Topmotors China: Improving Motor System Efficiency with Motor-Systems-Check in Zhenjiang

Oct 9, 2015


HU Bo, ZHENG Tan, ZHAO Feiyan Renergy Technology Consulting Beijing LLC (Top10 China) Rolf TIEBEN, Conrad U. BRUNNER Impact Energy Inc., Switzerland WANG Kaiti Zhenjiang Economic and Technological Development Zone (ZETDZ)



Electric motor systems consume 64% of China’s total electricity. From June 2010 to May 2014, China has subsidized 33 GW of installed capacity of high efficient electric motors with 1.4 billion RMB in total. However, only replacing motors cannot improve system efficiency effectively. In 2013, China launched a three-year national Electric Motor Energy Efficiency Improvement Plan, aiming to deploy high efficient motors, eliminate inefficient motors and improve motor system efficiency.

In July 2014, the Topmotors China Zhenjiang Pilot Project was launched by Renergy Technology Consulting Beijing LLC (Top10 China), Impact Energy Inc. (Impact Energy) and Zhenjiang municipal government. It develops a “Second Generation” bottom-up training program for industry in order to introduce motor-systems-efficiency know-how and capacity for the factory staff. The goal is to empower the factories to improve systematically the energy efficiency of their rotating machines. A systematic methodology “Motor-Systems-Check” was introduced and trained in 19 pilot factories whose annual electricity consumption is higher than 20 GWh in Zhenjiang city in China.

In this paper, the barriers for energy efficiency improvements for Motor Systems in China are identified by factory survey. The Motor-Systems-Check methodology was introduced and implemented in three selected pilot factories, which have high electric energy savings potential and have shown the willingness to implement motor system projects. A motor system energy efficiency improvement plan on the Zhenjiang municipal level was developed, including the motor system audit with the Motor-Systems-Check, subsidy for advanced measurement instruments, a train-the-trainers program, as well as “Reward & Penalize” policies. Lessons learned from this pilot program in Zhenjiang are summarized.


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