Decoupled self-tuning PI controller for an idling stop system applied to scooters

Chen, Pin-Yung; Chang, Sheng-Yuan; Chen, Rongshun

doi:10.1007/s12239-017-0066-9

Cited by 1 publication

(3 citation statements)

References 23 publications

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“…On the other hand, PM machines are becoming popular for ISGs due to their higher efficiency and higher power density [10]- [22]. With dq-axis voltage commands as feedback for field-weakening on interior permanent magnet synchronous motor (IPMSM) in generating mode, the simulation results show that the proposed starter and alternator control module can provide good dc bus voltage (42V) during a worst-case step load condition at 6000rpm [10].…”

Section: Introductionmentioning

confidence: 99%

“…The researches in [18], [21], and [22] focus on ISGs for scooters with idling stop. The six-step voltage control method is used to generate good fixed dc-link voltage [21].…”

Section: Introductionmentioning

confidence: 99%

“…However, the study does not explain generating mechanism by the six-step voltage operation. For reducing size of ISG, the research in [22] uses a rare-earth PM for the outer rotor type motor. Therefore, the engine is to be cranked (i.e.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

“…The researches in [18], [21], and [22] focus on ISGs for scooters with idling stop. The six-step voltage control method is used to generate good fixed dc-link voltage [21].…”

Section: Introductionmentioning

confidence: 99%