Heat Generation and Losses in Hydro Generators

No matter what kind of mechanical equipment is started and put into operation, it will generate heat, and hydro - generators are no exception. Synchronous generators are divided into three types according to the prime movers used: steam - turbine generators, hydro - generators, and diesel generators. A hydro - generator is a generator that uses a water turbine as the prime mover to convert water energy into electrical energy. When water flows through the water turbine, water energy is converted into mechanical energy. The rotating shaft of the water turbine then drives the rotor of the generator, converting mechanical energy into electrical energy for output.

The mechanical power obtained by a hydro - generator from the water turbine cannot all be converted into electrical power for output. There is always a certain amount of internal loss in the hydro - generator, mainly including four parts: iron loss, copper loss, mechanical loss, and additional loss. These losses can reduce the efficiency by 1% - 2%. For a 3000kW hydro - generator, it means a power loss of 30 - 60kW, and this loss causes the hydro - generator to generate heat.

(1)Iron loss refers to the hysteresis loss and eddy - current loss in the stator core.

(2) Copper loss includes the power loss generated when there is current in the stator winding and the excitation winding.

(3) Mechanical loss includes the friction loss of bearings and brushes, as well as the ventilation and wind - friction loss.

(4) Additional loss mainly includes the additional copper loss caused by the skin effect of the current in the stator winding, the pulsation loss caused by teeth and slots, and the iron loss generated on the surfaces of the stator and rotor by high - order harmonic magnetic fluxes.

Since 1982, Dingbo Generator has been a generator set manufacturer qualified by the "National Internal Combustion Engine Quality Supervision and Inspection Center". The product quality has passed the IS09001 quality system standard certification. And obtained the qualification certificate for self-operated import and export. Over the years, Dingbo units have been widely used in all walks of life, and have won the network access qualification of the Ministry of Information Industry, the network access qualification of the Ministry of Radio and Television, the network access qualification of CNPC, the network access qualification of China Mobile, and the manufacturing qualification of marine units. In 2016, Dingbo was awarded the Certificate of Qualified Supplier of China Nuclear Power Group. Dingbo Generator has been cooperating with Shangchai Power for many years. In 2009, it became the OEM partner of Shangchai Power in China. Dingbo generator VOLVO unit ranks the top three in the Asia-Pacific sales volume, and is the core OEM partner of Sweden Volvo in the Asia-Pacific region. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to [email protected].