-
1
1
DEMO TITLES
PMSM (Permanent Magnet Synchronous Motor) drives Case I: CSI
drives PMSM
Case II: 2-Level VSI drives PMSM without filter Case III:
2-Level VSI drives PMSM with filter
Case IV: 3-Level VSI drives PMSM without filter
Author: Tshibain Tshibungu Simsmart Technologies Inc.
Brossard, Quebec Canada
Software used: Simsmart Engineering Suite V6 (ES V6)
-
2
2
1. OBJECTIVE AND DESCRIPTION
The following test cases are done in order to test and validate
the power electronics components from the Engineering suite V6
Electrical library and analog components. A PMSM has the following
parameters:
A DC source supplies the motor through an inverter. At t = 0 s
the reference speed is set to 150 rad/s and reverse to -100 rad/s
at t = 0.25 s. The maximum torque allows is 12 Nm.
2. PROCESSES DATA
Case I: CSI (Current- sourced Inverter) drives PMSM.
The IGBTs without snubbers
Speed controller
Hysteresis control
The diagram block control of CSI
-
3
3
Case II: 2-Level VSI (Voltage- Sourced Inverter) drives PMSM
without filter
The IGBTs without snubbers
Currents controllers
For q axis
For d axis
Speed controller
Switching frequency
Case III: 2-Level VSI drives PMSM with filter
The IGBTs are without snubbers
Currents controllers
For q axis
For d axis
Speed controller
LC filter with damping resistor
Switching frequency
-
4
4
Case IV: 3-Level VSI (NPC) drives PMSM without filter
Diode with snubber
MOSFETs with external snubber
Same controllers as case II
The diagram block control of VSI
3. SIMULATION PARAMETERS
The simulation was run in time domain with sample time of
-
5
5
4. PROCESSES REPRESENTATION IN ES V6
Case I: CSI drives PMSM.
Case II: 2-Level VSI drives PMSM without filter
-
6
6
Case II: 2-Level VSI drives PMSM with filter
Case IV: 3-Level VSI (NPC) drives PMSM without filter
-
7
7
6. ENGINEERING SUITE V6 RESULTS
All cases
Case I: CSI drives PMSM.
-
8
8
Case II: 2-Level VSI drives PMSM without filter
-
9
9
Case II: 2-Level VSI drives PMSM with filter
-
10
10
Case IV: 3-Level VSI (NPC) drives PMSM without filter
-
11
11
Conclusion
The following conclusions can be made:
the impact of filter on the 2-level voltage VSI,
the 3-level voltage without filter in motor current,
the torque doesnt exceed the maximum allowed (12 Nm).
CSI drives PMSM has the advantage of quick torque response
versus VSI drives PMSM but poor in harmonics.
-
12
12
7. REFERENCE BOOKS
1. Power electronics. Converters, applications and design, 2nd
edition.
Mohan / Underland / Robbins.
2. Electric Motor Drives. Modeling, Analysis, and Control. R.
Krishnan.
3. High Performance Control of AC Drives with Matlab/Simulink
Models. H. Abu-Rub, A. Iqbal, J. Guzinski.
