Mobile Air Defence Platform — Pedestal Motor Control & Radar Frequency Feed

A leading Turkish air defence systems manufacturer selected TEDEG Defence for a next-generation mobile platform. The system comprises a pedestal mounted on a tactical truck chassis, a radar group and fire-control electronics. Two subsystems were critical: pedestal motion control on the azimuth and elevation axes, and an isolated, stable 400 Hz supply for the radar and fire-control electronics.

In the previous configuration, the motor drive and the static frequency converter came from two separate foreign suppliers. In the field this caused the following problems:

• EMI/EMC conflict: PWM switching noise from the motor drive degraded the harmonic purity of the radar supply, and MIL-STD-461F tests kept raising issues. Because the conflict sat between two manufacturers' products, ownership of the fix was unclear.
• Long lead times: both products came with long, hard-to-predict delivery times, leaving the programme schedule dependent on the suppliers.
• Cost and currency risk: foreign-currency pricing made long-term contract planning difficult.

The customer wanted a matched pair of systems from a single manufacturer.

TEDEG R&D treated the two products as one system from the outset: the motor drive's switching noise and the frequency converter's output quality were addressed within the same EMI/EMC filtering approach, and both units were customised to the platform's cabling and communications architecture.

Because the motor drive and frequency converter were designed together around a common EMI/EMC filtering topology, the interference that had troubled the previous set-up was dealt with at the design stage rather than in the field. Both units were developed to meet MIL-STD-461F requirements as a pair.

• Single domestic supplier: one point of contact for design, integration, test support and after-sales service.
• More predictable schedule: with engineering and production in Türkiye, change requests and deliveries can be followed closely.
• Reduced currency exposure: domestic supply made long-term contract planning easier.
• Platform-specific tuning: the pedestal control algorithm was set up for the platform's own dynamics.

The project became one of the references showing that TEDEG can deliver motor control and frequency conversion under a single systems-engineering approach.