Comparative Analysis between Direct Torque Control and v/f Control for Electric Vehicles

Saha, Sanketh; Nishanth, M.; Praveen, T.; Rajalekshmi, N; Prabu, T.

doi:10.1109/icccnt49239.2020.9225541

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…The measured pole voltages with relation to VSI's negative rail are V a0 , V b0 , and V c0 , and are reported as (7). Based on pole voltages, resultant discrete VVs formation is provided by (8) and depicted in Figure 1b with possible eight switching combinations.…”

Section: Modelling Of S-pmsm Drivementioning

confidence: 99%

“…The major benefits of DTC‐functioned motor drive are simple and reliable to offer direct control over flux and torque. In DTC operation, the final voltage vector (VV) is chosen to minimise torque and flux ripples [8]. The flux and torque error outputs of hysteresis controllers, and position of the flux vector are used to build the switching table.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of enhanced direct torque control for surface‐mounted permanent magnet synchronous motor drive operation

Meesala

Udumula

Nizami

et al. 2023

IET Power Electronics

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Direct torque control (DTC) is one of the most prominent control techniques used by permanent magnet synchronous motor (PMSM) drives in industry applications. Nevertheless, the presence of hysteresis controllers and inaccurate voltage switching table in traditional DTC results in higher torque and flux ripple. This study proposes an enhanced DTC functioned Surface‐mounted PMSM (S‐PMSM) drive with mitigation of torque and flux ripple. The operation relies on generating the reference voltage vector (VV) in a stationary reference frame, which supports control of torque and flux without hysteresis controllers. The reference VV generation is simple and does not affect control robustness. The position of reference VV in a sector is used to build the voltage vector (VV) switching table. As a result, the application of nearest discrete VV to reference VV produces optimal torque and flux control. Moreover, redundant switching combinations of null VV are effectively used for possible minimization of switching frequency of two‐level voltage source inverter (VSI) supplied S‐PMSM drive. Therefore, proposed DTC gains improved S‐PMSM drive response along with switching frequency reduction. In dSPACE‐RTI 1104 platform, experimental response of S‐PMSM drive under various operating conditions have been depicted to highlight the proficiency of proposed DTC in comparison with existing DTC.

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Section: Modelling Of S-pmsm Drivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of enhanced direct torque control for surface‐mounted permanent magnet synchronous motor drive operation

Meesala

Udumula

Nizami

et al. 2023

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…The outer loop and inner loop were implemented to regulate the DC-link voltage (Figure 2) and the battery discharge current through the average current mode control, respectively. To regulate the reference speed, for different motors, different control methods can be used, such as two-loop control (inner current loop and outer speed loop), direct torque control (DTC), field-oriented control (FOC), model predictive control (MPC) or V/f scalar control [22][23][24].…”

Section: System Description and Operationmentioning

confidence: 99%

A Unified Switched Nonlinear Dynamic Model of an Electric Vehicle for Performance Evaluation

et al. 2023

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The advanced modeling and estimation of overall system dynamics play a vital role in electric vehicles (EVs), as the selection of components in the powertrain and prediction of performance are the key market qualifiers. The state-space averaged model and small-signal transfer function model are useful for assessing long-term behavior in system-level analysis and for designing the controller parameters, respectively. Both models take less computation time but ignore the high-frequency switching dynamics. Therefore, these two models could be impractical for the development and testing of EV prototypes. On the other hand, the multi-domain model in available simulation tools gives in-depth information about the short-term behavior and loss analysis of power electronic devices in each subsystem, considering the switching dynamics in a long computation time. In this paper, a general mathematical framework for the dynamical analysis of complete EVs is presented using a unified, switched nonlinear model. This equation-based model runs faster than the available module-based simulation tools. Two other models, namely the time domain state-space averaged model and frequency domain small-signal transfer function model, are also developed from the switched nonlinear model for the analysis with less computation time. The design and performance of an EV with two different motors and its controllers are evaluated using the general mathematical framework.

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“…This control has numerous advantages such as high performance, the ability to regulate flux, voltage, vector current, and the ability to produce high torque at low speeds. Vector control has a good response to any variation in speed and load and is more constant than the scalar, which has a less good response [10].…”

Section: Introductionmentioning

confidence: 99%

Static and Dynamic Performance of Vector Control on Induction Motor with PID Controller: An Investigation on LabVIEW

Muntashir

Purwanto

Sumantri

et al. 2021

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A three-phase induction motor is often used in everyday life because of its high reliability. However, it is associated with some disadvantages, including difficulties in maintaining constant speed during load changes and speed regulation due to the decoupled system. Therefore, this study aims to adjust the three-phase induction motor control to become a separate amplifier DC motor by setting the vector control using the IFOC method, which changes the coupled to the decoupled system. The speed settings are equipped with a PID controller where its parameters, which are obtained using Ziegler Nichols, produce speed output with fast research time and small steady-state errors. This research was conducted to observe and analyze the performance of a controller based on the IFOC approach with a PID controller at speed differences, with static and dynamic conditions in the entire speed working area. In the first stage of the research, simulation is carried out with static conditions, namely changes in speed variations throughout the work area (low speed to high speed), the next stage is a simulation with dynamic conditions, which is to provide changes in the value of the load torque when the system is operating. The simulation result carried out with LabVIEW shows a response time of 1.13 ms, a settling time of 9.9 ms, and a steady error of 0.4% at the 500 Rpm set point. It also indicated dynamic characteristics with a recovery time of 4.9 ms at the 300 Rpm set point. When operated at low speed, IFOC with PID controller has a stable response. But In dynamic conditions, the use of a PID controller is considered unsuitable. This is because the PID controller is less fast and less robust in responding to the system when conditions change in the value of the load torque.

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Comparative Analysis between Direct Torque Control and v/f Control for Electric Vehicles

Cited by 9 publications

References 21 publications

Development of enhanced direct torque control for surface‐mounted permanent magnet synchronous motor drive operation

Development of enhanced direct torque control for surface‐mounted permanent magnet synchronous motor drive operation

A Unified Switched Nonlinear Dynamic Model of an Electric Vehicle for Performance Evaluation

Static and Dynamic Performance of Vector Control on Induction Motor with PID Controller: An Investigation on LabVIEW

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