# PWM Signal Generation for EV Motor Control & VCU Drive
> Explore PWM techniques for EV motor control, featuring SVPWM, VCU architecture, and 3-phase inverter design for BLDC/PMSM systems by Dataic Motor Systems.

Tags: ev-motor-control, pwm-generation, vcu-architecture, bldc-motor, svpwm, power-electronics, inverter-circuit, embedded-systems
## PWM Signal Generation for EV Motor Control
Technical presentation on Pulse Width Modulation (PWM) via Vehicle Control Unit (VCU) for Dataic BLDC/PMSM motor systems.

## VCU Architecture & Motor Specs
*   **Microcontroller:** ARM Cortex-M4/M7.
*   **PWM Channels:** 6 (3-phase complementary).
*   **Switching Frequency:** 8–20 kHz.
*   **Motor Power:** 1000W – 8000W at 48V/60V/72V.
*   **Maximum Torque:** Up to 80 Nm (Peak 120 Nm).

## Space Vector PWM (SVPWM)
*   Maximizes DC bus utilization (86.6% vs 75% for standard SPWM).
*   Reduces Total Harmonic Distortion (THD) in output current.
*   Improves torque ripple performance.

## Hardware & Protection
*   **Inverter:** 3-Phase circuit utilizing SiC MOSFET / IGBT modules with 400V DC bus.
*   **Dead-Time:** 2–5 µs gap prevents inverter shoot-through.
*   **Protection:** Over-current latch, NTC over-temperature monitoring, and Under-Voltage Lockout (UVLO).

## Firmware & Validation
*   **Firmware:** Field Oriented Control (FOC) loop running at 16 kHz on ARM Cortex-M7.
*   **Testing:** Verified 16 kHz frequency with < 200 ns rise/fall time and 3.5 µs dead-time.
*   **Results:** Efficiency >94% achieved with current THD < 5%.
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