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Constant torque curves of tested IPMSM. (a) As a function of id and Im. (b) As a function of id and ψs.
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![Fig. 12. Experimental hardware setup [22], [33]. (a) IPMSM coupled to...](profile/Khoa-Hoang-7/publication/282962919/figure/fig3/AS:619253245935620@1524652887595/Experimental-hardware-setup-22-33-a-IPMSM-coupled-to-dynamometer-via-torque_Q320.jpg)
In this paper, an online control method of interior permanent magnet synchronous machine (IPMSM) drives for traction applications considering machine parameter and inverter nonlinearities is presented. It is shown that the conventional technique using parameter information instantly extracted from premeasured parameter look-up tables (LUTs) only de...
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... ψ m (i q ). Based on Fig. 4, two general characteristics of IPMSM with parameter nonlinearities are outlined as follows Remark 1: For a demanded torque in the low-speed region, a number of possible combinations of dq-axis currents together with their relevant machine parameters shown in Fig. 3 can be utilized, Fig. 4(a). Although only one unique combination can ...
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... ψ m (i q ). Based on Fig. 4, two general characteristics of IPMSM with parameter nonlinearities are outlined as follows Remark 1: For a demanded torque in the low-speed region, a number of possible combinations of dq-axis currents together with their relevant machine parameters shown in Fig. 3 can be utilized, Fig. 4(a). Although only one unique combination can be employed to achieve the global MTPA operation, current magnitudes of this global MTPA point and the other combinations locating in the small segment around this global MTPA point (named as MTPA small segment) are almost similar (e.g. zooming of the 70Nm MTPA small segment). If the ...
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... 2: Under a demanded torque, the reduction of the stator flux magnitude via increasing of d-axis current, Fig. 4(b), results in a parabolic trendline for the current magnitude of which the minimum point is the global MTPA point, Fig. 4(a). Thus, the flux reference variation within the MTPA small segment results in almost similar current magnitude (e.g. zooming of the 70Nm MTPA small segments). This phenomenon is simply based on the general ...
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... 2: Under a demanded torque, the reduction of the stator flux magnitude via increasing of d-axis current, Fig. 4(b), results in a parabolic trendline for the current magnitude of which the minimum point is the global MTPA point, Fig. 4(a). Thus, the flux reference variation within the MTPA small segment results in almost similar current magnitude (e.g. zooming of the 70Nm MTPA small segments). This phenomenon is simply based on the general demagnetization characteristic of ...
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Citations
... S YNCHRONOUS machines, including permanent-magnet (PM) and synchronous reluctance machines (SyRMs), are increasing their share in industrial drives. For these machines, current-based vector control schemes have been conventionally used [1]- [4]. In saturable machines, the closed-loop current control becomes nonlinear, which has been considered in more recent works on current-vector control [5], [6]. ...
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$\mu \text{H}$
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