Srm Drives

SRM drives have no permanent magnets and no rotor windings; all performance aspects are highly dependent on the driver's current modeling capabilities, switching strategies, and real-time control accuracy.

AURIC SRM drives are designed from a system-level perspective, going beyond simple power amplifiers. They focus on addressing torque ripple control, low-speed start-up stability, high-speed commutation accuracy, and reliable operation under high temperature and voltage fluctuations.

Current Control Architecture

Utilizes high-speed current sampling and closed-loop control

Precisely controls the conduction and turn-off angles of each phase

Supports a combination of chopper control and angle control

SRM torque = current × reluctance rate. Poor control leads to large torque fluctuations, high noise, and decreased efficiency.

The driver determines the usability of the SRM.

Power Devices and Heat Dissipation Technology

Industrial-grade IGBT/MOSFET modules

Independent phase power topology design

Thick copper PCB + low thermal resistance heat dissipation structure

Less prone to failure under high current surges

More stable operation under long-term full load

Commutation and Control Algorithm Differences

Adaptive commutation strategy, adaptable to different speed ranges

Optimized torque ripple suppression algorithm

Reduces low-speed crawling and howling issues

Not just able to rotate, but to rotate controllably, adjustablely, and for long-term use

Environmental Resistance

No risk of permanent magnet demagnetization

Can operate in high temperature, high dust, and high vibration environments

Wide voltage input, adaptable to grid fluctuations

Our products utilize a multi-layer PCB design, significantly reducing electromagnetic interference.

The power and control partitioning layout enhances stability.

Critical solder joints undergo 100% inspection.

Load aging tests are performed before shipment.

High batch consistency and low after-sales risk.

1.AURIC has long been involved in the development of switched reluctance motor (SRM) applications, possessing a deep understanding of magnetic circuit characteristics, torque formation mechanisms, and commutation logic. We don't produce general-purpose drives; we manufacture control systems optimized for SRM characteristics.

2.Many SRM projects fail not because of the motor itself, but mostly because of mismatch between the drive and the motor.

We can jointly optimize motor parameters and SRM drive control strategies based on actual operating conditions.

3.All SRM drives undergo load testing before leaving the factory.

Key power modules and control boards undergo zone testing.

Batch parameter consistency is controllable.

Reduce after-sales and field issues, avoiding hidden costs.

4.Supports OEM/ODM engineering collaboration.

Supports customization of control logic and interface methods.

Protection strategies can be adjusted according to application conditions.

Provides complete technical documentation and parameter specifications.

Export-grade professional packaging

Anti-static inner packaging to protect control circuits

Customized foam or cushioning structure to prevent vibration and impact

Reinforced outer carton, suitable for sea freight and long-distance transport

Reduces transport damage rate and minimizes delivery disputes

Flexible shipping options

Supports small-batch sample and bulk order shipments

Can deliver in batches according to project schedule

Compatible with multiple international logistics methods

Export experience and documentation support

Familiar with export procedures for motors and drive products

Can provide technical documents and test reports

Packaging and labeling meet international market requirements

Helps buyers reduce customs clearance and compliance risks

Provides parameter setting and debugging guidance

Engineers support drive and SRM motor matching

Long-term technical response, supporting project iterations

We prioritize the stable operation of equipment at your customer's site.

If your application environment has extremely high requirements for temperature, reliability, and maintenance cycles, SRM drives will be a more rational choice.

Contact AURIC for SRM motor and drive matching solutions.

The ASC20 series switched reluctance motor controller mainly consists of a main control board, a drive board, a display board, a power electronic main circuit, and control software.
The main control board adopts a new-type DSP chip as the core controller, paired with an FPGA for I/O expansion and circuit logic control. The drive board receives control signals from the main control board and converts them into drive signals for the IGBTs in the main circuit to regulate the main circuit's operation. The display board allows users to view the motor's operating data and parameter settings.
The controller features keyboard input functionality, enabling motor start/stop control and parameter configuration. It provides analog and digital interfaces to input sensor and switch signals, and output analog and relay signals, supporting basic PLC control functions. Additionally, it integrates RS232, RS485, and CAN communication interfaces for convenient remote monitoring by users.

• High starting torque, low starting current: When the starting torque reaches 150% of the rated torque, the starting current is only 30% of the rated current.
• Frequent start-stop and forward/reverse switching capability: With a braking unit and sufficient braking power, start-stop and forward/reverse switching can be performed over 1,000 times per hour.
• Strong overload capacity: The motor's starting torque exceeds 3 times the rated torque. Equipped with internal temperature sensors, the motor fully utilizes its overload capacity as long as the temperature remains within limits.
• High efficiency and excellent energy-saving performance: Across a wide speed regulation range, the overall efficiency is at least 10% higher than other speed control systems, with even more pronounced high efficiency at low speeds and under non-rated loads.
• High power factor: The power factor exceeds 0.9 under both no-load and full-load conditions.
• Simple motor structure and strong impact resistance: The motor rotor is made of stacked silicon steel sheets, with no cast aluminum, windings, or permanent magnets. Its high mechanical strength enables long-term tolerance of strong impacts and vibrations during spiral press operation.
• High controller reliability: The motor's power switching devices are connected in series with the windings, eliminating through-fault risks and making the reliability higher than that of the three-phase bridge circuit in frequency converters.

• General machinery: Fans, water pumps, oil pumps, compressors, etc.
• Textile machinery: Rapier looms, towel looms, etc.
• Oilfield machinery: Vertical oil pumps, beam pumping units, well testing machines, etc.
• Coal mining machinery: Coal shearers, endless rope winches, roadheaders, ball mills, crushers, etc.
• Press machinery: Spiral presses (brick presses), mechanical presses, etc.
• Machine tools: Gantry planers, vertical lathes, drilling machines, etc.
• Transportation vehicles: Electric vehicles
• Food machinery: Discharge machines, mixers, blenders, etc.
• Lifting machinery: Elevators, winches, hoists, conveyor belts, etc.
• Power generation equipment: Wind power generation
• Plastic machinery: Extruders, injection molding machines, etc.
• Foundry machinery: Shot blasting machines, etc.
• Paper machinery: Paper machines, calenders, paper rewinders, etc.
• Glass machinery: Bottle-making machines, etc.
• Metallurgical machinery: Steel rolling mills, etc.
• Auxiliary machinery: Coilers, uncoilers, wire laying machines, etc.
• Household appliances: Washing machines, vacuum cleaners, etc.