Case Center

Back your energy-saving initiatives and equipment upgrades with verifiable results.

7 cases with recorded energy savings are available; sort by savings rate to quickly locate high-efficiency projects.

Mining and MetallurgyEnergy Efficiency Retrofit

Panpu SRM Switched Reluctance Motor Drive System Case Study | Oilfield Production Zone | Beam Pump Load Speed Control and Soft Start Retrofit

In a certain oilfield's production zone, 37 beam pumping units equipped with asynchronous motors have operated under light loads for an extended period, resulting in frequent start-stop cycles and high inrush currents. The project replaced the entire system with Panpu SRM series switched reluctance motor drive systems, enabling speed control based on the pumping unit load curve and soft starting.

Learn more

Mining and Metallurgy

Wolong High-Voltage Variable Frequency Drive Case Study | Pakistan K Electric Power Supply Project | Medium-Voltage VFD System Bidding and Engineering Delivery

Longde Electric (Zhejiang) Power Electronics issues Authorization Letter NO.WLPEFX20260019, authorizing Pakistani agent Techno Control Pvt. Ltd. to bid for the K Electric VFDs project. The project confirms ten delivery commitments—including technical clarification, drawings, protection coordination, interfaces, HVAC dimensions, foundations, signal exchange, software backup, and O&M training—as specified in the Technical Clarification Letter.

Learn more

Mining and Metallurgy

Wolong WD5100 High-Voltage VFD Case Study: Saudi CG Test Bench Project – 6560kW Motor Drive Variable Frequency Speed Control

The Saudi CG Test Bench Project (CG Saudi Test Bench Project MVC) was commissioned in 2014/6, utilizing 1 units of 6560kW high-voltage variable frequency drives to power large-capacity motor loads. This project represents a flagship overseas deployment of the series-connected multi-level high-voltage VFD solution on the same platform.

Learn more

Mining and Metallurgy

Wolong High-Voltage Variable Frequency Drive Case Study | South Africa Rio Tinto Mine Project | 3000kW Fan VFD Retrofit

The South Africa Rio Tinto Mine Phase II and Phase III projects were commissioned in 2015 month 5 and 2015 month 9, respectively. Each phase is equipped with 2 high-voltage variable frequency drives to power mine ventilation fans, enabling fan speed adjustment based on demand.

Learn more

Mining and Metallurgy

Wolong High-Voltage Variable Frequency Drive Case: Middle East AL-WAHA Oilfield Project – 3700kW Injection Pump VFD Speed Control

The Middle East AL-WAHA Oilfield Phase II HVC project, commissioned in 2012 7, utilizes 1 units of 3700kW high-voltage variable frequency drives to power the oilfield injection pumps, ensuring stable regulation of injection pressure and flow.

Learn more

Mining and Metallurgy

Wolong High-Voltage Variable Frequency Drive Case: GGL-II Project in Karachi, Pakistan | 2240kW Compressor VFD Speed Control

The GGL-II Karachi Pakistan MVC project went online in 2015 5, utilizing 1 units of 2240kW high-voltage variable frequency drives to power process compressor loads, enabling the compressors to adjust their speed according to process demand.

Learn more

Mining and Metallurgy

Wolong High-Voltage VFD Case Study: Kenya Industrial Project – 4000kW Fan Variable Speed Drive

The Kenya MVC industrial project went online in 2014 12, utilizing 1 units of 4000kW high-voltage variable frequency drives to power large-capacity fan loads, enabling on-demand speed control for the ventilation system.

Learn more

Looking for a motor and energy-saving solution tailored to your operating conditions?

Submit request. Our technical engineer will contact you within 1 business days.

Get Technical Solution Get a product quote