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Generator Stator Cores Support

Name: Alternator Stator Mounts & Generator Structural Supports – Frigate
Price: 249.00 USD
Availability: InStock
Rating: 5 (837 reviews)

Generator stator cores support experience significant radial electromagnetic forces during operation, requiring robust support structures to maintain precise positional stability. Any deflection under these cyclic magnetic pressures can compromise performance and structural integrity.

Material Specification

Low-Carbon Steel (ASTM A36), Aluminum 6061-T6 (AMS 4025), or Stainless Steel 304L (AMS 5513)

Overall Dimensions

Ø300–2000mm (±0.1%), Height: 100–800mm (±0.5mm), Wall Thickness: 10–50mm

Stator Core Interface

Dovetail Slots (0.5–2.0mm clearance), Compression Bolts (M8–M24), Epoxy Bonding Surfaces (Ra 3.2µm)

Mounting Interface

Flanged (ISO 5211), Foot-Mounted (ANSI C50.10), Spline Connection (SAE J498)

Load Capacity

Electromagnetic – 5–50kN/m², Vibrational – 10–100g (IEC 60034-14), Thermal – -40°C to +200°C

Product Description

To address this, stator core supports are designed using finite element-based structural optimization. This approach ensures uniform load distribution across the stator back iron while eliminating localized stress risers that could cause lamination loosening or interlaminar shear, ensuring long-term reliability under demanding operating conditions.

Stiffness/Deflection

≤0.05mm radial deflection @ full load, Natural Frequency >2x line frequency

Thermal Management

Fluorescent Penetrant (FPI), UltrasCTE-Matched to laminations, Thermal Breaks (Ceramic Insulators) onic (UT), X-ray (Welds)

Cooling Provisions

Integrated Cooling Channels (5–20mm Ø), Heat Fins (50–100mm pitch)

Dimensional Tolerances

Concentricity – ≤0.1mm TIR, Flatness – ≤0.05mm/m, Slot Pitch – ±0.02mm

Certification Standards

IEC 60034, NEMA MG-1, ASME BPVC Section III, ISO 1940-1 (Balance)

Technical Advantages

Electromagnetic excitations from unbalanced magnetic pull and slot harmonics generate broadband vibratory input into the stator core. The support assembly is engineered with frequency-specific stiffness and damping characteristics to shift natural frequencies away from dominant excitation bands. High-damping structural interfaces and material damping ratios are tailored to suppress modal amplification during partial load, grid-induced transients, and asynchronous startup. These features prevent fatigue cracking and stabilize the stator-frame dynamic response over the full machine operating envelope.

Differential thermal expansion between the stator core and its mechanical supports introduces axial stress and potential deformation during load cycling. Material pairings for the support structure are selected based on matched or near-matched coefficients of thermal expansion (CTE), reducing the buildup of shear stress between core laminations and support points. Structural allowances for controlled expansion, including compliant joints and axial movement features, maintain uniform preload and avoid thermally induced misalignment or warping of the stator frame over prolonged operation.

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Industry Applications

Thermal Power Generation

Supports maintain stator core rigidity under prolonged thermal gradients and cyclic loads in steam turbine-driven synchronous generators.

Nuclear Power Plants

Engineered for dimensional stability and low radiation sensitivity during continuous base-load operation in high-reliability nuclear generator systems.

Hydroelectric Generators

Designed to accommodate axial flux variation and structural moisture exposure in large vertical shaft hydro generators with slow-speed operation.

Wind Turbine Generators

Supports withstand multi-directional load reversals and harmonic excitation in permanent magnet and doubly-fed induction wind generator stator assemblies.

Gas Turbine Generators

Handles rapid thermal transients and axial thrust during fast ramp-up cycles in gas turbine-based peaking and combined cycle systems.

Marine Propulsion Generators

Supports dampen hull-induced vibratory loads and maintain magnetic symmetry in synchronous generators integrated into marine propulsion networks.

Magnetic Permeability Control and Eddy Loss Minimization

Magnetic neutrality in the stator support is critical for preserving core magnetic performance and avoiding parasitic losses. Structural elements are fabricated from non-magnetic stainless steels or high-resistivity alloys with low relative permeability to mitigate magnetic field distortion. Design avoids the formation of closed-loop conductive paths that may induce eddy currents.

The interface between the stator laminations and their support must maintain dielectric strength under voltage stress from transient overvoltages or partial discharge events. Non-conductive spacers, high-creepage insulators, and field-rated coatings are integrated within the mechanical joints to provide insulation without compromising structural rigidity.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure structural stability in large-frame generator stator core supports?

Frigate uses high-strength, low-deformation alloys with optimized load paths derived from FEA simulations. Support geometries are validated to ensure uniform stress distribution across the core back iron. No stress risers or asymmetries are allowed in the final design. This guarantees structural rigidity even in high-output multi-pole generators.

What process does Frigate follow to prevent core delamination due to thermal cycling?

Frigate selects materials with thermal expansion coefficients closely matched to the stator laminations. Mechanical joints are designed with compliance zones to absorb axial displacement. Controlled clamping pressure avoids local crushing or interlaminar shear. This approach maintains core integrity across thousands of thermal cycles.

How does Frigate handle electromagnetic compatibility in stator core support design?

Frigate uses non-magnetic stainless steels or treated alloys to prevent flux interference. Support components are shaped to avoid closed conductive loops that could form eddy currents. Field uniformity is maintained by ensuring magnetic symmetry around the stator. These steps protect generator performance from parasitic losses.

What measures does Frigate take to maintain tight tolerances in stator support fabrication?

Frigate employs CNC machining with precision fixturing to achieve sub-50 micron flatness and parallelism. Every support interface is verified using CMM inspection before assembly. Tolerances are critical to preserve core concentricity and ensure even clamping. This prevents thermal spots and mechanical distortion during operation.

How does Frigate validate stator core support endurance under cyclic mechanical loading?

Frigate conducts accelerated fatigue testing under representative thermal and mechanical cycling profiles. Test data is correlated with real-world load spectra using Miner’s rule for damage accumulation. Material choices are based on high fatigue strength and resistance to creep and fretting. This ensures 20+ year durability in demanding grid environments.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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