IPMSM control regime for a hybrid-electric vehicle application

The paper discusses the influence of driving cycles on the design optimization of permanent magnet synchronous machines. A bi-objective design optimization is presented for synchronous machines with V-shaped buried magnets. The machine length and the loss energy over a given driving cycle are defined as objectives. A total of 14 parameters defining geometry and winding layout are chosen as design parameters. Additionally some constraints like speed-torque-requirements and minimal stray field bridge widths are set. The optimization problem is solved using 2D finite element analysis and a highperformance differential evolution algorithm. The analyses are performed for the ARTEMIS driving cycle due to the more realistic driving behavior in comparison to the most commonly used New European Driving Cycle. Furthermore, a reference design optimization against the rated point loss energy is presented. The results show a much better performance of the driving cycle optimized machines in comparison to the rated point optimized machines in terms of the cycle-based loss energy. Loss savings depend strongly on the machine length and are approximately in between 15 % and 45 %.

show abstract

“…3. Further explanations can be find in [6] and [7]. Other strategies include more loss components and aim at minimizing the total losses (e.g.…”

Section: B Basic Equations and Maximum Torque Per Amperementioning

confidence: 98%

Driving cycle-based design optimization of interior permanent magnet synchronous motor drives for electric vehicle application

Gunther

Ulbrich

Hofmann

2014

2014 International Symposium on Power Electronics, Electrical Drives, Automation and Motion

View full text Add to dashboard Cite

show abstract

“…The direct open-loop algorithm method is based on experimental or FEA LUTs that store the relationship between the torque setpoint and the maximum allowable flux-linkage with the dq-axis current references [52], [53]. Fig.…”

Section: Direct Open-loop Algorithm With Experimental Lutsmentioning

confidence: 99%

Review of Flux-Weakening Algorithms to Extend the Speed Range in Electric Vehicle Applications With Permanent Magnet Synchronous Machines

et al. 2023

View full text Add to dashboard Cite

This article reviews Flux-Weakening (FW) algorithms for Permanent Magnet Synchronous Machines (PMSMs), focusing on the automotive sector, especially in electric and hybrid electric vehicles. In the past few years, the spread of Electric Vehicles (EVs) has improved the technology of electric machines and their control to achieve more compact and competitive solutions. PMSMs are the most widespread electric machines used in EVs thanks to their high-power density and potential operation at constant power range during high speed. Such high speed implies a high electromotive force. An FW technique is mandatory to reduce the electromagnetic flux generated by the electric machine due to the voltage limits of the traction inverter and the energy source. This article classifies and analyses the state-of-the-art FW control strategies by comparing their main advantages and drawbacks. The Vector Current Control (VCC) method that regulates the modulus of the applied voltage is the most common one in the literature thanks to i) its robustness to parameter modification and model unsureness, ii) low computational complexity, and iii) high dynamic response and control stability.

show abstract

“…Al-Najdi [19] gives a hint that voltage dip ride through the motor can be analysed through its capability curves, though no detailed analytical and mathematical explanation of the capability curve is discussed in this paper. Capability curves or current locus diagram for PMSM are presented in [20,21], where the performance of the motor under maximum torque per Ampere (MTPA) and maximum torque per flux (MTPF) operating condition is analysed by keeping the dc link voltage same at different torque and speed. Conditions that need to be satisfied to run the motor drive at same torque and speed during a large sustained dip in dc link voltage are not addressed in [20,21].…”

Section: Introductionmentioning

confidence: 99%

“…Capability curves or current locus diagram for PMSM are presented in [20,21], where the performance of the motor under maximum torque per Ampere (MTPA) and maximum torque per flux (MTPF) operating condition is analysed by keeping the dc link voltage same at different torque and speed. Conditions that need to be satisfied to run the motor drive at same torque and speed during a large sustained dip in dc link voltage are not addressed in [20,21]. With the growing popularity of synchronous reluctance motor (SYNRM) as an alternative to IM and PMSM [22,23], an analysis for voltage dip immune SYNRM drives is of utmost importance.…”

Section: Introductionmentioning

confidence: 99%

Analysis and implementation of a new method to retain the original speed and torque of synchronous reluctance motor during sustained voltage dip

Ghosh

Das

Bhuvaneswari

2019

IET Electric Power Applications

View full text Add to dashboard Cite

This study presents the operation of a synchronous reluctance motor drive under a sustained voltage dip condition while being connected to a weak grid. In the presence of an input voltage dip, motor may not be able to produce sufficient torque and maintain its original speed. A new technique is proposed in this study to maintain the desired reference torque and speed during a sustained voltage dip. The proposed technique is realised by evaluating mathematically the motor's allowable voltage dip margin corresponding to an operating point pertaining to a particular torque and speed in the current locus diagram of the motor. With prior knowledge of the voltage dip margin for every operating point in the current locus diagram, it would be possible to retain the same reference torque and speed by moving to a new operating point, which can be with lesser or greater i d as compared to the initial operating point, in case a voltage dip greater than the tolerable margin occurs. To start with, voltage dip margin has been derived theoretically and the operation of the motor is investigated by deliberately introducing a voltage dip. The proposed methodology has been verified through simulations and experiments in this study.

show abstract

IPMSM control regime for a hybrid-electric vehicle application

Cited by 11 publications

References 9 publications

Driving cycle-based design optimization of interior permanent magnet synchronous motor drives for electric vehicle application

Driving cycle-based design optimization of interior permanent magnet synchronous motor drives for electric vehicle application

Review of Flux-Weakening Algorithms to Extend the Speed Range in Electric Vehicle Applications With Permanent Magnet Synchronous Machines

Analysis and implementation of a new method to retain the original speed and torque of synchronous reluctance motor during sustained voltage dip

Contact Info

Product

Resources

About