Sigmadrive

Overview

Sigmadrive

The Sigmadrive family of AC and DC motor controllers have been developed for a  wide range of electric vehicle applications. The range spans power ratings of 24V, 175A to 80V 650A in three package sizes, each intended to give optimal price and performance.

The universal nature of the design enables the same hardware to be easily configured to work as either traction, pump, or steering controller. Furthermore, in total, four different motor technologies are supported:

1. AC induction
2. DC series
3. DC separately excited
4. DC permanent magnet

IMS Technology
Insulated Metal Substrate (IMS) technology is fully utilized to provide state-of-the-art thermal performance and exceptional reliability. The innovative design means there is no internal cabling or inter-board connections and direct heatsinking for all components and terminals.

Control
There is a great deal of flexibility offered by several specialist programmable parameters, thereby ensuring smooth comfortable, control under all conditions. Assured gradient control comes via selectable hill-hold and restraint functions, which are designed to hold the vehicle steady even when no drive signal is present.

CANbus Communication

CANbus communication provides a safe and reliable electrical connection method to gauges, programmers and between controllers themselves. Additionally, the CANbus can be used to load software updates into the Sigmadrive, meaning a vehicle can be upgraded to include new and improved functions.

product ranges

Sigmadrive - AC Induction Motor Controllers

Sigmadrive AC Induction Motor Controllers are tuneable to any AC motor, and uses advanced, real-time high resolution current measurement combined with Sequential Phase Control (SPC) techniques to provide, smooth highly efficient control of torque and speed. SPC provides enhanced performance over other control techniques and is particularly power efficient with highly dynamic loads. The Sigmadrive AC induction motor controller can be quickly set up to provide maximum torque, efficiency and best performance characteristics. The Sigmadrive AC Induction motor controllers are available in traction and pump configurations for the power and voltage ratings shown below. Dual traction applications for all Sigmadrive variants can easily configured using 2 individual traction controllers linked by CANbus.

Sigmadrive - SEM

Sigma Drive Separately Excited Motor (SEM) controllers offer the same advanced technology and design features of the Sigmadrive AC controllers to provide a range of flexible, power efficient traction speed controllers with an exceptional power to size ratio, revolutionary low profile and excellent thermal characteristics.

Sigmadrive - Series

Sigmadrive Series motor controllers are available in traction, pump, and an innovative dual pump and power steer assist variants. Sigmadrive series controllers offer excellent continuous current ratings and comprehensive protection from all overcurrent fault conditions due to the high-resolution current measurement. Sigmadrive series controllers also offer protected contactor drivers with inbuilt coil suppression. The dual pump models offer a high-power output for the main lift pump, and a secondary output for the smaller, power steering assist pump.

Sigmadrive – PM

Sigmadrive PM motor controllers offer smooth and predictable speed control of permanent magnet traction motors across a wide range of system voltages and power ratings. The Sigmadrive PM controllers share all of the advanced design features of the Sigmadrive family such as IMS technology, high-resolution current measurement, CANbus communications and extremely low heat dissipation. The Sigmadrive PM range can also be configured for dual traction applications, and includes dedicated Electric Power Steer Assist controllers.