Applications

OPS transformers, reactors and inductors support power conversion, isolation, current control and filtering across industrial applications. Use the application overview below to identify relevant product families, then check the requirements and specifications of the individual product.

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Application areas

Construction Machinery

Tower cranes, construction hoists, loading and unloading equipment, and marine engineering equipment.

Tower crane is the core heavy-duty hoisting equipment at construction sites. It operates year-round under harsh open-air conditions with heavy dust and drastic diurnal temperature variations. Frequent start-stop operations of hoisting, slewing and luffing mechanisms bring drastic load fluctuations, which readily produce inrush currents, voltage spikes and harmonic interference. These faults may result in uncontrolled tripping of the electric control system, burnout of inverter power modules and accelerated insulation aging of hoisting motors. Special purpose transformers and reactors for tower cranes serve as key supporting components for hoisting electric control systems, performing functions including voltage conversion, strong-weak current isolation, harmonic suppression and surge voltage protection. Developed with customized design targeting sustained vibration and unstable on site power supply at construction sites, our products feature reinforced anti vibration structure and three proof protection performance compared with general purpose industrial products. They effectively eliminate risks of unexpected electrical shutdown during high-altitude hoisting operations, ensure safe and stable lifting work and reduce later stage operation maintenance and spare part replacement costs for complete machines.

Transformers | Reactors & inductors

Rail & Rapid Transit

Auxiliary power supplies, auxiliary inverters, emergency ventilation, emergency braking and on-board power systems.

As core passenger transport equipment in rail transit, high speed electric multiple units (EMUs) run under rigorous conditions of high speed vibration, frequent start stop cycles and dynamically fluctuating voltages. Dense on board electrical equipment creates complex electromagnetic environments that readily produce power quality issues including harmonic interference, inrush currents and voltage surges, triggering hidden troubles such as on board electric control faults, equipment abnormal noise and component aging. Special purpose transformers and reactors for high speed EMUs act as key supporting components of on board power systems, performing core functions such as voltage conversion, galvanic isolation, harmonic suppression, current stabilization and electromagnetic compatibility protection. Custom developed against strict industry standards for high reliability, high safety, vibration resistance, low loss and strong electromagnetic compatibility for high speed EMUs, our products deliver superior stability, ultra low noise, wide range temperature tolerance and strong anti interference performance compared with general purpose industrial products. They eliminate operational hidden dangers of on board electrical equipment and guarantee safe, smooth and efficient full journey operation of high speed EMUs.

Transformers | Reactors & inductors

Coal Mining

Power conversion and electrical supply systems for mining applications. Confirm the applicable installation conditions and equipment requirements with OPS.

Underground mining excavators serve as core mobile equipment for roadway tunneling, working face cleaning and gangue transshipment in coal mines. Underground environments feature high risk conditions including methane gas, explosive coal dust, high humidity, heavy dust and sustained mechanical shocks. Frequent start stop of digging, slewing and travelling movements brings drastic load fluctuations that readily generate inrush currents, harmonics and voltage spikes. Once electrical components produce electric arcs or over heat, major safety hazards of igniting gas and coal dust will emerge. As key supporting components of variable frequency electric control systems for excavators, explosion proof transformers and reactors for mining applications realize functions of voltage conversion, galvanic isolation, harmonic suppression, inrush current limiting and auxiliary electric leakage protection. Custom developed against Class I coal mine explosion proof standards and coal mine safety specifications, our products feature explosion proof enclosures, reinforced insulation, vibration resistance and moisture dust proof performance compared with general purpose industrial products. They resolve pain points including poor power quality, high electric arc risks and vibration induced early stage failure for underground mobile mining equipment and guarantee safe and reliable operation of mining excavators in high risk underground coal mine environments.

Transformers | Reactors & inductors

Variable-Frequency Drives

Industrial motor drives, power drives and drive systems used in specialist operating environments.

