Electrification in the commercial-vehicle sector
The number of electric cars on the world’s roads is growing continually, with fully and partially electric drives becoming increasingly popular in the commercial-vehicle and passenger-transportation sector. This is unsurprising as the advantages of electric drives can offer direct cost benefits. BRUSA Elektronik AG identified this trend early on, and is now also offering its proven components in 750-volt versions. BRUSA components have been proven a thousand times over and as a further development of these, the new 750-volt products are ideal for use in commercial vehicles and applications demanding very high output performance.
Same power with less copper
Increasing the voltage reduces the currents with the performance remaining the same. Lower currents lead to a reduction of cable thicknesses and bending radii. This will directly result in weight and material savings -expecially with commercial vehicles of a certain length such as trucks or busses. For electric cars the 300 to 400-volt range has established itself as the standard. Thanks to the advancement in semiconductor technology, a doubling of operating voltage is unproblematic.
Electromagnetic compatibility
While the doubling of the voltage to 750 volts offers advantages, it is a challenge to control increased electric fields. To achieve optimal electromagnetic compatibility, BRUSA Elektronik AG developed the resonant SoftSwing® topology which is already used in its 400-volt components. This proven soft commutation minimizes switching loss while ensuring optimal efficiency and EMC values are achieved. This technology is particularly advantageous at high voltages and will improve efficiency, weight, size and therefore reduce the costs of the total system.
The following products will also be available for 750-volt applications:
Drive
HSM1-10.18.13-HV
The 750V version of the ten-pole hybrid synchronous motor now delivers a maximum voltage of 142kW and a maximum torque of 315Nm. Minimizing the proportion of permanent magnet ensures a high level of inherent safety. For optimal performance, use the drive together with the recently developed DMC537 inverter.
DMC517
The DMC517 is an ultra-compact, universal inverter which can be used to drive different motor types up to around 50kW. An ISU option is offered for integration in accordance with ISO26262 (ASIL-C).
DMC527
The DMC527 is a compact, universal inverter which can be used to drive different motor types up to around 100kW. An ISU option is offered for integration in accordance with ISO26262 (ASIL-C).
DMC537
The DMC537 is a compact, universal inverter which can be used to drive different motor types up to around 150kW. An ISU option is offered for integration in accordance with ISO26262 (ASIL-C). This inverter is ideal for use with the recently developed HSM1-10.18.13-HV drive.
DMC547
The DMC547 is a universal high-performance inverter which can be used to drive different motor types up to around 200kW. An ISU option is offered for integration in accordance with ISO26262 (ASIL-C).
Converter
BDC546
This bidirectional DC/DC converter was designed primarily for fuel-cell applications, functioning as the link between the fuel cells, HV battery and drive. Thanks to its wide voltage range, the BDC546 is ideal for use in high-voltage drive applications such as in fuel-cell busses. As a powerful DC fast charger, the BDC546 can also be used in test-bench applications or in combination with stationary transformers.
BSC618-24V
The BSC6 is the link between the HV side (e.g. fuel cells and traction battery) and the LV side (24V system). With a maximum output of 3.5kW, this converter can completely replace additional generators and even 24V batteries depending on the application.
BSC628-12V
The BSC6 is the link between the HV side (e.g. fuel cells and traction battery) and the LV side (12V system). With a maximum output of 3.5kW, this converter can completely replace additional generators and even 12V batteries depending on the application.
Energy
EVB1-660-40 750V
The liquid-cooled high performance 26.6kWh battery is designed specifically for high-performance applications. It delivers a discharge current of up to 400 amps and can be charged at a current of up to 200 amps.
NLG514
The 3.7kW charger is based on the proven NLG5 chargers and features extensive safety functions. The new 720V version is also available as an air-cooled and water-cooled version.
NLG667
The world’s first 22kW on-board fast charger is now available in a 750V version. The liquid-cooled fast charger performs impressively thanks to its unique power density without lacking any technical highlights (e.g. ISO15118, PLC) or extensive safety functions (e.g. galvanic isolation).
PDU274
This high-voltage distributor is specially designed for use with BRUSA system components. Safety functions such as interlock monitoring ensure the 750V system operates safely.
