EM - ENERGY SOLUTIONS

ELECTROMAGNETIC ENERGY SOLUTIONS

 

Automatic Voltage Equalizer | Automatic Waveform Restorer

Voltage Balancing | Surge Suppression | Harmonic Filter | Network Analyzer

 

Low, Medium & High Voltage Systems

“ Solutions for energy efficient and reliable power distribution systems. “

LATEST NEWS

EM Energy Solution with great Success in South Korea

EM Energy Solution with great Success in South Korea

Recently we had several installations of our units at different locations in South Korea. The results and feedback have been amazing. We have proven our units unique capabilities in terms of energy reduction, improved equipment performance and a much more reliable...

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Neonent factory South Korea

Neonent factory South Korea

This week we installed our units at Neonent Factory in South Korea. Neonent is a major supplier for parts to the automobile industry with many of the biggest car manufacturers as their main customers. The factory has very advanced production with a lot of automation...

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EM-ENERGY SOLUTIONS는 배전 시스템에서 향상된 전력 품질과 에너지 최적화를 위한 제품을 설계합니다우리의 새로운 혁신적인 특허기술은 가동 중단 시간에너지 소비 및 배출량을 감소 시키고 전기 장비의 수명 연장 및 개개인의 안전을 향상 시키는 비용을 보다 절감할 것 입니다.

 

AVE 및 AWR은 모든 공통 분배 시스템에 최적화 되어 있습니다설치는 간단하며장치는 공급 변압기 2차측에 병렬로 연결되며 모든 다운 스트림 장비의 과도고조파 왜곡전압 불균형불균형 전압 강하 및 아크 플래쉬로부터 보호 합니다.

AVE  AWR의 장점

AVE :

AVE & AWR Benefits:

  • 상간전압 안정화 및 균형

  • 과전압 및 단락방지

  • 아크 방전 방지

  • 고조파 왜곡 억제

  • 고조파 주파수 상쇄

  • 에너지 소비 감소

  • 전기 모터 및 부품 수명 연장

  • VFD와 모터 사이의 케이블 길이한도 증가

  • VFD 과도전압 / 전류 및 왜곡 억제

  • 전력손실 감소

  • 다운 타임 감소

  • 비용 절감

  • CO2 배출량 감소

  • 고조파 왜곡 감소

  • 고조파 주파수 상쇄

  • 에너지 소비 감소

  • 전기 모터 및 부품 수명 연장

  • 전력손실 감소

  • 다운타임 감소

  • 비용 절감

  • CO2 배출량 감소

Industry Challenge

Today’s use of electronics and power electronics are setting higher demands to power quality. The industry is experiencing considerable costs in terms of increased power bills, reduced operational lifetime, and damage to electrical equipment. Many of these problems are related to the harmonic distortion created by the increased use of power electronics, transient voltage surges, and unbalanced voltage dips caused by uneven phase loads.

Voltage imbalance is a large and expensive problem in the industry. Electric motors will operate at higher temperatures and lower efficiency, which results in significantly reduced life expectancy and increased power consumption. For electrical equipment, a rule of thumb is that an average temperature increase of 10 degrees Celsius equals a 50% reduction in life expectancy.

Equipment failure and system lockup result in unreliable operation with downtime and production stop. Many industries run delicate processes that require a fully functional production line. Production stop related to faulty equipment can significantly impact production output and, subsequently, a company’s earnings.

Another high potential industry hazard is Arc-Flash. Arc-Flash is one of the most dangerous incidents for both personnel and equipment. It is an electrical explosion/discharge that results from a low-impedance connection through the air to ground or another high voltage phase in the electrical system. It may also be initiated through accidental contact, underrated equipment compared to available short circuit current, contaminated insulated surfaces, as well as other causes.

