Critical Motor Drive Applications
Critical systems are those where failure leads to important human and financial costs and are present in many applications such as aerospace, utilities, transportation systems and defense. Electric motor drives are among those critical systems and are used as components for cooling systems (HVAC), actuators, energy storage (flywheel) and instrumentation (gyroscopes). Fault-tolerant algorithms are used in critical applications in order to extend normal operation and reduce risk of failure. Energy-efficient algorithms are primarily used in critical applications in order to maximize system autonomy where energy source is limited.
This IP has been invented and developped by the Canadian Space Agency and it is used under License by Alizem.
NEW! Article presented by Concordia University at IEEE PEDES2019 Conference (click here)
MOTOR CONTROL ALGORITHM AND KEY FEATURES
- Optimal management of phase current distribution lowering losses and enhancing maximum achievable torque and speed by 20% leading to lower motor rating, weight, space and cooling requirements
- Ripple-free torque leading to reduced mechanical stress, velocity fluctuation, noise and higher reliability and tracking accuracy in servo applications
- Automatic fault recovery from a phase winding failure and/or phase voltage/current saturation
- Capability to provide critical information regarding motor health to master system (M2M, machine-to-machine)
- Easy-to-use application programming interface (API) for quick and safe operation including multiple debug modes for power stage, transducer and system protection verification for early bug detection
BENEFIT #1: 20% LOSSES REDUCTION BY TORQUE RIPPLE SUPPRESSION (source)
BENEFIT #2: ROBUST TO INVERTER/MOTOR PHASE FAULTS (source)
SCHEMATIC - (c) Copyright Canadian Space Agency 2014.
SIMULATION AND EXPERIMENTAL RESULTS FROM CONCORDIA UNIVERSITY (Canada) - APRIL 2018
Simulation results on OPAL-RT OP4510 with phase fault:
Experimental results on 3kW motor with phase fault:
ON-LINE TECHNICAL DOCUMENTATION
- Technology Summary - Increased Ripple-Free Torque or Speed in BLDC Motors Operating under Current or Voltage Saturation
- Engineering Report - Electronic Commutator of servomotors under current and voltage limits or phase failure
- IEEE Trans. on Control Systems - Optimal and Fault-Tolerant Torque Control of Servo Motors Subject to Voltage and Current Limits
- IEEE Trans. on Control Systems - Ripple Suppression of BLDC Motors with Finite Driver/Amplifer Bandwidth at High Velocity
- IEEE Trans. on Control Systems - Fault-Tolerant Torque Control of BLDC Motors
- Aerospace More Electric Aircraft : Why Aerospace Needs Power Electronics?
- Automotive: Hybrid and Electric Vehicles
- Power generation
- Industrial Robotics
CANADIAN SPACE AGENCY WEBSITE
CSA Intellectual Property Management and Technology Transfer - News
- Detailed description of the technology
VIDEO: To know more, check this great testimonial from John Maris, President and Founder at Marinvent.
- Alizem signs MOU with OPAL-RT in the field of electric motor edge AI technology
- Québec Government invests 40M$ in More Electric Aircraft (SA2GE)
- Alizem signs MOU with Mission and Safety-Critical Software Certification Leader Marinvent
- Alizem releases its new Embedded Motor Control Software IP for Critical Applications
- Alizem signs with the Canadian Space Agency to offer new embedded Motor Control Software IP
- Embedded.com - Canadian Space Agency algorithm makes motor control more efficient
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