BKPOWER UPS Ensures 98.5% Wafer Yield for Huaxing Laser

Ⅰ. Project Overview

Enterprise Background
- Founded in 2016, headquartered in Pizhou Economic Development Zone, Jiangsu, Jiangsu Huaxing Laser is a national high-tech and specialized “Little Giant” enterprise.
- Focuses on R&D and production of Ⅲ-Ⅴ compound semiconductor epitaxial wafers (GaAs, InP), serving high-end fields like optical fiber communication and laser radar.
- Features: 30+ PhD/MA core team, ¥200M+ equipment value, 5,000㎡ clean workshop, ¥150M+ annual output.
Production Line Power Demands
- MOCVD equipment for semiconductor epitaxy requires:
  - Voltage stability within ±1% (fluctuations reduce wafer yield).
  - Harmonic filtering for distortion rates >5% from high-frequency devices.

Power Quality Risks
- Instantaneous overload: MOCVD startup current peaks at 8,000A, triggering overload protection in traditional UPS.
- Harmonic pollution: THDi reaches 8% from non-linear loads, shortening equipment lifespan.
Harsh Environmental Demands
- Equipment shutdown >10 minutes scraps wafers, requiring seamless UPS switching.
O&M Management Hurdles
- Decentralized supply: 12 independent UPS systems caused >30-minute fault response.
- Battery aging: Lead-acid batteries (3,000 cycles) incurred ¥500K annual replacement costs.

Technical Architecture
- Intelligent Parallel Control:
  - 4×300kVA UPS in parallel (1.2MW total), N+1 redundancy, ±1% load balancing.
- Harmonic Governance:
  - Built-in THDi active filtering, input PF >0.99.
Implementation Strategy
- Modular deployment with 30% capacity reserve.
- Integration with factory MES for real-time UPS efficiency and battery SOH monitoring.

Production Stability Gains
- 98% reduction in MOCVD shutdowns, wafer yield up from 92% to 98.5%.
Energy Efficiency Optimization
- THDi reduced from 8% to 3%, saving ¥800K/year in electricity.
- Lithium iron phosphate batteries (10,000 cycles) cut maintenance costs by 70%.