An arc-Flash event can dissipate large amounts of deadly energy in form of shock wave and superheated metal plasma. Temperatures can reach as high as 19 000 degrees Celsius, even hotter than the surface of the sun.
This kind of energy can set fire to clothing and severely burn human skin in fractions of a second. According to Industrial Safety and Hygiene News report, there is, on average 30 000 Arc-Flash incidents every year with an estimated 7000 burn injuries, 2000 hospitalizations, and 400 fatalities.

 

Solution

AVE is designed for balancing phase voltages with respect to ground and mitigating transient events to a non damaging level. Any kind of voltage imbalance on a system will be detected, and the unit will redirect the energy from the high voltage phases to the low voltage phase. The AVE suppresses transient voltage spikes without degradation of itself and does not allow the installation to be exposed to voltages several times its nominal rating. If the voltage is controlled, there is no force behind the current to push it in to damaging levels. Due to this, AVE also increases the installations safety factor, by reducing the risk of electric shock, arc-flash and potential fire.

AWR is designed for wye distribution systems with neutral conductor. These systems are prone to harmonic distortion between phase and neutral. Due to electromagnetism, AWR reacts near the speed of light and mitigates harmonic distortion. The unit will cancel harmonic distortion by beating the energy from the distortion against itself. The more harmonic distortion on the system the more AWR will react to suppress the noise.

To summarize, the units serves as a surge suppressor, voltage regulator and harmonic filter.
It is easy to install and is connected as close as possible to transformer secondary side. It will protect all downstream equipment , thus making other power quality technology such as MOV based devices unnecessary and obsolete. By having the AVE installed, the result will be huge cost savings and increased electrically safety.

The screenshot above is taken from Neonent ltd car parts factory in South Korea AND clearly shows the AVE`s unique capability to reduce energy consumption. The average daily energy consumption without AVE active is 4201.3 kWh compared to 3918.85 kWh with the AVE active an average saving of 282.45 kWh per day!  The yearly saving will add to more than 90 000 kWh  (6 days working week).  With AVE, customers save energy, increase revenue, productivity, and meet regulators grid connection criteria

Energy log above shows the massive difference in reactive energy consumption with and without the AVE active. The AVE is reducing reactive energy by almost 50%. Reactive Power creates an extra load on the installation, equipment, and transport infrastructure (such as cables). Reactive power can arise in the external network and the local network and may be caused by the energy supplier as well as the end-user. In this case, the vast amount of harmonic distortion leads to extra reactive power consumption. Reactive power has a negative effect on efficiency and capacity and introduces unnecessary (energy) losses and costs.

The Waveform log above is captured by EMES PQA during welding machine operation at Samsung Heavy Industries and shows the exact moment when AVE is activated. The Waveform before the AVE activation is distorted with a high voltage unbalance (8-9%). After AVE activation, we see a short transitional period of 30-40ms where the unit stabilizes the system, removes harmonic distortion, eliminates transients, and reduces voltage unbalance (0.5%).  After the AVE is activated, we can see a perfect sinus waveform and a 100% balanced system.

Existing semiconductor-based surge protection devices are too slow and often allow as much as five times nominal voltage into the system. These transients will drastically shorten the lifetime of control system,  electronics or any other semiconductor-based equipment. The AVE reacts with the speed of the current and does not allow any significant increase in the voltage. During laboratory testing, the AVE mitigated a charge of 10 000 Volts to a spike of only 28 Volt!

Above you can see a simplified schematic of AVE’s main circuit. The variable transformers are connected in star configuration on primary side with neutral connected to ground reference, while secondary side of the variable transformers are connected in series with a non-inductive stainless-steel grid resistor. The schematic visualizes the current flow in the AVE during a ground fault. The working principle will also be the same for any other voltage imbalance related problem.

If we look at the phase vector display, we see that the voltages are perfectly 120 degrees offset during the fault. The supported phase (L3) is supported by the two phases via the variable transformer circuits secondary side. During the fault, all phase currents will be in phase making us able to use simple algebra to calculate the ground current. Energy is redirected from the healthy phases to the low voltage phase.