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ADVANTAGES OF THE PILOT GENERATOR
Excitation systems of generators including a pilot generator have a more simple and more rational design than the compound excitation systems and provide to the set a larger reliability
DESIGN OF THE PILOT GENERATOR
Magnets : Samarium Cobalt - very stable, high coercive magnetic field
Stability of the voltage in process of time
Stability of the voltage afler a short-circuit
Dismantling without voltage loss : no irreversible demagnetisation
Large number of solutions : pole number, size for the machines
Supplying of the required power to the regulator under any condition of the running of the main generator
MECHANICAL CHARACTERISTICS
Frame, endshields : aluminium, cast iron or steel according the solutions·
Machine with bearings
Mounting : IM 1001 or 3001 or 3601 (low shaft height)
Floating mounting or
Rotor / Stator fitted inside the frame or outside the main generator
Cooling : IC 00, IC 01, IC 0041 or IC 0141
Protection : IP 00, IP 23, IP 44 or IP 55
Insulation class F
Temperature rise class F or B : 100 K or 80 K
Ambient temperature : 40°C or others
According to the required speeds and mounting modes
(Rotor/Stator) : binding of the rotors (magnets) : either metallic or carbon fibre
ELECTRICAL CHARACTERISTICS
maximum economical values Three phase or Single phase
Voltage U eff. <500 V
Power S eff. < 60 kVA
Frequency F <400 Hz
Power Factor : 0 < cos phi < 1
Distorsion < 5% (No-load and Full load)
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PRECILEC RADIO-ENERGIE alternators WIND PMG equip with the wind turbine of small power. Our Permanent Magnet Generator charge the battery to ensure the power supply of the isolated places, off-line to an electrical grid local.
ADVANTAGES OF OUR DESIGN
Our design is reliable, simple and compact
Our know-how is the integration of rare earths magnets. They are very stable, with high coercive magnetic field and high specific energy
Stability of the voltage in process of time
No voltage loss even after a short-circuit
Our design allows an optimal output according to the required configuration
Dismantling without voltage loss: no irreversible demagnetisation
Large number of solutions: pole number, size for the machines which allow to consider all your demanding space requirements
Mechanical interface is optimized
Highest power-to-weight ratio
In direct drive without speed multiplier or gear
No maintenance needed for machine without bearings
Maintenance limited to bearings only for machine with bearings
ELECTRICAL CHARACTERISTICS
Maximum economical values
Three phase or Single phase
Voltage U eff. max 500 V (between phases)
Power P mech. max 20 kW
Frequency F max 400 Hz
Power Factor: cos phi 0 < cos phi < 1
Distortion max 5% (No-load and Full load)
Rated speed max 3000 rpm
MECHANICAL CHARACTERISTICS
Cooling: IC 00, IC 01, IC 0041 or IC 0141
Protection: IP 00, IP 23, IP 44 or IP 55
Insulation class F
Temperature rise class F or B: 100 K or 80 K
Ambient temperature: 40°C or others
According to the required speeds and mounting modes (Rotor/Stator): binding of the rotors (magnets): either metallic or carbon fibre
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The system consists of a permanent magnet generator and a single phase inverter to be applied to a generating set (with a gasoline engine)
As the application is in the domestic field, the stability and the quality of the generated voltage must grant the correct working and safety of electronic devices, computers, household appliances, etc.
Our aim is to realize a control system that grants a consistent inverter’s output voltage in presence of load variations. By, also, optimizing the engine performances adapting the speed in function of the output load. The fuel consumption and noise are dramatically reduced.
The generator has been realized with one three phase permanent magnet (NeFeBo) machine in order to obtain an high power density and reduced volumes; the stator’s winding is inside while the rotor runs outside.
For the generator’s dimensions see the table herewith enclosed.
The main inverter’s features are:
- Output voltage: 230V -50Hz single phase (60Hz on demand)
- THD: < 2%
- Max. continuous power: 10KW
- Max overload: 30-50% (depending on the engine) restricted in time
- Two of these devices can be linked in parallel to increase available wattage through the generator outlets.
