Synchronous Reluctance Motors (SynRM)

Name: Synchronous Reluctance Motors (SynRM)
Brand: Magnet-Free Motor
Availability: PreOrder

IE5 ultra-premium efficiency motors with zero rare-earth materials, designed as IEC/NEMA replacement paths for standard induction motors in pumps, fans, compressors, and continuous-duty industrial drives.

Target Buyer:Best for procurement managers, plant engineers, and equipment OEMs reviewing IE3 induction motor replacement under EU 2019/1781, DOE 2027 planning, and energy-cost targets.

Engineering Assets

Request reference specifications and STEP models without a registration gate. We confirm the correct package after a quick project-fit check.

Request Datasheet Request STEP Model

Open SynRM industrial motor showing laminated reluctance rotor and copper stator windings

Capability Highlights

IE4/IE5 efficiency target for EU Ecodesign and DOE-aligned projects
Neodymium-free rotor path with reduced permanent-magnet cost exposure
Flux-barrier rotor design to remove induction rotor copper loss
IEC and NEMA frame replacement planning for pump, fan, and compressor OEMs
VFD parameter review for open-loop or closed-loop vector control
Optional insulated bearing and shaft-current mitigation discussion

Typical Applications

HVAC air handlers and cooling towers
Industrial water and process pumps
Compressors and vacuum systems
Textile and paper machinery
Retrofit programs replacing IE2/IE3 induction motors

Engineering Focus

VFD compatibility with open-loop or closed-loop vector algorithms
Frame, shaft, foot, flange, and terminal-box compatibility review
Partial-load efficiency and heat rise under real pump/fan duty cycles
Bearing-current mitigation for long cable runs and high dV/dt drives
Efficiency test method, load points, and nameplate/document requirements

Key Evaluation Matrix

Metric	Typical Range	Why It Matters
Efficiency Class	IE4 / IE5	Defines the compliance direction, test evidence, and buyer-side TCO model.
Power Range	0.75-450 kW review range	Lets buyers screen retrofit and OEM platforms before detailed frame confirmation.
Voltage Platform	230V / 400V / 460V / 690V	Determines insulation, drive, and regional compliance assumptions.
Mechanical Interface	IEC 90-315 / NEMA equivalent review	Drop-in replacement value depends on shaft, foot, flange, and terminal-box alignment.
Drive Requirement	VFD required	SynRM projects must validate inverter algorithms before PO and sample release.

Production and Validation Flow

Process Step	Buyer Evidence	Acceptance Gate
Application and retrofit screen	Existing nameplate, frame drawing, load curve, duty cycle, VFD model, and target efficiency class.	SynRM is confirmed as viable against mechanical interface, load profile, and control mode.
Mechanical and VFD fit review	Shaft, foot, flange, terminal-box, enclosure, cable length, encoder need, and VFD parameter notes.	Drop-in or OEM adaptation scope is clear before sample quotation.
Sample efficiency and thermal validation	Efficiency test plan, heat-rise points, load points, nameplate assumptions, and inverter settings.	Sample passes agreed efficiency, thermal, vibration, and control-stability criteria.
Pilot deployment planning	Lot-release records, installation notes, packaging, spare strategy, and delivery schedule.	Buyer can release pilot or repeat orders with known installation and documentation scope.

RFQ Checklist

Required power, speed, poles, and duty cycle
Operating voltage and frequency, such as 400V/50Hz or 460V/60Hz
Existing IEC or NEMA frame size, mounting, shaft, and enclosure needs
VFD brand/model, control mode, encoder requirement, and cable length
Target efficiency class, ambient temperature, altitude, and protection class
Prototype quantity, annual forecast, destination country, and requested documents

Risk Controls

Drive mismatch: Provide VFD parameters upfront for algorithm confirmation.
Unexpected retrofit work: Confirm frame, shaft height, mounting, cable entry, and terminal-box orientation before quotation freeze.
Efficiency claim mismatch: Agree on test standard, load points, and report format before sample acceptance.
Bearing damage under inverter duty: Review dV/dt, cable length, grounding, and insulated bearing requirements for larger frames.

