1 option
High Dynamic Response Full Order Stator Flux Linkage Observer for IPMSM Drives McMaster Universtiy
- Format:
- Book
- Conference/Event
- Author/Creator:
- Dhale, Sumedh Bhaskarrao, author.
- Conference Name:
- WCX SAE World Congress Experience (2022-04-05 : Detroit & Online, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2022
- Summary:
- This paper presents an improved full-order stator flux-linkage observer for the Permanent Magnet Synchronous Machine (PMSM) drives employed for electromagnetic power conversion in the Electric Vehicle (EV) powertrain. The parameters of a typical PMSM are influenced by constantly changing operating conditions leading to significant errors when torque estimation is performed using an a-priori parametric model, also known as a current model. This issue is usually addressed using a voltage model-based flux-linkage estimation. However, this approach suffers from inaccuracy due to the inverter-generated disturbances. The significance of this disturbance also grows as the operating speed reduces. A conventional full-order flux-linkage observer relies upon a current model for low operating speed and gradually shifts to the voltage model as the machine accelerates. Thus, the flux-linkage, and hence the torque estimation suffers from the errors in the parameter knowledge for low-speed conditions. The presented observer consists of an improved closed-loop voltage model which benefits from a hybrid nonlinear corrective action based on the sliding-mode observation principle, which yields finite time convergence while maintaining a low chattering effect. Moreover, the estimation process is restricted within a feasible estimation period attributed to the differential nature of the controller voltages and measured currents. By virtue of these improvements, the proposed flux-linkage observer boasts high robustness towards the errors in parameter information across a wide operating speed range. The performance of the proposed flux-linkage observer is studied for fast dynamic change in torque at low-speed conditions in a comparative analysis with a conventional open-loop type Gopinath style estimator and a reduced-parameter sensitivity closed-loop observer
- Notes:
- Vendor supplied data
- Publisher Number:
- 2022-01-0738
- Access Restriction:
- Restricted for use by site license
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.