- Performances following ISO8528 (generator-set): G4 / G3 class
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The range of STK Permanent Magnet frameless alternators addresses the applications of Wind Turbine generators in low and medium power needing the highest power-to-weight ratio in Direct Drive without gear for matching cost-effective solutions.
Each component of a wind turbine generator and wind turbine alternator requires maximum strength and precision in order to ensure perfect control over the blades.
Main characteristics of wind turbine alternators
Rated power from 200 W up to 99 kW depending on size and rated speeds.
Rated speeds from 80 RPM up to 1500 RPM.
Six overall diameters from 145 mm up to 795 mm.
Internal diameter from 56 mm up to 630 mm.
Various available voltages up to 500 Vac.
Assets of wind turbine alternators
No speed multiplier, no gear
No maintenance
Highest power-to-weight ratio in Direct Drive
Simplification of mechanical design
Easy mechanical interface
Cost optimization
Characteristics of the range of wind turbine alternators
The range of permanent magnet frameless alternators STK includes 6 sizes from 145 mm up to 800 mm available in four different lengths per size and two standard rated speeds
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AvK RANGE: DIG GENERATORS
The AvK generators of series type DIG are the result of an advanced development process in which efficient manufacturing methods as well as many years experience in the applications of such synchronous generators were utilised.
This applies to the mechanical design, electrical characteristics and control engineering properties.
The DIG series was developed with spezial focus on optimum efficiency and high stability as well as a long service life. Furthermore, the mechanical design of the machines was conceived in such a way that the customer has a high degree of flexibility at this disposel in terms of types and types of enclosure.
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We design induction and asynchronous generators for decentralised power generation. Our generators are characterised by high efficiency and reliability. Our induction generators are used in gas engines as well as gas and steam turbines.
Their power range is between 400 kVA and 25 MVA at a nominal voltage between 2.3 kV and 13.8 kV (20 kV). We also build low-voltage and high-voltage asynchronous generators for hydroelectric turbines (ten-pole to twenty-pole, 200 kVA-5,000 kVA).
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TRANSFORMER CONTROLLED : BCI16 | BCI18
* A range of 4-pole, single or 2-bearing transformer controlled generators designed for very high motor starting loads (450 % for up to 7 seconds) where fine voltage regulation is less critical.
* Engine adaptors to SAE 1, 2, 3, 4, 5 & 6, and coupling discs to SAE 61/2, 71/2, 8, 10 & 111/2, are offered on the BCI versions.
* Dedicated adaptors for Lister Petter Alpha and TS/TR engine ranges are available on the BCAI & BCLI.
* Windings are specific to output voltage (single or three phase).
* Voltages available range up to 480 V.
* IP23 enclosure protection is standard.
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Our technologically advanced products include the world's largest air-cooled turbogenerator for combined cycle application and the largest turbogenerator for nuclear application in operation today.
Alstom's product offering covers turbogenerators ranging from 40 to 1800MW for all applications, and hydro generators. Our product portfolio include:
-TOPACK: fully packaged, plug & play air-cooled turbogenerator from 40 to 150MW (50Hz) and 40 to 90MW (60Hz)
-TOPAIR: world's most advanced air-cooled turbogenerator from 150 to 320MW (50Hz) and 90 to 250MW (60Hz)
-TOPGAS: hydrogen-cooled turbogenerator with best in class efficiency from 300 to 450MW (50Hz) and 250 to 340MW (60Hz)
-GIGATOP 2-pole: powerful hydrogen/water-cooled turbogenerator, from 400 to 1200MW (50Hz) and 340 to 850MW (60Hz), ready for large clean coal power plant
-GIGATOP 4-pole: the largest turbogenerator in operation today, from 900 to 1800MW (50Hz) and 850 to 1800MW (60Hz) for nuclear power plant.
