50Hz 60Hz

Q: Has anyone got experience in using a 50 Hz Alternator of about 20 MW, in a 60 Hz system country? What are the changes required in the alternator? Is it economical to carry out this change or one has to go in for a new alternator for 60 Hz only. There are lots of commercial requests for such usages of 50 Hz machine in 60 Hz locations and vice versa.

A: You can use a 50 Hz alternator in 60 Hz power system without changing the internals. The concern though, is the operational speed ...

If you operate a 3600 rpm (60 Hz) synchronous generator at 3000 rpm (50 Hz), the power output will be reduced, simply because the mass of the rotor remains constant and you reduce its rotational speed. Based on the laws of physics, kinetic energy is directly proportional to the mass and the square of the velocity. Conversely, if you operate a 3000 rpm (50 Hz) generator at 3600 rpm (60 Hz) the power output wi ...

50Hz vs 60Hz in operating speed

The primary difference between 50 Hz (Hertz) and 60 Hz (Hertz) is, well, 60Hz is 20% higher in frequency. For a generator or induction motor pump (in simple terms) it means 1500/3000 RPM or 1800/3600 RPM (for 60Hz). Lower the frequency will be the iron losses and eddy current losses. Lower the frequency, speed of induction mo ...

On a centrifugal pump, the head at the discharge end should be 44% higher than if it were run at 50Hz, so the shaft torque would also be 44% higher, no? A throttling valve will restrict flow and reduce the load, but at the designed flow rate under 50Hz operation, the motor will still be operating 20% faster than it would at 50Hz. I'll take your word that this is acceptable.

What I would do would be to discuss the pump application with the manufacturer and see if it was possible to ...

The frequency output of the Permanent Magnet Generator is related to the pole count of the exciter - compared to the motor it is feeding.

If the motor line frequency is 50 Hz, then the exciter has 3x the pole count of the synchronous machine (i.e. 2-pole synch with 6-pole exciter design, or 4-pole synch and 12-pole exciter, etc.)

If the motor line frequency is 60 Hz, the exciter has 2.5x the pole count of the synchronous machine (i.e ...

The excitation system requires a very small fraction of the total power being generated. If we could simply increase the excitation (a very small amount of power) and increase the generator's real power output, the world's energy problems would be solved, because we would have a perpetual motion machine.

In the case of a generator connected to a large grid, the generator will inject any desired amount of power into the grid if its prime-mover is fed the desired power (plus a small ...

The voltage levels, particularly at the high-voltage and extra-high-voltage levels, have long been standardized in different industrialized countries. The North-American system is 60 Hz, while the European system is 50 Hz. Each other country in the world (as far as I know) follows one or the other frequency standard. Japan is the only country I know of that has both 50 Hz and 60 Hz systems.

Then, once you've picked your "syste ...

The real reason behind the choice of 11, 22, 33, 66 and 132kV levels is not clear from the responses to date and it may have passes into history unknown. Most likely, it was a decision arising from a standards committee and it may be an optimum transformation ratio chosen to minimize total losses. Someone still alive may yet know the reason. Then again, it may have a legacy resembling that of the standard rail gauge.

These numbers were chosen arbitrarily in the past and have actual ...

Following texts are the video transcription of GoHz frequency converter parameter setting.

First, we see the frequency converter panel of parameter settings, there are total 10 parameter sets, count from M0 to M9, each parameter set store the values of voltage, frequency and running time. Press the UP/DOWN buttons to select which parameter s ...

GoHz frequency converter is a great solution for converting 50Hz to 60Hz among different countries, also can convert 60Hz to 50Hz, in additional of frequency adjusting, the output voltage is changeable from 0-300 volts for single phase power supply, 0-520 volts for three phase power supply. This article shows the basic operation guidelines of GoHz static frequency converter, you can easy set up a converter by following this guide. ...

You can run the 50Hz transformer on a 60Hz supply. Now since the frequency has changed the only variable thing in the existing transformer that can change (assuming simple one input and one output) is the flux density. In its simple form we are operating the transformer (60Hz/50Hz = 1.2) at 20% lower flux density.

If the things were reversed the flux density would be 20% higher and may saturate depending on design. You can even run the transformer at 400Hz providing that the volta ...

For Metro DC traction power systems, the commonly adopted nominal voltages are 750V DC and 1500V DC. The DC substations are normally fed from a High Voltage (HV) 11 kV or 33 kV 3-phase AC network in the UK. To convert the 3-phase AC voltage to DC voltage, a modern DC substation employs a 3-winding transformer (delta-delta-star) to feed a 12-pulse rectifier (consisting of 2 x 6-pulse diode bridges, the outputs of which are connected in either parallel or series to form a 12-pulse rectifier). N ...

In the design work for a project to convert from single phase to three-phase AC power supply, where should we start implementation of the project? What problems might face in converting single phase to three phase power and how to avoid them?

We can change 1 phase power to 3 phase like any other power project; determine ...

AC power systems around the world have different frequencies. Inverter grid synchronization with phase locked loops handles frequency and phase variation. What AC power system frequencies do you expect your power converter to deal with?

"Utility side" frequencies: 25 Hz, 50 Hz, 60 Hz, 240 Hz, and 400 Hz. Include a +/- 5 percent range for each, to cover system instabilities. "Harmonic" frequencies found on incoming line: 5th, 7t ...

Static (solid state) means no moving parts inside the frequency converter, the definition is relative to rotary frequency converter which using an induction motor to achieve variable frequency.

Static frequency converter is converting fixed frequency & voltage AC power to DC to AC by inner electronic parts and components, the multifunctional inverter converts ...

You see the number of revolutions that an electrical motor turns is dependent upon the cycles per second (Hertz) that the alternating current (AC) is changing. A motor that is designed to run on 60 Hz and is plugged into a 50 Hz power supply system will turn 17% slower, the internal current will go up 17%, the amount of power (watts) will go down 17%, and the appliance mechanical cooling will be 17% less. The end result will be that the motor will be using a higher current then what the motor ...

Home appliances, like TV, speaker, lights, may work with both 50 Hertz and 60 Hertz, but some appliances especially with electric motor inside it, like air conditioner, fridge, can only work with 50Hz or 60Hz. If a 50 Hz motor working on 60 Hz power system, the motor speed will be 20% faster, then cause over temperature and shorten its service life.

We all know, most European and Asia countries po ...

What is 50Hz, 60Hz?

Alternating current (AC) is changing the direction of the current periodically; Cycle is the time of a cyclical change of the current; Frequency is the times of the current changes per second, unit Hertz (Hz). AC current direction changes 50 or 60 cycles per second, in accordance with 100 or 120 changes per second, then the frequency is 50 Hertz or 60 Hertz.

50 Hz and 60 Hz power sources are most often used in ...