As core speed regulation devices in industry, inverters are widely deployed for motor driven scenarios such as fans, water pumps, compressors and conveyor belts. High frequency on off operation of internal power devices of inverters generates massive harmonics, inrush currents and high frequency voltage spikes. These not only pollute upstream power grids but also damage downstream motor insulation and readily cause false action of peripheral instruments and sensors. As key components for power quality governance of variable frequency systems, transformers and reactors supporting inverters perform functions of voltage conversion, galvanic isolation, surge inrush current suppression, harmonic filtering and high frequency voltage spike mitigation. Custom developed for non linear load characteristics of variable frequency systems, our products feature superior harmonic suppression capacity, inrush current endurance, low loss and PWM pulse condition adaptable performance compared with general purpose industrial components. They resolve industry specific pain points including excessive harmonics of variable frequency systems, high equipment burn out risks and over voltage risks upon long cable transmission and guarantee long term stable operation of complete variable frequency drive systems.

Transformers | Reactors & inductors

Excitation Systems

High-voltage and low-voltage excitation, generator excitation supplies and associated control systems.

Hydraulic excitation systems serve as core control units for hydro generator sets. They undertake tasks of regulating generator excitation currents, stabilizing voltages and adjusting reactive power outputs and directly determine grid connection capability, load regulation performance and fault protection capacity of hydro power house units. Water head fluctuations, load transients and grid disturbances for hydro turbine units induce excitation loop inrush currents, harmonic distortion and voltage oscillation problems and impair grid connection stability of units. As key supporting components inside excitation cabinets, special purpose transformers and reactors for hydropower excitation realize functions of excitation side voltage conversion, current limiting, harmonic suppression, DC current smoothing stabilization and oscillation damping. Custom developed for high power, dynamically changing load and high humidity water vapor laden conditions of hydropower excitation scenarios, our products feature low loss, strong short term overload resistance, moisture rust proof performance and good anti magnetic saturation capability under heavy currents compared with general purpose industrial products. They resolve pain points including large excitation system current fluctuation, harmonic caused over heating and unit oscillation risks and guarantee safe and stable grid connection power generation of hydro generator sets.

Transformers | Reactors & inductors

Renewable Energy

Grid-connected and stand-alone photovoltaic systems, photovoltaic inverters and associated power conversion equipment.

Photovoltaic power generation converts luminous energy from PV modules into DC power, which is then transformed into AC power via inverters and fed into power grids, constituting one of mainstream clean energy generation forms in China. Subject to illumination variation, cloud cover shielding and temperature change influences, power generation outputs of PV power stations feature randomness and fluctuation. High frequency switching operation of inverters generates massive harmonics and high frequency clutter, readily inducing risks of voltage flicker, grid connection inrush currents and system resonance and impairing grid connection acceptance results and power generation yields of power stations. As core supporting components of inverters and box type transformers, special purpose transformers and reactors for PV applications realize functions of step up voltage conversion, galvanic isolation, harmonic filtering, grid connection inrush current suppression and grid resonance damping. Custom developed for bidirectional power flow, outdoor wide temperature range, dust laden and humid conditions, our products feature bidirectional power transmission capability, harmonic over heating resistance, outdoor weather resistance and good anti magnetic saturation performance compared with general purpose industrial products. They resolve pain points including difficult grid connection of PV power stations, non compliant power quality and high equipment failure rates and guarantee stable and efficient grid connected power generation for centralized and distributed PV power stations.

Transformers | Reactors & inductors

HVAC & Central Air Conditioning

Variable-frequency chillers, pumps, fans and electrical supplies for commercial and industrial HVAC systems.

Central air conditioning systems are core heating and cooling equipment for commercial complexes, office buildings, industrial plants and large scale venues. They mainly consist of variable frequency water chillers, cooling water pumps, chilled water pumps and fans. Frequent start stop operations and variable frequency speed regulation bring drastic dynamic load fluctuations, which readily generate high frequency harmonics, transient inrush currents and voltage fluctuations. These may result in overheating of main unit compressors, damage to variable frequency modules, jitter of pipe network water pumps and abnormal meter readings. Special purpose transformers and reactors for central air conditioning serve as indispensable power quality protection components for HVAC variable frequency systems. They realize functions including stabilized power supply, harmonic governance, inrush current limiting and motor protection. Custom developed for long term non stop operation, multi equipment parallel connection and drastic diurnal load fluctuation conditions of HVAC systems, our products feature lower losses, stronger harmonic resistance and quieter operation compared with general purpose industrial products. They resolve industry pain points such as high electric control failure rates, excessive energy consumption and unstable operation of central air conditioning, and guarantee year round stable and energy saving operation of HVAC systems.