-unique retrofit technology that features proven components for ALSTOM's own equipment as well as equipment from other manufacturers.
-hydro generators and generator motors
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NPE32 4p, 3Ph/1Ph, Brushless, A.V.R. (8÷33kVA / 50Hz - 60Hz)
The new series of alternator called NPE is the result of our long experience in the power generation businness, and of diligent studies and researchers aiming to keep pace with the technological developement of an era where technology is the winning card.
The new NPE32 series has been designed to satisfy all those applications asking for an extremely compact alternator, that can be fitted in a volume much smaller than a conventional one. This will result in a smaller gen-set.
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BC GENERATOR RANGE : BCA 16
* A range of 2-pole and 4-pole, single bearing AVR controlled generators, designed specifically for application to the Lister Petter Alpha (LPA & LPW) engine range.
* Engine adaptors to suit the standard light flywheel Alpha engine or the "G Build" variant with SAE 5/71/2 coupling, or alternatively the heavy flywheel engine, are offered.
* Windings offered include 12-wire reconnectable (for single or three phase), and 4-wire dedicated single phase.
* Voltages available range up to 690 V.
* IP23 enclosure protection is standard.
Industrial Class "H" Continuous Ratings (kVA)
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HCI/HCM 636 & PI/PM 736 are ranges of 6-pole, single or 2-bearing AVR controlled generators.
Engine adaptors to SAE 00, 0 & 1/2, and coupling discs to SAE 14, 18 & 21 are offered for HCI/HCM 636.
Engine adaptors to SAE 00 & 0, and coupling discs to SAE 14, 18, 21 & 24 are offered for PI/PM 736.
Windings offered are 6-wire reconnectable.
Voltages available range up to 690 V.
Enclosure protection is IP23 as standard.
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UC GENERATOR RANGE : UCI27 | UCM27 | UCDI27
UCI/UCM 27 is a range of 4-pole, single or 2-bearing AVR controlled generators.
Engine adaptors to SAE 1, 2, & 3, and coupling discs to SAE 10, 111/2 & 14 are offered for UCI/UCM 27
UCDI 27 is a single core length higher output option, dedicated to SAE 2/111/2 or 1/14 adaptor/disc combinations.
Windings offered are 12-wire reconnectable (for single or three phase).
Voltages available range up to 690 V.
IP22 enclosure protection is standard, IP23 is optional at reduced ratings.
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* single phase 4-wire, suitable for series connection 220–240V or parallel connection 110–120V.
* centre tapped to earth (cte) offered.
* brushless self-exciting.
* voltage regulation +4 % – 6 %.
* adaption to suit standard SAE J690 A engine flange and shaft mounting (other mountings available on request including two bearings).
* terminal box support platform provided.
* robust die cast aluminium endbrackets.
* sealed for life anti-creep bearing.
* built to conform with most leading industrial standards.
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AvK RANGE
AvK - generators, reliable in service on all continents
On land in stationary plants as well as in mobile applications such as railway vehicles and cranes.
On sea on board of ships and on offshore oil platforms.
There is a wide variety of applications:
continuous power supply in isolated operation or running in parallel with the mains peak load
mains peak load operation in parallel with the mains emergency power supply for critical users, e.g. in power plants, industrial plants, hospitals, high-rise buildings
special applications such as:
frequency converters, UPS-systems, and systems solutions meeting the highest demands in terms of design and/or electrical performance
The generators are suitable to be driven by:
Diesel and gas engines; gas, water and steam turbines; power-take-off (PTO) gearboxes; windmills.
Available outputs range from 150 kVA to 30 MVA, from low voltage up to 15 kV. Frequency conversion, e.g. 50:60 Hz 60:50 Hz.
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Range available from 2000 kVA to 5370 kVA. (Low, Medium & High Voltage)
• Low Voltage to 690 V
• Medium Voltage to 4160 V
• High Voltage to 13,800 V
* Single or 2-bearing construction.
* PMG/AVR control.
* Form wound stators are standard on MV80/HV80.
