[Manufacturing Factory] Measures against instantaneous voltage sags and power outages

Measures against instantaneous lows and power outages in semiconductor manufacturing plants

Target Industry

  • 【Manufacturing】Electrical / Electronic devices / Semiconductors
  • 【Manufacturing】Automobiles / Transportation equipment
  • 【Manufacturing】Food / Medicine / Cosmetics

Background and Challenges

In recent years, many disasters have occurred, and there are concerns about the possibility of voltage drops and momentary power outages (instantaneous power outages) even if power outages do not occur.

Particularly, in the manufacturing industry such as semiconductor factories, if the production equipment or equipment around the clean room is momentarily interrupted or has a power outage, the temperature of silicon or germanium will drop and deteriorate, and there is a risk of causing a large amount of damage.

A typical countermeasure against power trouble is to introduce a UPS (Uninterruptible Power Supply). There are several types of UPS implementation methods, and the optimal solution depends on the availability and application required of the system.

In the past, electric double layer capacitors (EDLCs) were used for short-term compensation. In addition, lead acid batteries were often used to provide systems that compensate for periods that cannot be covered by EDLC, but there were issues such as the need for regular battery checks and the difficulty of battery replacement timing.

Under such circumstances, there is a tendency to have higher output, hiegher safety, smaller size, and longer life in the manufacturing industry.

Under such circumstances, there is a tendency for manufacturing sites in the manufacturing industry to have higher output, higher safety, smaller size, and longer life.

Technical Advantages of Lithium-ion Capacitors (LIC)

At the production site of the manufacturing industry, the following issues are mainly emphasized.
Lithium-ion capacitors have the characteristic of being able to solve these problems.

High Operating Voltage

  • Cover from 20kVA to 10,000kVA.
  • High voltage (3.8V / cell) reduces the number of required cells and makes it possible to reduce the size of the power supply.

High Energy Density

  • LICs have higher energy density than EDLCs, smaller and longer time compensation (several tens of seconds to minutes) ESS can be realized.
  • Due to its high energy density, it is possible to compensate for several tens of seconds, and it is possible to back up until the start of independent operation of the emergency generator.

High Safety

  • Unlike Lithium-ion Batteries, it may be possible to install it as a non-dangerous material.

High System Efficiency

  • Higher system efficiency (99% or higher) can be achieved compared to traditional UPS (90%).
  • With a few minutes level compensation, it makes possible to realize "System switching without instantaneous power interruption" and "construction of an interconnected system with an emergency generator".

Energy Storage Device Comparison

Lithium Ion Capacitor (LIC) Lithium Ion Battery (LIB) Electric Double Layer Capacitor (EDLC) Lead-acid Battery
Energy density

High Power, Long Life, High Safety Lithium Ion Capacitor

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