Adaptive Voltage Feedback Controllers on the Non-Salient Permanent Magnet Synchronous Machine

Flux-Weakening Control of Dual Three-Phase PMSM Based on Vector Space Decomposition Control

“…If neglecting the mutual coupling voltages between phase-ABC and -XYZ, the DT-PMSM can be treated as two single three-phase machines with coupling voltages between two sets of three-phase windings. Then the conventional FW control based on the voltage magnitude feedback for single three-phase PMSM [16,[24][25][26][27][28]46] can be extended for DT-PMSM, which is demonstrated in Fig. 2.…”

“…To extend the power and speed operation range which is constrained by a given DC-link voltage, the FW control is usually adopted to weaken the air-gap flux by utilization of [14][15][16]. Based on the conventional decoupling vector control with dq-axis current regulation for a single three-phase machine, the strategies of FW control can be classified into feed-forward [17][18][19][20][21][22] and feedback methods [16,[23][24][25][26][27][28][29][30][31][32]. The FW control of the feedforward method has the advantage of excellent dynamic performance; however, the accuracy of FW current from the feed-forward method relies heavily on the accuracy of machine parameters, such as the flux-linkage and inductances, which might vary with loads and temperature [18,33,34].…”

“…To solve this issue, the feedforward and feedback methods can be combined in a hybrid method [35,36]. The feedback in the FW control of feedback method can be the voltage magnitude error [16,[24][25][26][27][28], the voltage error before and after the pulse width modulation (PWM) module [31,32], or the error between the PWM period and the calculated active time for the synthesis of voltage vector command [37]. The first method is applicable under both linear PWM and over-modulation regions due to alterable voltage reference; however, the latter two methods are specifically designed for the over-modulation region and thus cannot achieve a FW operation in the linear PWM region.…”

Designing practical fuzzy gain scheduling controllers for micromobility applications of permanent magnet synchronous machines

“…Employing an adaptation mechanism to scale the output of the FLC according to the speed error is also widely preferred to improve the dynamic performance. [22][23][24] In Wang and Zhu, 24 steady-state voltage ripple analysis is conducted using an experimental setup, and the components that contribute to the voltage ripples are identified. Also, the authors revealed the main sources of the voltage ripples in different operating regions for the vector control of the PMSM.…”