Integrated starter generator: need of an optimal design and control approach. Application to a permanent magnet machine

Friedrich, Guy; Chédot, Laurent; Biedinger, J.-M.; Macret, P.

doi:10.1109/iemdc.2005.195923

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…in [2] provides the optimization procedure for the design of PMA C ISA, but only the Interior PM (lPM) ma chine is considered due to its excellent field weakening range, while the induction machine candidate was left out. Cai in [3] presents a comparison of electrical machines for integrated starter-alternator applications: however his study focused on the 42V which favors the IPM machine.…”

Section: Introductionmentioning

confidence: 99%

Electric machine design and selection for General Motors e-Assist Light Electrification Technology

Jurkovic

Morgante

Rahman

et al. 2012

2012 IEEE Energy Conversion Congress and Exposition (ECCE)

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Abslracl-The integrated starter generator replaces conven tional starter and alternator with one electrical machine handling both functions. StartlStop functionality, vehicle launch ass istance and higher spee d transient power supplementing enhances the vehicle performance at the lower fuel consumption rate. This functionality requires the electrical machine to provide high starting and launch assistant torque in motoring mode and relatively high power capability over the wide speed range for battery charging. The overall cost of the system is the underlining concern and crucial part of the design optimization.This paper focuses on advantages of induction machines in automotive industry and an approach to design a cost effective electrical machine for belted starter-alternator application. De sign optimization of the induction machine is described to achieve desired performance including; rotor bar count, solid conductor (bar winding) vs. stranded winding design, rotor bar sbape opti mization and finally performance maps for the electrical machine including both, predicted and measured results. Thermal study of the machine is also presented as well as the NVU consideration in the design selection.

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Section: Introductionmentioning

confidence: 99%

Electric machine design and selection for General Motors e-Assist Light Electrification Technology

Jurkovic

Morgante

Rahman

et al. 2012

2012 IEEE Energy Conversion Congress and Exposition (ECCE)

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An Innovative Constant Voltage Control Method of PMSM-Type ISG Under Wide Engine Speed Range for Scooter With Idling Stop

Huang

Chen

et al. 2019

IEEE Access

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The integrated starter generator (ISG) is used for an idling-stop scooter, which can effectively reduce both air pollution and fuel consumption during idle periods. The ISG, that is made using permanent magnet synchronous motor (PMSM), should provide enough torque for engine cranking, which causes the output voltage of a three-phase rectifier from the ISG to be higher than the battery voltage (12V) in generating mode. Hence, the output voltage control of the ISG cannot be performed by a conventional boost operation. This paper proposes a constant voltage control method for the PMSM type ISG in generating mode to generate a 12V dc-link voltage over a wide speed range of the engine. First, a phasor diagram is used to explain the principle of how the controlling of phase voltage lagging behind its back-EMF can achieve power generation. Furthermore, the relationships among generating dc-link voltage, generating power, phase voltage lagging angle, and current angle are derived for developing the control methodology. Due to the small lagging phase angles of the ISG in generating mode from light to rated load, a dc-link voltage controller with a feedforward angle control for the light load is adopted to yield voltage control with or without connected 12V battery. In addition, a dc-link current feedforward module is proposed to enhance the voltage controller without the 12V battery. Consequently, the voltage variation under step load change is further reduced to nearly 0V on the test bench and on a 150cc scooter. Finally, a DSP-based ISG drive is implemented to verify the effectiveness of the proposed method on both the test bench and the 150cc scooter. INDEX TERMS Integrated starter generator (ISG), idling stop, six-step voltage operation, phasor analysis, PMSM, scooter.

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Reducing the complexity of thermal models for electric machines via sensitivity analyses

Assaad¹,

Benkara²,

Friedrich³

et al. 2017

2017 IEEE Energy Conversion Congress and Exposition (ECCE)

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Integrated starter generator: need of an optimal design and control approach. Application to a permanent magnet machine

Cited by 6 publications

References 39 publications

Electric machine design and selection for General Motors e-Assist Light Electrification Technology

Electric machine design and selection for General Motors e-Assist Light Electrification Technology

An Innovative Constant Voltage Control Method of PMSM-Type ISG Under Wide Engine Speed Range for Scooter With Idling Stop

Reducing the complexity of thermal models for electric machines via sensitivity analyses

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