Product Gallery

Precision reluctance rotor and stator lamination geometry for magnet-free motor programs

Stacked silicon steel stator lamination core for IE5 motor manufacturing

Buyer FAQ

Does it require a VFD?

Yes, SynRM inherently requires a Variable Frequency Drive for operation.

Can a SynRM replace an existing induction motor?

Often yes, but the replacement must be checked against frame size, shaft height, mounting, cooling, enclosure, load curve, and VFD control mode.

What information is needed for a TCO comparison?

Share power, operating hours, electricity cost, load profile, current efficiency class, and requested efficiency target so we can structure the comparison.

Related Resources

Inquiry Email

[email protected]

Email app

Include target torque/speed, quantity, and delivery location.

Instant Chat

+86 18857971991

Chat on WhatsApp

Direct response from our engineering team.

Synchronous Reluctance Motors (SynRM)

Target Buyer:Best for procurement managers, plant engineers, and equipment OEMs reviewing IE3 induction motor replacement under EU 2019/1781, DOE 2027 planning, and energy-cost targets.

Capability Highlights

IE4/IE5 efficiency target for EU Ecodesign and DOE-aligned projects

Neodymium-free rotor path with reduced permanent-magnet cost exposure

Flux-barrier rotor design to remove induction rotor copper loss

IEC and NEMA frame replacement planning for pump, fan, and compressor OEMs

VFD parameter review for open-loop or closed-loop vector control

Optional insulated bearing and shaft-current mitigation discussion

Engineering Focus

VFD compatibility with open-loop or closed-loop vector algorithms

Frame, shaft, foot, flange, and terminal-box compatibility review

Partial-load efficiency and heat rise under real pump/fan duty cycles

Bearing-current mitigation for long cable runs and high dV/dt drives

Efficiency test method, load points, and nameplate/document requirements

Key Evaluation Matrix

Metric	Typical Range	Why It Matters
Efficiency Class	IE4 / IE5	Defines the compliance direction, test evidence, and buyer-side TCO model.
Power Range	0.75-450 kW review range	Lets buyers screen retrofit and OEM platforms before detailed frame confirmation.
Voltage Platform	230V / 400V / 460V / 690V	Determines insulation, drive, and regional compliance assumptions.
Mechanical Interface	IEC 90-315 / NEMA equivalent review	Drop-in replacement value depends on shaft, foot, flange, and terminal-box alignment.
Drive Requirement	VFD required	SynRM projects must validate inverter algorithms before PO and sample release.

Production and Validation Flow

Process Step	Buyer Evidence	Acceptance Gate
Application and retrofit screen	Existing nameplate, frame drawing, load curve, duty cycle, VFD model, and target efficiency class.	SynRM is confirmed as viable against mechanical interface, load profile, and control mode.
Mechanical and VFD fit review	Shaft, foot, flange, terminal-box, enclosure, cable length, encoder need, and VFD parameter notes.	Drop-in or OEM adaptation scope is clear before sample quotation.
Sample efficiency and thermal validation	Efficiency test plan, heat-rise points, load points, nameplate assumptions, and inverter settings.	Sample passes agreed efficiency, thermal, vibration, and control-stability criteria.
Pilot deployment planning	Lot-release records, installation notes, packaging, spare strategy, and delivery schedule.	Buyer can release pilot or repeat orders with known installation and documentation scope.

RFQ Checklist

Required power, speed, poles, and duty cycle

Operating voltage and frequency, such as 400V/50Hz or 460V/60Hz

Existing IEC or NEMA frame size, mounting, shaft, and enclosure needs

VFD brand/model, control mode, encoder requirement, and cable length

Target efficiency class, ambient temperature, altitude, and protection class

Prototype quantity, annual forecast, destination country, and requested documents

Risk Controls

Drive mismatch: Provide VFD parameters upfront for algorithm confirmation.

Unexpected retrofit work: Confirm frame, shaft height, mounting, cable entry, and terminal-box orientation before quotation freeze.

Efficiency claim mismatch: Agree on test standard, load points, and report format before sample acceptance.

Bearing damage under inverter duty: Review dV/dt, cable length, grounding, and insulated bearing requirements for larger frames.