The electrification of construction machinery, such as excavators or dump
trucks, has recently been gaining popularity due to numerous technical,
economical, and ecological benefits. At HPE, concepts to replace hydraulic
excavators with electrical counterparts are investigated.
Electric excavators use a battery as their energy source. According to the
excavator’s battery state of charge (SoC), the battery voltage can vary substantially
around its nominal value (up to ±25%). To boost this voltage up
to a constant DC-link voltage for a motor drive (step-up ratio: ≈ 2 . . . 6),
a highly compact and efficient boost converter is required. In addition,
bidirectional power transfer is required to enable energy recuperation.
In this project, you will design, build and commission the prototype system
for a given boost converter design. This includes the design of the
PCB, the magnetic components (inductors), the cooling system as well the
implementation of converter control functions. Thereafter, you will test,
verify and validate the system at multiple operating points.
The electrification of construction machinery, such as excavators or dump trucks, has recently been gaining popularity due to numerous technical, economical, and ecological benefits. At HPE, concepts to replace hydraulic excavators with electrical counterparts are investigated. Electric excavators use a battery as their energy source. According to the excavator’s battery state of charge (SoC), the battery voltage can vary substantially around its nominal value (up to ±25%). To boost this voltage up to a constant DC-link voltage for a motor drive (step-up ratio: ≈ 2 . . . 6), a highly compact and efficient boost converter is required. In addition, bidirectional power transfer is required to enable energy recuperation. In this project, you will design, build and commission the prototype system for a given boost converter design. This includes the design of the PCB, the magnetic components (inductors), the cooling system as well the implementation of converter control functions. Thereafter, you will test, verify and validate the system at multiple operating points.
Simon Beck, ETL F12, beck@hpe.ee.ethz.ch
Simon Beck, ETL F12, beck@hpe.ee.ethz.ch
50% Hardware Design
10% Simulation
30% Testing
10% Theory
50% Hardware Design 10% Simulation 30% Testing 10% Theory
Interest and knowledge in power electronic systems, Interest and knowledge in hardware
design, Working language: English/German
Interest and knowledge in power electronic systems, Interest and knowledge in hardware design, Working language: English/German
BoostConverterContinued.pdf