* Engine Adaptors to SAE00+0, coupling discs to SAE21 & 24.
* IP23 enclosure protection is standard.
* Marine version available.
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Three-phase - Brushless - Electronic regulation (6,5÷3000kVA / 50Hz-60Hz)
The new series of alternators called ECO is the result of our long experience in this sector and of diligent studies and researches aiming to keep pace with the technological development of an era where technology is the winning card.
Apart from guaranteeing the characteristics of the preceding series, such as assuring a permanent short circuit current above or equal to 3 times the nominal current, the ECO series has also been improved. As far as its mechanical components are concerned, the end-brackets have a new shape to improve ventilation, the coupling to the prime mover is simpler and the terminal boxes are bigger to simplify the connection of the electric cables. As for the electric components, the electronic regulators are always updated to improve their performance and reliability, with the possibility to interchange them with the previous ones.
All the ECO alternators have a fixed inductor with skewed slots and a rotating inductor fitted with a damper cage. The windings have a 2/3 pitch in order to reduce the harmonic content of voltage.
The entire series is manufactured according to and complies with the most common specifications such as CEI 2-3, EN 60034-1, IEC 34-1, VDE 0530, BS 4999-5000; special versions are available on request to meet specific specifications and regulations.
MARINE applications
The Mecc Alte ECO marine range of alternators are supplied into both essential and non-essential duties,from the very small to the very large vessels. The DNV batch and line approval highlights the company’s competence in this market sector.
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Singlephase - Brushless - Capacitor regulation (1÷14.4kVA / 50Hz - 60Hz)
The "portable" generators are single phase machines, without brushes, with a high operating reliability, as a result of accurate design and years of research and experience in the construction of electric machines.
No maintenance is required because there are neither collectors nor sliding contacts. Special care has been taken about the design and performance in order to improve their connection to the engine, according to any constructive shape forecast.
The portable generators are manufactured according to the following standards: CEI 2-3, EN 60034-1, IEC 34-1, VDE 0530, BS 4999-5000, NF C 51-111, CAN/CSA - C 22.2 N°100-95; furthermore, they agree with the following European Community standards: 73/23, 89/392, 89/336.
General characteristics
Optional Voltage regulators
RCM electronic voltage regulator
A patented electronic device designed to improve precision on output voltage on capacitor controlled alternators. Thanks to this device the "portable" range reachs fine performances as far as voltage stability is concerned, regardless engine speed variation, load and temperature conditions.
ASR
The ASR allows a fine regulation of the brush machine voltage output, and assure a prompt motor starting capability to the generator. It has got an under frequency protection that can avoid troubles to the electrical machine during start transients of the engines or during an engine fault when the generator is under load.
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Three-phase - Brush - Compound regulation (5,5÷24kVA / 50 Hz-60 Hz)
The generators of this series are three-phase, with brushes and they are characterised by a compound-type regulation on the 3 phases; besides a high pickup capacity (motors startup: 1 HP X KVA) they also provide good performances under a single phase connection. With the delta connection it is possible to obtain 70 % of the three phase rated load and 45 % star connection with neutral.
They are manufactured according to the standards CEI 2-3, EN 60034-1, IEC 34-1, VDE 0530, BS 4999-5000, NF C 51-111, CAN/CSA - C 22.2 N°100-95. They are available with 2 poles in the series TR1 and TR2, and by 2 or 4 poles in the series BTO3; they can operate either at 50 or 60 Hz. These series have the stator or the rotor inclined in order to improve the wave form. The 2 pole rotors have a damping cage and all the windings of the stator have a shortened pitch to reduce the harmonic content.
General characteristics
Accessories
Ecologizer ECO1
In case of power drop, the ecologizer is a device which, by controlling an actuator, operates on the engine governor reducing its speed and allowing a reduction in fuel consumption, acoustic and atmospheric pollution.
