An EV inverter, also called a traction inverter or motor controller, converts the DC (Direct Current) voltage stored in an electric vehicle’s battery into three-phase AC (Alternating Current) power to drive the electric motor. It controls torque, speed, regenerative braking, and protection functions in real time.
For OEM engineering teams, the inverter plays a central role in defining vehicle performance, efficiency, and system integration.
IRP Systems develops high-performance EV inverters, ISO 26262 compliance, supporting scalable integration across electric vehicle platforms.
Contact IRP Systems to discuss your EV inverter requirements →
How an EV Inverter Works?
Modern EV inverters rely on Field-Oriented Control (FOC), which enables precise control of motor torque and efficiency across the full operating range. FOC separates torque and flux components of the motor current, allowing smooth response and optimized performance.
The control system continuously processes signals such as motor position and current measurements to adjust switching patterns in real time, ensuring stable operation, high efficiency, and accurate torque delivery.
EV Inverter Key Specifications IRP Dynamic Family EV Inverter
- Operating Voltage: 44–110V
- Peak Power: 1.5–25 kW
- Control Algorithm: Field-Oriented Control (FOC)
- Sealing Level: IP67
- Safety Standard: ISO 26262
- Motor Types Supported: PMSM, EESM, Axial Flux, BLDC
Power Semiconductors Technologies: IGBT, SiC, and Open Winding
The performance of an EV inverter is strongly influenced by the choice of power semiconductor technology.
IGBTs (Insulated-Gate Bipolar Transistor) have been the standard EV inverter power switch for over a decade, reliable and cost-effective, but limited in switching frequency and efficiency at high temperatures.
SiC (Silicon Carbide) MOSFETs switch faster and with lower losses than IGBTs. They achieve inverter higher efficiencies and enable more compact thermal designs. SiC adoption is extending from premium passenger vehicles into two-wheeler and light EV platforms.
In addition to semiconductor selection, inverter architecture plays a key role. IRP Systems implements an Open Winding topology, which enables more flexible control of the motor and can improve performance across different operating conditions.
For OEMs, these design choices directly impact efficiency, thermal management, and overall powertrain behaviour.
IRP Dynamic: IRP Systems' Software-Defined EV Inverter Platform
It combines advanced control capabilities, system-level optimization, and support for different vehicle architectures to meet OEM requirements.
Advanced Control Platform
IRP Systems implements advanced Field-Oriented Control (FOC) algorithms that enable precise torque control, efficient operation, and smooth driving behaviour across the full operating range.
Control parameters such as torque response, regenerative braking behaviour, and drive profiles can be configured to match specific vehicle requirements.
Configurability and Integration
The platform is designed to support efficient integration into OEM vehicle architectures.
It enables:
- flexible configuration of control parameters
- compatibility with multiple motor types
- integration with vehicle control systems via CAN communication
- support for different vehicle segments and use cases
System-Level Optimization
IRP Systems focuses on optimizing overall powertrain performance, including:
- efficiency across operating conditions
- thermal behaviour and system stability
- consistent torque delivery
These capabilities allow OEMs to tailor performance without requiring major hardware changes.
Advanced Driving Features
- Regenerative Braking: Software-configurable regen profiles recover kinetic energy on every deceleration event, extending real-world range on urban duty cycles
- Hill Hold: Prevents rollback on inclines by holding motor torque implemented in software, no hardware actuator required
- Walk Assist: Low-speed controlled motor output for push-mode operation in pedestrian environments
- Soft Start / Anti-Jerk: Torque ramp-up profiling for smooth, predictable acceleration from standstill
Ready to evaluate the EVVER Dynamic EV inverter for your platform?
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Advance Driving Features
- Regenerative Braking: Software-configurable regen profiles recover kinetic energy on every deceleration event, extending real-world range on urban duty cycles.
- Hill Hold: Prevents rollback on inclines by holding motor torque implemented in software, no hardware actuator required.
- Walk Assist: Low-speed controlled motor output for push-mode operation in pedestrian environments.
- Soft Start / Anti-Jerk: Torque ramp-up profiling for smooth, predictable acceleration from standstill.
Frequently Asked Questions
What does an EV inverter do?
An EV inverter converts DC battery power into three-phase AC to drive the electric motor. It controls motor torque and speed in real time, enables regenerative braking, and manages protection functions such as overcurrent, overvoltage, and thermal limits.
What is the difference between an EV inverter and a DC-DC converter?
An EV inverter converts high-voltage DC into three-phase AC for the traction motor. A DC-DC converter reduces high-voltage DC to lower voltage levels (such as 12V or 48V) for auxiliary systems. Both are power electronics components but serve different functions in the vehicle architecture.
What is Field-Oriented Control (FOC)?
Field-Oriented Control (FOC) is a control method that enables precise regulation of motor torque and efficiency across the full operating range. It is widely used in modern EV inverter systems to ensure smooth response and optimized performance.
Why is SiC replacing IGBT in EV inverters?
Silicon Carbide (SiC) devices enable higher switching efficiency, improved thermal performance, and more compact inverter designs compared to traditional IGBT solutions. Their adoption is increasing across different electric vehicle segments.
What is ISO 26262 and is it required for EV inverters?
ISO 26262 is the international standard for functional safety in automotive systems. It is required for many regulated markets and increasingly expected by OEMs. EV inverters are typically developed according to ISO 26262 processes, with safety levels depending on the application.
What is Open Winding technology?
Open Winding is an inverter architecture that enables independent control of both ends of the motor windings. This allows greater flexibility in control strategies and can improve performance across different operating conditions.
Can the same EV inverter work across multiple vehicle types?
EV inverter platforms can be designed to support different vehicle types, depending on voltage, power requirements, and system integration. Configurable control strategies can help adapt performance across multiple applications. IRP Systems offers modular and adaptable EV inverters across all multiple vehicle platforms from 2-Wheelers, 3-Wheelers and 4-Wheeler commercial and passenger vehicles.
IRP Systems works with OEMs building the next generation of electric vehicles. Contact us to discuss your EV inverter platform requirements.
