The qIPM (Intelligent Power Module) is QPT’s flagship product, designed to enable high-frequency Gallium Nitride (GaN)-based electric motor drives, powering the motor with a pure sine wave.
Our technology integrates cutting-edge components to deliver unmatched system efficiency, significantly reducing Total Cost of Ownership (TCO) and enhancing performance of your electric motor driven system. For the first time enabling high-frequency GaN-based motor drives of up to 75kW.
Whether you’re in HVAC, industrial motor drives, or electric vehicles (EVs), qIPM offers a modular solution that reduces energy losses, lowers maintenance costs, and extends equipment life.
SYSTEM Benefits
QPT’s solution can improve system efficiency by up to 10%, particularly in applications where motors frequently operate at variable loads. This translates into direct operational cost reductions, but the savings go beyond just energy:
Lower Maintenance Costs
The sine wave output reduces eddy currents meaning the motor experiences less wear, minimising the need for costly repairs and unplanned downtime.
Extended Motor Lifespan
The clean sine wave output to the motor reduces stress on the insulation and bearings, meaning that motors last longer, leading to fewer replacements.
Reduction in Noise, Vibration and Harshness (NVH)
The clean sine wave output significantly reduces noise, vibration, and harshness (NVH) in electric motors. This results in quieter, smoother operation, less wear on components, and a more comfortable environment for operators.
Simplified Cooling Requirements
qIPM’s efficiency reduces heat generation, allowing for smaller, more cost-effective cooling systems—particularly important in EVs and other space-constrained applications.
Improved power density
GaN-based motor drives can be up to 20x smaller in volume, meaning you can have much more powerful integrated motor drives. This can significantly redulce installation costs.
No screened cables
The sine wave output means that expensive screened cables are not required between the drive and the motor.
Integrated sine wave filter
Existing sine wave filters are bulky and expensive because of the relatively low-frequency of operation of existing drives. The qIPM module includes our small “qFilter” technology which provides the integrated, low-loss sine wave output to the motor. Due to the high-frequency of operation these filters are very small and lightweight.
Product Highlights
High Switching Speeds: Leveraging GaN transistors that switch 20x faster than Silicon Carbide (SiC), qIPM enables higher power density and greater efficiency, especially at lower power ranges, where traditional systems struggle.
High-power: Our initial modules are for 7.5kW applications. However, we are building a 75 kW demonstrator for the EV market which will be available in 2025.
Thermal and EMI Management: With advanced packaging to manage thermal challenges, qIPM ensures minimal Electromagnetic Interference (EMI), allowing for smooth operation even at GHz-level frequencies caused by our 1ns transistor switching speeds.
Modular Design: Each qIPM includes essential modules— including the half-bridges, integrated high-speed gate drivers, low-loss sine wave output filters and high speed sensing modules - designed to work seamlessly together, providing a compact, modular solution for custom and high-power applications.
qIPM technical specifications
Datasheet is available under NDA. Please contact us for further details.
qIPM Architecture
The diagram shows a simplified block diagram of the qIPM architecture:
qHB: Half-Bridge switching module
qDrive: Ultra-fast gate driver for precise control, handling dv/dt of around 550V/ns or 550kV/us
qFilter: Integrated low-loss output filter delivering clean sine wave output
qSense: High-frequency current and voltage sensing module
ZEST: Novel transformer for handling high-frequency operation
qControl: Internal controller managing system performance
CORE APPLICATION AREAS FOR OUR TECHNOLOGY
High power integrated motors
Not only does QPT technology cut the power requirements of electrical motors, it also solves a major industry problem of the size of VFD with a VFD design that is around 20 times smaller than today’s VFDs.
Electric Vehicles
Electric Vehicles or EV are an ideal market for our technology especially as it enables energy re-capture via regenerative breaking.
Heating, ventilation and air-conditioning (HVAC)
Heating, Ventilation and Air Conditioning (HVAC), uses a huge number of electric motors that are being driven with sub-optimal efficiency.
Robotics, Servos, Welding & Industrial Automation
Productivity can be improved by using qModules to control servo motors because they settle faster so more moves per hour can be achieved.