| 1. |
- Bakas, Panagiotis, et al.
(författare)
-
Hybrid Topologies for Series and Shunt Compensation of the Line-Commutated Converter
- 2016
-
Ingår i: 8th International Power Electronics and Motion Control Conference - ECCE Asia, IPEMC 2016-ECCE Asia. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509012107 ; , s. 3030-3035
-
Konferensbidrag (refereegranskat)abstract
- This paper presents two concepts for enabling the operation of a line-commutated converter (LCC) at leading power angles. The concepts are based on voltage or current injection at the ac side of an LCC, which can be achieved in different ways. However, this paper focuses on the voltage and current injection by series-connected full-bridge cells that can generate voltages that approximate ideal sinusoids. Thus, hybrid configurations of an LCC connected at the ac side in series or in parallel with fullbridge cells are presented. Finally, these hybrid configurations are compared in terms of voltage and current rating.
|
|
| 2. |
- Bessegato, Luca, et al.
(författare)
-
Control of Modular Multilevel Matrix Converters Based on Capacitor Voltage Estimation
- 2016
-
Ingår i: IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), 2016. - : IEEE. - 9781509012107 ; , s. 3447-3452
-
Konferensbidrag (refereegranskat)abstract
- In this paper, a control method based on capacitor voltage estimation is applied to the modular multilevel matrix converter topology. By using such control method, capacitor voltage measurement is not needed in the high-level control. A state-space model of the converter and the control method is developed. Lyapunov stability theory is used to prove global asymptotic stability of the internal dynamics of the converter. Simulation results showing the behavior of the converter in steady-state and dynamic situations are presented.
|
|
| 3. |
- Hu, Yifei, et al.
(författare)
-
Design and optimization procedure of a single-sided linear induction motor applied to an Articulated funiculator
- 2016
-
Ingår i: 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509012107 ; , s. 3096-3102
-
Konferensbidrag (refereegranskat)abstract
- The paper describes the design of a single-sided linear induction motor (SLIM) intended for an Articulated Funiculator (AF). A procedure is proposed where first an analytical design is carried out to obtain a preliminary geometry. The analytical design is based on approximate equivalent circuits under constrained conditions. In the second step a two-dimensional finite element method (2D-FEM) analysis is performed to validate the accuracy of the analytical models. The modification and optimization are conducted to acquire the best design.
|
|
| 4. |
- Jin, Lebing, et al.
(författare)
-
Analysis of power losses in power MOSFET based stacked polyphase bridges converters
- 2016
-
Ingår i: 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia). - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509012107 ; , s. 3050-3055
-
Konferensbidrag (refereegranskat)abstract
- The ability to accurately predict power semiconductor losses is essential for converter design and can provide a reference for thermal management. Based on a stacked polyphase bridges converter, a simplified but accurate loss model is used in this paper to calculate the power losses of power MOSFETs and experimentally verified. A special focus of the analysis is the ringing loss calculation since it is inevitable in the switching process of power MOSFETs. In addition, this paper presents a comparison of power losses between Si MOSFET and GaN FET based converters by using the analytical model.
|
|
| 5. |
- Sadik, Diane-Perl, et al.
(författare)
-
Humidity testing of SiC power MOSFETs
- 2016
-
Ingår i: 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509012107 ; , s. 3131-3136
-
Konferensbidrag (refereegranskat)abstract
- Humidity and outdoor application are a challenge for Silicon (Si) and Silicon Carbide (SiC) applications. This paper investigates the effect of humidity on SiC power MOSFET modules in a real application where no acceleration factors such as pressure or high temperature are applied. Since SiC devices can operate at higher temperature than Si, the high-temperature acceleration factor may be obsolete. Moreover, the humidity might be more critical when the temperature inside the converter enclosure and modules housing is varying with daily temperature variations and weather constraints in harsh environments. The breakdown voltages of the humidity-exposed modules are monitored regularly over a extended period of time in order to detect any increase of leakage current which indicates humidity-induced degradation. After 630 hours, the modules operated outdoor presented an increased leakage current at 1.2 kV and over the whole range of applied voltage.
|
|
| 6. |
- Velander, E., et al.
(författare)
-
Analysis of short circuit type II and III of high voltage SiC MOSFETs with fast current source gate drive principle
- 2016
-
Ingår i: 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509012107 ; , s. 3392-3397
-
Konferensbidrag (refereegranskat)abstract
- The Silicon Carbide (SiC) MOSFET is considered to be the leading candidate for future 1.7 kV and 3.3 kV switches in 2-level voltage source converters (VSC) up to 2 MW. For those converters, short circuit (SC) in the dc-link loop can occur due to a number of reasons, e.g. faulty semiconductor modules, faulty gate drivers (GDs), or electro-magnetic interference (EMI). Termination of such SCs is important in order to protect components and reduce the damage in the converter box. This paper presents a new short circuit protection scheme based on a universal current-source GD principle without dedicated hardware components. The performance of the design is evaluated for SC in the dc-link loop under load conditions, called type II and type III. Moreover, measurement results are presented using the proposed GD connected to a 1700 V 300 A SiC MOSFET tested during SC type II and III at two different dc-link stray inductances, 30 nH and 100 nH, and at two different temperatures, 25 °C and 125 °C. The conclusions are that the proposed scheme is able to terminate both SC type II and III with fast reaction time, with low energy dissipation, with a margin of about 15 times below the destructive level for dc-link voltages and load currents up to 1050 V and 300 A respectively.
|
|
| 7. |
- Zhang, Hui, et al.
(författare)
-
Evaluation of winding arrangements in electric machinery for modular electric drives
- 2016
-
Ingår i: 2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016. - : IEEE conference proceedings. - 9781509012107 ; , s. 2820-2825
-
Konferensbidrag (refereegranskat)abstract
- This paper considers different winding connection configurations for a modular electric drive based on series/ parallel connected polyphase bridges converter. Suitable stator winding connection configurations are identified to adapt to the converter topologies considered. Particular focus is put on the post-fault performance. Selected winding layouts are evaluated using 2D-FEM simulations.
|
|
