Multilevel Highspeed Inverter MLI 55 / 55+ 2.0

BorgWarner Inc.

  • Multilevel Highspeed Inverter MLI 55 / 55+ 2.0 has DC supply voltage up to 850 V DC
  • Our inverter was developed for fuel cell air compressors and electric turbochargers
  • Nominal phase current up to 55 ARMS
  • Stator frequency up to 2,500 Hz
  • PWM switching frequency up to 46kHz

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Multilevel Highspeed Inverter MLI 55 / 55+ 2.0 descriptions

  • Turbo speed and system costs under control. Our multi-level technology enables us to keep very high motor and generator speeds of up to 150,000 rpm safely under control.
  • The control technique and high PWM frequencies reached result in considerably lower rotor losses in the electrical machine, thus leading to a significant reduction in system costs.
  • Multilevel Highspeed Inverter family undergoes double inspection in the production.

Key features

  • Compact design
  • High power density
  • Liquid-cooled, inlet temperature < 70°C (under full load conditions)
  • Interface to higher-level control system (CANopen/J1939)
  • Field-proven sensorless speed and torque control
  • Temperature monitoring interface
  • Digital Signal Processor with high control performance
  • Integrated EMI filter
  • DC voltage measurement and supervision
  • Three phase current measurements
  • Three phase voltage measurements
  • IP67 enclosure

MLI Technology

Drivetech MLI Technology
  • Drivetek has been applying multilevel technology to high-speed inverters (MLI) for e-motors spinning up to 180'000rpm since 2012. MLIs are used for air compressors, electric turbochargers and heat recovery applications
  • MLI technology provide cost advantage using standard IGBTs
  • Through the high PWM frequency and additional voltage level, lower pulsations of the magnetic field can be achieved, this leads to significantly lower rotor losses (eddy currents)
  • Due to the series connection of the switches, the voltage on each switch is only half of the DC Link voltage (e.g. 900V DC Link can be realized using a 600V class IGBT)
  • Multilevel technology allows significantly more complex control and error handling than 2-level architectures such: a) additional degrees of freedom, b) avoid 'dangerous' power-off states in case of errors and c) control of the 'N' point
  • To date, Drivetek has delivered several thousand units for a wide range of mobile fuel cell applications worldwide.
  • Drivetek has implemented all the tools to safely control multilevel inverters.
  • Drivetek's proprietary QUASAR SW platform and Q-Control SW allow more than 300 parameters to be managed freely.

Application areas

  • MLI is developed for fuel cell air compressors and electric turbochargers
  • Cars
  • Industries
  • Electrical Grid connection
  • We include state of art testing in our production processes
  • Incoming inspection
  • Automated PCB function testing, more than 100 tests, 100% test coverage
  • Thermal burn-in test
  • SW Programming
  • EOL test
  • Electrical interfaces
Drivetek MLI 55 2.0 Electrical Interfaces

Contact us!

  • By pooling our experience, knowledge, and technology, we are able to meet your requirements with precision.
Type of input current DC
Brand BorgWarner
Type of Cooling Liquid Cooled
Max Input Voltage (in V) 850
Min Input Voltage (in V) 80
Max Current (in A) 55
Electronic Control Interface CAN, CAN J1939
Max Stator Frequency (in Hz) 2500
Max Switching Frequency (Hz) 46000
Ingress Protection Rating IP67
Manufacturing Readiness (MRL) 0
Technology Readiness (TRL) 0
Max Ambient Temperature (in °C) 85
Min Ambient Temperature (in °C) -40
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99% of all inquiries get answered within 5 days. Your inquiry will be sent immediately to the right person within the vendor organisation.

By ticking the checkbox, you consent to the collection and storage of the data you have provided for the purpose of contacting and answering your request in accordance with our Privacy Policy. You can revoke your consent at any time by sending an email to bye-bye@hyfindr.com.

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