Ariane 6 equipment- Fault Tolerant Motor Control

Ariane 6 equipment: Fault Tolerant Motor Control

Aerospace systems become more and more electrical. Former hydraulic and mechanics actuators are gradually replaced by electrical actuators. The power electronics and the motor driving critical actuators shall be highly reliable, even if a single failure occurs. WATT&WELL developed a fault tolerant power stage, which is single failure proof.

Ariane 6 equipment- Fault Tolerant Critical Control

The power electronics driving critical actuators in launchers required real time, hot redundant controllers. Traditional platform with 2 controllers (a nominal and a redundant) cannot react fast enough to ensure control continuity. WATT & WELL developed a controller platform achieving these high-performance constraints, using innovative technologies.

Picture of Critical Fault Tolerant
NASA Hardening

Ariane 6 Second Stage Motor Pumps Controller: Radiation hardening

Radiation Hardening is necessary for an equipment that goes into outer space since exposed to ionizing particles. Radiation can affect equipment in severe ways and these effects need to be counteracted to ensure the good functioning throughout a mission. The CMTP is part of a launcher which’s mission lasts for 2 hours which implies that it is affected by SEE. Our equipment is made radiation tolerant to SEE thanks to our agile electronics solutions.

Ariane 6 Second Stage Motor Pumps Controller

For its customer ArianeGroup, WATT&WELL is developing a motor driver and its embedded controller for a motor pump unit located in the second stage of the future Ariane 6 launcher. This highly critical motor driver is not only fault tolerant to any single failure of the electronics, but also radiation tolerant.

4.444
HiCurrent-Motor-Driver

HiCurrent Motor Driver

Development of a full custom motor driver and its control loops for a brushless DC motor.

Customized Nar Motion for Valve Actuation

For its customer ArianeGroup, WATT&WELL is developing a motor driver and its embedded controller for a motor pump unit located in the second stage of the future Ariane 6 launcher. This highly critical motor driver is not only fault tolerant to any single failure of the electronics, but also radiation tolerant.

BVGC
Magnetic-coupler

Magnetic Coupler Feasibility Study

For its customer MBDA, WATT & WATT studies the way to transfer contactless data and electrical power through a metallic sleeve plus an air gap. Imagine a magnetic coupler able to undergo high vibration level and keep its efficiency during operation.

Reversible DC/DC Converter

WATT & WELL designed a reversible DCDC converter for power-by-wire application. The new on-board power network of airplanes is rated at +-270 VDC. The embedded equipment and batteries are rated for a 28 VDC bus. This converter enables to interface efficiently these two buses, in both power directions.

Reversible-DCDC-converter
Softless-Brushless-Motor-Drive_agile

Softless Brushless Motor Drive

For its customer Zodiac Aerospace, WATT & WELL designed a full custom motor inverter and its control dedicated to airplane wipers. Old wipers actuators were fully mechanical (dc motor with crank rod mechanisms). In the more electric airplane, these actuators are brushless DC motor based with a control law for shaft angle.

Motor Control Expertise

The variety of applications of permanent magnetic synchronous machines, PMSM, is consistently increasing in the last years. Automotive, aviation and aerospace are examples of industries where electrical motors are assuming important roles. Depending on applications, a motor requires different controls. To respond specific needs, Watt & Well implement different control strategies: from simple six-step to field-oriented control, to open loop speed control to torque, speed and position control loops, using sensors as resolvers, encoders or even sensorless control with position estimation.

Banc-Moteur-watt and well