Industrial Inverter Capacitor Solution

Application

Description

Complete capacitor solutions for industrial inverters including DC-Link, snubber, and control power capacitors

Core Advantages

High Ripple Current CD139 series ripple current up to 15A+, meeting high-power inverter requirements
Long Lifespan Design Using high-quality electrolyte and aluminum foil, rated lifespan 8,000-10,000 hours at 85C
Low ESR Film capacitors ESR as low as 2mOhm, reducing losses and improving efficiency
Self-healing Characteristics Film capacitors have self-healing characteristics, automatic recovery after local breakdown, improving reliability
Wide Temperature Range Operating temperature -40C to +105C, adapting to various industrial environments

Recommended Bill of Materials (BOM)

Item Part Number Description Quantity Datasheet
1 CD139 10000uF/450V DC-Link Capacitor (30-55kW) 4 📄 Download
2 DC-Link 100uF/800V Film DC-Link Capacitor (Alternative Solution) 2 📄 Download
3 Snubber Capacitor 0.47uF/1200V IGBT Snubber Capacitor 6 📄 Download
4 CD11 1000uF/25V Control Power Filter Capacitor 10 📄 Download
5 Balancing Resistor 100kOhm/2W Capacitor Balancing Resistor 4 📄 Download

Applications

Industrial Inverters
Servo Drives
Elevator Drives
Fan and Pump Inverters
CNC Machine Tools
Textile Machinery

Technical Specifications

Applicable Power Range
5kW-500kW
D C- Link Voltage
540VDC-750VDC
Ripple Current
10A-100A depending on power
Operating Temperature
-40C to +50C (Ambient)
Expected Lifespan
Aluminum electrolytic capacitors 5-10 years, film capacitors 20+ years
Protection Level
IP20-IP54

Customer Success Stories

Major Inverter Manufacturer

Industrial Automation |

Challenge

Original imported brand capacitors, high cost, long lead time

Solution

Switched to Jianghai CD139 series capacitors, provided complete replacement solution

Results

Cost reduced by 30%, lead time shortened from 12 weeks to 4 weeks, product reliability reached equivalent level

Photovoltaic Inverter Manufacturer

New Energy |

Challenge

Required DC-Link capacitors with 20+ year lifespan

Solution

Adopted Jianghai DC-Link film capacitors to replace aluminum electrolytic capacitors

Results

System design lifespan reached 25 years, volume reduced by 40%, efficiency improved by 0.8%

FAE Expert Insights

S

Senior FAE

Applications Engineer

10+ years

Professional Insights

Industrial inverters are a key application area for Jianghai capacitors. For selection, recommend DC-Link capacitance calculated at 100-200uF per kW power, voltage rating selected at 1.25x above working voltage. For high-power inverters (>75kW), recommend film capacitor solutions, although initial cost is higher, long-term reliability is better. Note to maintain appropriate spacing during installation for heat dissipation and configure balancing resistors.

Key Takeaways

  • Calculate capacitance by power: 100-200uF/kW
  • Voltage margin: Rated voltage >= Working voltage x 1.25
  • High-power applications prioritize film capacitors
  • Pay attention to heat dissipation design, maintain appropriate spacing
  • Configure balancing resistors to prevent series imbalance

Decision Framework

Decision Framework
Steps:
  1. Evaluate requirements
  2. Compare solutions
  3. Consult FAE

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