ASR
The ASR allows a fine regulation of the brush machine voltage output, and assure a prompt motor starting capability to the generator. It has got an under frequency protection that can avoid troubles to the electrical machine during start transients of the engines or during an engine fault when the generator is under load.
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Multipolar 400 Hz
The new series of alternators at 400Hz is the result of our long experience in this sector and of diligent studies and researches aiming to keep pace with the technological development of an era where technology is the winning card. The series has been designed to meet the more technological requirements of applications such as telecommunications, cogeneration, army and aeronautics sectors.
All the 400Hz alternators have a fixed inductor with skewed slots and a rotating inductor. The windings have a 2/3 pitch in order to reduce the harmonic content of voltage. The entire series is manufactured according to and complies with the most common specifications such as CEI 2-3, IEC 34-1, EN 60034-1, VDE 0530, BS 4999-5000.
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Alternators are designed for meeting a wide range of engineering specifications and applications. They are designed for use on petrol and diesel engines in the automobile industry, on trucks, buses, tractors, construction machinery and for other purposes.
The results of technical innovations are different families of alternators designed in modern compact version with internal fans, classic alternators using external ventilator and liquid cooled alternators with additional permanent magnets between the claw poles.
Main features of Iskra alternators:
* High specific power and efficiency.
* Designed for long life, maintenance free operation under extreme conditions.
* High operating reliability is assured by optimizing the design for use in different operating conditions.
* Alternators meet very high specifications in terms of resistance to salt spray, humidity, water, mud, dust, vibrations, high and low temperatures and aggressive liquids.
* Designed to meet electromagnetic compatibility and other international directives and standards.
* Produced using ecologically sound technologies and environmentally friendly materials.
* Designed to meet a wide range of engineering specifications and applications.
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More than 50,000 1 to 20 MW POWER alternators are in use throughout the world. Whether it is a matter of supplying electrical power on-board ship, supplying electricity to deprived regions or even avoiding interruptions in a poor-quality mains supply, POWER range alternators are suitable for all drive systems, responding with certainty to the needs of the user, whatever they may be.
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THREE-PHASE SYNCRONOUS BRUSH AND COMPOUND GENERATORS
and THREE-PHASE SYNCRONOUS BRUSH GENERAOTRS WITH AUTOMATIC VOLTAGE REGULATOR (A.V.R.)
N. Poles: two or four
Frequency: 50 or 60 HZ
Range of power: from 5,0 KVA to 30,0 KVA.
The combination of dumping cage and skewed slots on the rotor guarantee optimum waveform with total harmonic distortion (THD) = 5In.
THD < 6%
Protection IP23.
Voltage accuracy: +/-5% ; +/-2% with A.V.R.
Insulation Class: H.
Manufactured in compliance with the Machine Directive 98/37, the Electromagnetic Compatibility Directive 2004/108/CE, the Low Voltage Directive 2006/95/CE (and relevant further amendments) and the following standards: CEI EN 60034-1 (IEC 34-1), CEI EN 61000-6-1, CEI EN 61000-6-
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BRUSHLESS CAPACITOR SINGLE PHASE SYNCRONOUS GENERATORS
and SELF-REGULATED WITH AUTOMATIC VOLTAGE REGULATOR (A.V.R.) SINGLE-PHASE BRUSH GENERATORS.
N. Poles: two or four
Frequency: 50 or 60 HZ
Range of power: from 1,0 KVA to 16 KVA.
The combination of dumping cage and skewed slots on the rotor guarantee optimum waveform with total harmonic distortion (THD) = 5In.
THD < 6%
Protection IP23.
Voltage accuracy: +/-5% ; +/-2% con A.V.R.
Insulation Class: H.
Manufactured in compliance with the Machine Directive 98/37, the Electromagnetic Compatibility Directive 2004/108/CE, the Low Voltage Directive 2006/95/CE (and relevant further amendments) and the following standards: CEI EN 60034-1 (IEC 34-1), CEI EN 61000-6-1, CEI EN 61000-6-3.
