Worldwide DM-35 Photovoltaic Accelerated Aging Test Chamber

Overview

The Worldwide DM-35 Photovoltaic Accelerated Aging Test Chamber is an engineered environmental simulation system designed specifically for reliability assessment and degradation analysis of photovoltaic (PV) modules under controlled, accelerated stress conditions. It integrates high-fidelity solar simulation, precision temperature regulation, and in-situ electrical characterization to replicate real-world aging mechanisms—including UV-induced polymer degradation, thermal cycling fatigue, moisture ingress, and photochemical decomposition—within a laboratory setting. Unlike generic climate chambers or non-calibrated light sources, the DM-35 employs a Class AAA solar simulator (IEC 60904-9:2020 compliant) with spectral match A, spatial uniformity A, and temporal stability A, enabling quantitative, repeatable photostability testing aligned with international PV qualification standards such as IEC 61215, IEC 61646, and UL 1703. Its core architecture supports both static and dynamic aging protocols, including light-soak, damp heat, thermal cycling, and combined stress testing—critical for R&D validation, quality assurance, and lifetime modeling of crystalline silicon, thin-film, and emerging PV technologies (e.g., perovskites, OPVs).

Key Features

• Class AAA solar simulator (300–1200 nm) with ±1% irradiance stability over 1,000 hours, maintained via closed-loop optical feedback control
• Programmable temperature range: 20°C to 90°C ±0.5°C, with forced-air convection and uniformity ≤±1.5°C across test area
• Dedicated I-V measurement interface: BNC-mounted terminals compatible with standard source meters (e.g., Keysight B2900 series), enabling real-time current-voltage curve acquisition during illumination
• Modular optical filtering system: Optional bandpass filters (e.g., UV-B 280–320 nm, UV-A 320–400 nm, VIS 400–700 nm) for wavelength-selective degradation studies
• Test chamber volume optimized for PV modules up to 1.5 m × 1.0 m; configurable sample holders accommodate flexible substrates, mini-modules, and cell-level specimens
• Robust stainless-steel interior with quartz viewport, UV-stabilized gaskets, and corrosion-resistant hardware for long-term operational integrity

Sample Compatibility & Compliance

The DM-35 accommodates diverse PV architectures: monocrystalline and multicrystalline silicon wafers, CIGS and CdTe thin films, organic photovoltaics (OPVs), and perovskite solar cells—both encapsulated and unencapsulated. Its design adheres to key regulatory and industry frameworks: IEC 61215-2 (MQT 11, 12, 13), IEC 62788-7-2 (encapsulant UV stability), ASTM E927-20 (solar simulator performance), and ISO 9001-compliant manufacturing traceability. All calibration certificates (irradiance, temperature, spectral output) are NIST-traceable and include uncertainty budgets per ISO/IEC 17025 requirements. The system supports GLP-compliant test execution through audit-ready log files, user access controls, and electronic signature capability (optional FDA 21 CFR Part 11 module).

Software & Data Management

The DM-35 operates via Worldwide’s proprietary WinAging Control Suite—a Windows-based application supporting multi-step test sequencing, real-time parameter logging (irradiance, chamber T, sample T, I-V sweep data), and automated report generation in PDF/CSV formats. Data export is compatible with MATLAB, Python (via .csv/.xlsx), and LIMS integration through OPC UA or Modbus TCP protocols. Built-in alarm logic triggers email/SMS notifications on deviation events (e.g., irradiance drift >±1.5%, temperature excursion >±2°C), while encrypted local storage ensures data integrity. Audit trails record all user actions, method changes, and calibration interventions—fully compliant with GMP documentation requirements for PV materials qualification.

Applications

• Accelerated lifetime prediction of PV encapsulants (EVA, POE, silicone) under UV + thermal stress
• Photochemical stability screening of perovskite absorber layers and charge transport materials
• Qualification of anti-reflective coatings and front-glass durability per IEC 61215 MQT 17
• Correlation studies between lab-scale aging and field performance (e.g., PID resistance, LeTID onset)
• Root-cause analysis of power loss mechanisms via synchronized I-V, EL, and PL imaging
• Validation of new interconnection technologies (e.g., copper ribbons, conductive adhesives) under thermal-light cycling

FAQ

Does the DM-35 meet IEC 61215 certification requirements for PV module type testing?

Yes—the DM-35 satisfies the irradiance, spectral match, and temperature control specifications outlined in IEC 61215-2 MQT 11 (UV pre-conditioning), MQT 12 (damp heat), and MQT 13 (thermal cycling), when operated within defined protocol parameters.

Can the chamber perform simultaneous light soaking and temperature ramping?

Yes—WinAging software supports coupled illumination/temperature profiles, including stepwise ramps, sinusoidal thermal cycles under constant irradiance, and transient soak sequences.

Is external I-V measurement hardware included?

No—the DM-35 provides calibrated BNC interfaces and synchronization triggers; users supply a compatible source meter (e.g., Keithley 2450, Keysight B2912B) for electrical characterization.

What maintenance is required for long-term irradiance stability?

Lamp replacement every 1,500–2,000 hours (xenon arc) and quarterly recalibration of the reference cell and spectroradiometer are recommended per ISO/IEC 17025 guidelines.

Is remote monitoring supported?

Yes—Ethernet connectivity enables secure remote access via VPN, with live dashboard views, historical trend charts, and alarm management through the WinAging Cloud Portal (subscription optional).