ELECTRIC VEHICLE (EV) CONTROLS

SEDEMAC has been developing a suite of products for OEMs participating in the EV story. SEDEMAC provides complete control and power electronics solution-set for 48V electric vehicle (EV) and hybrid electric vehicle (HEV) systems. The portfolio includes motor controllers, battery management systems, and DC/DC converters.


SEDEMAC’s sensorless motor controls offering, Weber, is a product-series of Field Oriented Control (FOC) enabled BLDC motor controllers. These controllers operate two control loops; the inner control loop controlling machine currents for optimal torque generation, and the outer control loop controlling torque reference and field weakening logic. Weber also has a regenerative braking logic for energy efficient operation of the vehicle.

Weber comes in two variants – Weber-S; is suitable for lower power (~2 kW) applications, while Weber-D; is designed for mid power (~10 kW) applications.

FEATURES

  • Unique sensorless BLDC controls at zero-speed (patent pending)
  • Unlike traditional sensorless algorithms which operate only at high motor speeds, SEDEMAC’s motor controllers can provide full starting torque from zero-speed. This eliminates the need for high end encoders
  • State-of-the-art motor control FOC algorithms such as MTPA (Maximum Torque Per Ampere), field weakening, and regenerative braking, provide high efficiency power conversion, and smooth torque output

SPECIFICATIONS

Weber S:
  • Input: 48V nominal voltage
  • Output: 60A line RMS continuous current
  • Field Oriented Control enabled
  • Compatible for hybrid two-wheeler applications with built-in engine controls module
Weber D:
  • Input: 48V nominal voltage
  • Output: Designed for 200A line RMS continuous current
  • Field Oriented Control enabled
  • Double PCB architecture with separate mother boards and aluminium substrate power board

PRODUCT COMPARISON

DOWNLOAD

Flyer


The battery management segment is catered by Ursa BMS, intended for 48V lithium ion batteries. It has modern State of Charge (SOC) estimators. Ursa supports up to 14 cells in series. It monitors cell voltages, battery pack temperature, and battery pack current to enable passive balancing, battery protection and battery state estimation.

FEATURES

Modern state of charge estimators based on Kalman filters in BMS, provide a significant improvement in SOC estimation as compared to traditional algorithms such as coulomb counting or terminal voltage-based state estimation

SPECIFICATIONS

  • Designed for 48V lithium battery packs
  • Supports up-to 14 cells in series
  • Kalman filter based State of Charge (SOC) estimation
  • Passive balancing with 300-ohm shunt

DOWNLOAD

Flyer

Got it!
We use cookies to enhance your experience. By continuing to visit this site you agree to our use of cookies. More info