Transformers | Reactors & inductors

Vacuum Sintering & Industrial Heating

Vacuum sintering, glass melting, silicon ingot casting, salt-bath and industrial resistance furnaces.

Vacuum sintering furnaces are core high temperature thermal processing equipment for powder metallurgy, hard alloys, ceramics and new energy powder material production. They complete full processes of heating, temperature holding, sintering and cooling inside closed vacuum chambers, and impose extremely high requirements for power supply stability, current smoothness and temperature control precision. Their heating systems adopt variable frequency and rectifier voltage regulating power supply modes, which readily generate current ripples, harmonic interference and voltage fluctuations. These may result in uneven furnace temperature distribution, temperature control drift, burnout of heating elements and sintering defects of finished products. Special purpose transformers and reactors for vacuum sintering deliver functions of voltage conversion, current smoothing, harmonic suppression, voltage and current stabilization and heating component protection. Custom developed for high temperature, full load continuous operation and high current stability requirements of sintering furnaces, our products feature smoother current output, lower temperature rise and superior stability compared with ordinary products. They resolve industry pain points including inaccurate furnace temperature control, short service life of heating components and low finished product qualification rates.

Transformers | Reactors & inductors

EV Charging

DC fast-charging stations, AC charging equipment, on-board chargers, isolated high-frequency power modules and energy-storage charging systems.

New energy vehicle charging piles represent core end user power equipment for new energy applications, including DC fast charging piles and AC slow charging piles. They operate under conditions of frequent start stop, dynamic power variation and heavy load shocks. High frequency switching of internal power modules readily generates harmonics, voltage surges and inrush currents. These not only cause module burnout and unstable charging of charging piles but also pollute public power grids and result in substandard power quality at distribution transformer stations. Special purpose transformers and reactors for charging piles serve as core protective and power quality governance components for charging equipment. They perform functions of voltage conversion, galvanic isolation, charging inrush current suppression, harmonic filtering, voltage and current stabilization and charging module protection. Custom developed for frequent start stop, heavy power shock, open air outdoor operation and multi pile cluster parallel connection scenarios, our products feature stronger shock resistance, better harmonic tolerance and higher protection grades compared with ordinary products. They resolve industry pain points such as charging-pile tripping, module damage, grid harmonic exceedance and unstable charging.

Transformers | Reactors & inductors

Power Systems

Distribution, harmonic filtering, reactive-power compensation, UPS and backup power systems, renewable-energy inverters and industrial drive supplies.

Power grid transmission and distribution facilities including transformer substations, switch stations and distribution network reconstruction constitute core links for safe power supply. Power grid systems feature complex loads, long transmission lines and variable operating conditions. They face multiple power quality challenges including reactive power fluctuation, harmonic interference, voltage deviation, line resonance and switch on inrush currents, which directly threaten power supply stability and end user safety. Special purpose transformers and reactors for power grids serve as fundamental core equipment of power systems, undertaking key functions such as voltage conversion, reactive power compensation, harmonic governance, current limiting & voltage stabilization, resonance damping and fault current limiting. Developed strictly complying with State grid and Southern grid technical specifications, our grid grade products feature higher voltage withstand grades, stronger insulation performance, lower losses and superior operational stability compared with ordinary industrial products. They withstand complex dynamic grid conditions over long term operation and resolve pain points including unstable grid voltage, harmonic exceedance, reactive power imbalance and high equipment failure rates, guaranteeing safe, stable and efficient operation of transmission and distribution systems.

Transformers | Reactors & inductors

Discuss your application

Send the product reference, electrical requirements, duty cycle, installation environment and any relevant drawings to info@wopspower.com, or contact OPS.