proposed method rather than [12] is that the flux weakening for constant-power highspeed mode can be achieved by injecting a negative d-axis current into the control system, just like PMSMs. Similar attempts have been proposed in [16][17][18]. Two major issues of mentioned methods are high computational complexity and dependency on the motor parameters in which most of them are open loop and do not include the variations of motor parameters into control law.…”

Section: Control Of Nonsinusoidal Pmbl Motor With Minimum Torque Ripplementioning

confidence: 99%

“…The input vector includes the stator voltage components of V and V ; the output vector includes and stator current components. The matrices , , , and and functions Φ( , ) and ( , ) in (18) are defined in Appendix A. Moreover, the following conditions must be met for this observer:…”

Section: Design Of Full-order Sliding Mode Observer For Nonsinusoidalmentioning

confidence: 99%

Sensorless Control of Nonsinusoidal Permanent Magnet Brushless Motor Using Selective Torque Harmonic Elimination Control Method Based on Full-Order Sliding Mode Observer

Niasar

Ahmadi

Edjtahed

2016

Advances in Power Electronics

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Nowadays, due to excellent advantages of permanent magnet brushless (PMBL) motors such as high efficiency and high torque/power density, they are used in many industrial and variable-speed electrical drives applications. If the fabricated PMBL motor has neither ideal sinusoidal nor ideal trapezoidal back-EMF voltages, it is named nonideal (or nonsinusoidal) PMBL motor. Employing conventional control strategies of PMSMs and BLDCMs lowers the efficiency and leads to unwanted torque ripple, vibration, and acoustic noises. Moreover, in many applications to reduce the cost and enhance the reliability of drive, sensorless control techniques are used. This paper proposes a novel sensorless control for a nonsinusoidal PMBL motor with minimum torque ripple. To develop smooth torque, the selected torque harmonic elimination strategy is employed. Furthermore, to estimate the rotor position and speed, a novel full-order sliding mode observer is designed. Proposed observer estimates the position and speed of motor from standstill to final speed. The proposed observer is robust to uncertainty of harmonic contents in phase back-EMF voltage and able to run the motor from standstill with closed-loop control scheme. The capabilities of torque ripple minimization and sensorless strategies are demonstrated with some simulations.

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“…In Liao (2010), a harmonic equation of the motor is established and a harmonic injection method that can suppress the higher harmonic of current is presented. In Kshirsagar & Krishnan (2010), when the iron loss of the motor exceeds the rating value, the author analyses the harmonic injection's influence on the efficiency of the system, and he also shows the advantages of using non-sinusoidal current injection in lower frequency range which is compared with sinusoidal current injection.…”

Section: Introductionmentioning

confidence: 99%

A harmonic injection SPWM method for the high-responsive PMSM control system

Wang

Hao

et al. 2015

International Journal of Electronics

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In a permanent magnet synchronous motor (PMSM) control system, usually, the phase voltage instruction is limited independently to prevent a three-phase pulse width modulation (PWM) wave from overflowing. This method decreases the efficiency of the bus voltage and causes voltage vector direction errors. To solve these problems, we propose a harmonic injection sinusoidal pulse-width modulation (SPWM). This method uses harmonic injected sinusoidal PWM to improve the utilisation ratio of the bus voltage, and consequently improve system performance. In this paper, we analyse the problem in terms of potential difference. The simulation results show that the proposed method can increase the utilisation ratio of the bus voltage up to 15.4%, and the voltage vector mode obtained with the proposed algorithm is larger than that obtained with the conventional one. The method with harmonic injection consequently improves current response, without affecting voltage vector accuracy. The experiment results validate the proposed method.

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Efficiency improvement evaluation of non-sinusoidal back-EMF PMSM machines using field oriented current harmonic injection strategy

Cited by 19 publications

References 15 publications

Nested High Order Sliding Mode Controller with Back-EMF Sliding Mode Observer for a Brushless Direct Current Motor

Nested High Order Sliding Mode Controller with Back-EMF Sliding Mode Observer for a Brushless Direct Current Motor

Sensorless Control of Nonsinusoidal Permanent Magnet Brushless Motor Using Selective Torque Harmonic Elimination Control Method Based on Full-Order Sliding Mode Observer

A harmonic injection SPWM method for the high-responsive PMSM control system

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