Abstract
PWM-controlled power converters are increasingly used in the More Electric Aircraft (MEA). However, Electromagnetic Interference (EMI) is introduced due to the high dv/dt and di/dt slew rates of their fast-switching power devices. Though EMI is conventionally mitigated by adding filters that can be often heavy and bulky, a better solution would be to address it at source, in order to achieve higher power density systems. This paper investigates how soft-switching topologies can attenuate EMI by addressing it at source. Specifically, the auxiliary commutated pole inverter (ACPI) is employed to actively control the dv/dt of the output voltage. The effect this control has on the output voltage frequency spectrum is examined with analytical models. Subsequently, a control scheme is developed for regulating the output voltage to the desired waveform and simulation results are presented. A 1.4-kW ACPI phase-leg prototype is utilized for proof of concept. Reductions in the harmonic content of the output voltage are observed in the range of 1 to 20 MHz. It is expected that the ACPI can benefit from better EMI performance and can contribute to the overall effort of achieving high power density systems for MEA applications.
Original language | English |
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Title of host publication | 2015 IEEE Energy Conversion Congress and Exposition (ECCE) |
Place of Publication | Piscataway, N.J. |
Publisher | IEEE |
ISBN (Print) | 978-1-4673-7151-3 |
DOIs | |
Publication status | Published - 2015 |
Externally published | Yes |
Event | Energy Conversion Congress and Exposition (ECCE), 2015 IEEE - Montreal, QC, United States Duration: 20 Sep 2015 → 24 Sep 2015 |
Conference
Conference | Energy Conversion Congress and Exposition (ECCE), 2015 IEEE |
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Country | United States |
City | Montreal, QC |
Period | 20/09/15 → 24/09/15 |
Keywords
- electromagnetic interference
- switches
- logic gates
- voltage control