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Different types of integrated flywheel starter generators and integrated flywheel generators, which are intended for integration in internal combustion engines and for the use in the electric systems, where high consumption of electric energy occurs.
These starter generators and generators are designed to be built in the flywheel housing on the engine between the engine and the gearbox and replace classic alternator and starter motor on the engine.
DC integrated flywheel generators
The system operates as DC generator only. The constant output DC voltage is obtained by electronic voltage regulator. If an AC output is needed it can be performed by an additional adequate electronic inverter.
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Adding the new model TBW, brushless PTO generators with automatic voltage regulation, NSM has extended the available power range for the Tactorwatt series, with a new market segment covering the range from 42 to 72kVA.
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TURBO AND HYDROGENERATORS
Description
WEG offers complete solutions for generation and distribution of energy by supplying internationally recognized quality and state-of-the-art products.
Among all WEG products are the Hydrogenerators and Turbogenerators, which are widely used by Power and Utility Companies for their high efficiency and durability.
Technical Features
Turbogenerators
Outputs: up to 60,000 kVA
Frames: 355 to 1120 (IEC)
Voltages: to 13,800 V
Degree of Protection: IP23 to IPW56 / IPW65
Speed: 1800 rpm
Hydrogenerators
Outputs: up to 200,000 kVA
Frames: 355 to 3150 (IEC)
Voltages: to 13,800 V
Degree of Protection: IP23 to IPW56 / IPW65
Speed: 1200 to 180 rpm
GENERATORS FOR GENERATOR SETS
Description
Available up to 4200 kVA, the G line generators are mainly applied on diesel and gas generator sets as well as on steam, gas and hydraulic turbines.
They are suitable to operate on all emergency or continuous operation generator sets in industrial, commercial, marine, telecommunication, mining areas, in addition to condominiums, irrigation purposes, hospitals and others.
Technical Features
Outputs: 12.5 to 4200 kVA
Frames: 160 to 560 (IEC)
Voltages: 220 to 6900 V
Degree of Protection: IP21 to IPW55
Speed: 1800 to 900 rpm
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Description
A Mastervolt alternator is easily the most economic way to generate on board (charge) capacity. Having an alternator on board is an excellent alternative to an AC diesel, AC petrol or DC generator, but your standard alternator will not suffice. The specially designed Mastervolt Alpha alternator is ideally suited for use as a powerful second alternator, allowing you to rapidly finish charging and turn the engines off when moored. You will be surprised how economic it will be!
The Mastervolt Alternator Alpha 24/150 produces direct current (DC) for your 24V on board system to charge batteries (starter, service or bowthruster) fast and complete through its three-stage charge characteristic. This alternator can be installed on any engine type and can be mounted in three different positions. A charge regulator Alpha Pro (24V) (three-stage) is included and achieves maximum yield from minimum engine hours. A loss in voltage due to wiring and/or battery isolator is automatically compensated for.
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As the leading provider in this market segment, our strengths are situated at a power range between 500 kW and 5,000 kW, including liquid-cooled generators (induction generators, synchronous generators, variable-speed drives with dual feed induction generators and frequency converters).
The most important advantages of our scope of services are flexible customer- and plant-specific design and the quality of our engines.
Experience of many years with liquid-cooled engines under extreme conditions (in mining, since 1970) guarantees our customers the support of a partner with the most sophisticated technology and the best service network. Since 1989 we have delivered more than 4.000 liquid-cooled engines for wind power stations all over the world.
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Integrated flywheel starter generators and integrated flywheel generators are designed in different versions to meet various applications where a high consumption of electric energy is needed. They are mainly used in engines for boats, vehicles with special electric energy needs and stationary and portable power sets. Following the functions that the system can perform there are different solutions of integrated flywheel starter generator or integrated flywheel generator.
AC integrated flywheel generators
The system operates as 230 V 50 Hz or 110 V 60 Hz generator only. The constant AC output voltage and frequency independent of the engine speed is assured with an electronic converter-regulator.
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