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How many kinds of braking modes are there in AC motors? What are the characteristics of each?
- Energy consumption brakingWhen the motor cuts off the AC power supply, a DC power supply is added to any two of the stator winding to generate a stationary magnetic field, and the stationary magnetic field is generated by the inertia rotation of the rotor to produce a braking torques
How can i setup regenerative braking on an AC motor?
- electric powered locomotives can feed their braking ability lower back into the overhead wires (as long as there is yet another prepare interior the device to consume the potential). In a diesel-electric powered locomotive you do not have everywhere to place the extra potential (different than slightly for prepare heating/air-conditioning on passenger trains), so which you in lots of instances warmth up resistor banks with the electrical powered ability from the vehicles, even however this permits you to't re-use the potential. you may fee a battery and use that ability lower back to strengthen up the prepare later, then you rather had a hybrid locomotive, i've got self assurance they are sorting out that for the period of a few shunters yet there's no great scale application yet. yet another a danger answer for short term potential storage could be flywheels. In a diesel-hydraulic engine you will have a retarder (to boot to friction brakes) which will warmth up oil while braking.s
does a dc motor make ac or dc?
- Dc motor uses DC power to produce mechanical power, ie, it rotates. I think you mean using a DC motor as a generator. If it is a permanent magnet motor, it will produce DC power when you spin the shaft. But not as much as a generator designed for that purpose. .s
What are the characteristics of ac synchronous motor and list a few of its applications?
- * Constant speed usage for a class B NEMA design (standard industrial duty) @ ~100-200 motor staring torque.s
Do the same rules for correcting power factor of AC motors also apply for correcting power factor of AC ?
- Low Power Factor is due to inductive loads. AC has compressor motor fan motor which are inductive loads. Similarly AC solenoids are inductive coils. Hence to correct PF of AC or solenoids, a suitable capacitor may be connected. Ketan Ks
my 94 plymouth sundance is not blowing air on ac,heat or defrost changed blower motor still doesn't work?
- You are probably going to need some help, but maybe not. You need to make sure the motor is getting power. Do that first and get back to us... If the motor is not getting power, look at switch and wiring....FUSE? You didn't really help us help you much.s
torque ratings of 3 phase 480 volt ac motors controlled by vector vfd ?
- A vector or even a sensorless vector VFD should be capable of operating a motor from base speed right down to or very nearly to zero speed at 150% of rated torque as calculated from the nameplate speed and power ratings. The current required to produce 150% of rated torque should not exceed 150% of the motor nameplate current. The minimum speed at which the motor can produce rated torque continuously and the maximum time that rated torque can be maintained at stall depends on the specific motor design, particularly the cooling provisions. Motors equipped with a separately powered cooling fan can typically sustain rated torque at zero speed continuously. Manufacturers of VFD rated motors usually have rating curves that show the motor torque vs. speed continuous and intermittent capability.s
What would be the concerns of using an electric motor as a motor and also a dynamo?
- As already said, an AC motor can#x27;t generate energy by it self. But a DC motor (with magnets) will do the job, it#x27;s actually made the same way a dynamo is. Tips you may need: 1 bypass any built in controller circuit when quot;dynamoquot;, re-switch it on when quot;motorquot;. 2 when dynamo the current you#x27;ll get will be pulsating when not alternate, so use a diode Bridge and a capacitor before the battery charger. 3 use a proper battery charger! Don#x27;t plug your battery straight away! 4 If the regeneration cycle (dynamo) is sufficiently longer than use cycle (battery powered), it will work as long as components are functioning.s
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