Improved Self-Sensing Speed Control of IPMSM Drive Based on Cascaded Nonlinear Control
Abstract
:1. Introduction
2. Nonlinear Modeling of IPMSM
2.1. IPMSM Dynamic Model
2.2. VSI Fed IPMSM
3. Control Strategies
3.1. Nonlinear Cascaded Control Structure
3.1.1. Intelligent Speed Control Loop
- a
- If and are NH, then the value across the output is NH.
- b
- If and are NH and PH, respectively, then the value across the output is ZE.
- c
- If and are PH and ZE, respectively, then the value across the output is PH.
- d
- If and are ZE and NH, respectively, then the value across the output is NH.
3.1.2. Finite Set Current Predictive Control of IPMSM
Convergence Analysis
3.2. Self-Sensing Speed Mechanism
Stability Analysis
4. Results and Discussion
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Parameters | Symbols | Values |
---|---|---|
Sampling Time | 1 μs | |
DC-link | 500 V | |
Stator resistance | 2.5 Ω | |
Pole pairs | P | 3 |
d-axis Inductance | 15.025 mH | |
q-axis Inductance | 30.175 mH | |
Moment of inertia | J | 0.00365 kgm2 |
Flux | 0.5283 Wb | |
Damping coefficient | B | 0.0011 Nm·s |
Inverter on Legs | Voltage Vector | Switching States |
---|---|---|
= 0 | 0 0 0 | |
= −− | 0 0 1 | |
= −+ | 0 1 0 | |
= − | 0 1 1 | |
= | 1 0 0 | |
= − | 1 0 1 | |
= + | 1 1 0 | |
= 0 | 1 1 1 |
NH | NM | NL | ZE | PL | PM | PH | |
---|---|---|---|---|---|---|---|
NH | NH | NH | NH | NH | NM | NL | ZE |
NM | NH | NH | NH | NM | NL | ZE | PL |
NL | NH | NH | NM | NL | ZE | PL | PM |
ZE | NH | NM | NL | ZE | PL | PM | PH |
PL | NL | NL | ZE | PL | PM | PH | PH |
PM | NL | ZE | PL | PM | PH | PH | PH |
PH | ZE | PL | PM | PH | PH | PH | PH |
Case | Representation | Details | Parameter Values |
---|---|---|---|
1 | Self-sensing speed convergence response with reference speed step variation | = [0, 500, 600, 800, 700, −700, −330, 300] rpm at [0 0.09, 0.3, 0.5, 0.8, 1.2, 1.5, 1.7] s → [3, 7] Nm at [0.7] s | Nominal |
2 | Self-sensing drive torque response with load step variation | = [0, 3, 8, 11, 14, 5, 1] Nm at [0, 0.09, 0.2, 0.35, 0.55, 0.7, 0.85] s = [800, −800] rpm at [0.5] s | Nominal |
3 | Self-sensing sinusoidal speed convergence response | rpm | varied ↑ ↑ |
Parameters | PI-PI | PI-MPCC | FLC-MPCC |
---|---|---|---|
Dynamics | Good | Good | Remarkable |
Speed Steady-state Error | Minimum | Moderate | Moderate |
Speed Ripples | Larger | Moderate | Small |
Speed Overshoot(%) | 0.02 | 0.018 | 0.0 |
Speed Settling time(s) | 0.1219 | 0.1205 | 0.118 |
Torque Response | Slow | Medium | Fast |
Torque Ripple | Larger | Moderate | Small |
Switching Frequency | Fixed | Variable | Variable |
Current Harmonics | Higher | Moderate | Lower |
Control Efficiency | Average | Good | Remarkable |
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Usama, M.; Kim, J. Improved Self-Sensing Speed Control of IPMSM Drive Based on Cascaded Nonlinear Control. Energies 2021, 14, 2205. https://doi.org/10.3390/en14082205
Usama M, Kim J. Improved Self-Sensing Speed Control of IPMSM Drive Based on Cascaded Nonlinear Control. Energies. 2021; 14(8):2205. https://doi.org/10.3390/en14082205
Chicago/Turabian StyleUsama, Muhammad, and Jaehong Kim. 2021. "Improved Self-Sensing Speed Control of IPMSM Drive Based on Cascaded Nonlinear Control" Energies 14, no. 8: 2205. https://doi.org/10.3390/en14082205