Our field of activities in industrial electronics offers projects, planning, commissioning and maintenance of rectifiers for multiple applications.

 

We are your partner for:

 

>	Digital exciter control equipment for rotative exciters of synchonous alternators and motors of 2 to 50 MW
>	Static exciter equipment for alternators of 20 to 1200 MVA
>	Revamping of rotative exciters into static exciters
>	Starting invertors for gas turbine power stations or mixed duty equipment
>	Rectifiers for the control of pump storage plants
>	High current equipment for the supply of electrolysis and furnaces

 

Exciter equipment

Our static exciters have been in worldwide service for many years. The most frequent applications are alternators driven by gas, steam or water turbines of 20 to 1200 MVA. In order to increase the availability, the controls will be executed digitally and redundantly. The fans employed for cooling can be dimensioned, if desired, with the double capacity. We will design and elaborate solutions according to your wishes.

Our company is specialized in modernizing existing plants. We can substitute rotating exciters by static power electronics. Existing rotating exciters register remarkably high losses and have a time lag in controlling. The static execution of the exciter performs very dynamically in case of load disconnection and avoids high overvoltages. The inherent losses of a power station can be reduced notably and therefore the payback of the investment for the modification is secured.

Excitation equipment up to approx. 700A of the series TRM are supplied under the logo SEMIEXCITER for motors and alternators. For larger power plants, especially for alternators of power plants, we supply such equipment under the logo SEMIPOL..

Diagram of an exciter apparatus in modular execution as feeder for a rotating exciter

1. Main machine 2. Rotating diodes 3. Rotating exciter 4. Exciter energy 5. Excitation in short circuit 6. Actual value U gen 7. Actual value I gen

Design of a static exciter unit for small and medium machines

1. Main machine 2. Voltage transformer 3. Current transformer 4. Air gap reactor 5. Actual value U gen 6. Actual value I gen

Our supply includes the alternator measuring equipment and the alternator protection if desired.

A single line diagram of a SEMIEXCITER equipment for 100V and 600A is available as pdf file.

 

The following single line diagram shows three exciter equipments for alternators of 350 MVA each.

 

Starting inverters

For refurbishing power stations we design and supply starting inverters for gas turbine sets with approx. 4 MW and large hydro turbine sets with a starting output up to 20 MW.

Start up system for generator and turbine shaft	Start up inverter for hydro generator

For multiple alternator plants we supply commutation gear, so that one starting inverter can start e.g. 3 alternators.

 

Power electronic equipment for control of motor and alternator in pump storage plants

The following picture shows a 10 kV inverter for a synchronous alternator of 21,3 MW for reequipment of a pump storage plant. This 6-pulse inverter with intermediate circuit with constant current makes it possible to control the speed of a machine set with primary and secondary control of the line. Detailed information about the execution of the plant is available as pdf file.

 

High current plants and supplies for electrolysis and arc furnaces

We supply large DC converters for steel melting furnaces (EAF). For the chemical industry and different electrolysis plants we design water cooled rectifiers and transformers. The plants will be laid out according to the local requirements. We can supply rectifiers up to 1200 V and 40 kA in B6 connection or approx. 300 V and 60 kA with interphase transformers.. According to the requirements we can supply rectfiers with thyristors or diodes.

The central picture shows a rectifier with water cooling as a star connected rack (half a three phase bridge) for 15 kA in B6 connection.

 

Thyristor Converters

With the new series of thyristor converters Thyro-S, Thyro-A and Thyro-P of AEG we are presenting the new Thyro family which has a widespread communication property. High availability, reproducability and communicability are a basis for excellent and amply documented quality in application.

AEG thyristor converters operate, control and regulate electrical energy worldwide in industrial applications, beginning with simple tasks with low cost optimized analogous converters up to complex applications for highest requirements. AEG thyristor converters can be found where melting, heating, drying and transformation with precision and reliability are required. Apart from high product quality according to DIN EN ISO 9001, the Thyro family offers safety for application processes by experience in research and development. We can offer user specific solutions with special requirements.

Resistors

For heating equipment for the control of slipring motors, lifting magnets and other applications, our self cooling resistors are suitable. A resistor equipment consists of a casing and the built in resistors. The design varies between cast iron resistors, wire resistors , steel frames and grids. For a quotation, we need the duration of operation, type of application, the quantum of heating energy and the electrical data. For your inquiry you may use this pdf form.

 

 

 

AEG components / spare parts

AEG Industrial Engineering is supplier for industrial customers worldwide. For existing plants and applications we deliver spare parts, components and service. For AEG components and model series which are no longer available respectively discontinued we can naturally offer an alternative.

True to our motto “we take care of your power quality” we deliver:

Capacitors in various formats and building techniques, of course free of PCB and SF6. Our capacitors consist of low-loss coiled metallised polypropylene foils, which are processed to cylindric aluminium cases. The following types are available on short call:
Capacitors Three-phase high power capacitors Single phase capacitors Gas dry capacitors Gas capacitors High-performance capacitors	TDG,  TDGplus MKK PAB DPM, PRB DPM
Inductors in various formats and types, of course with low power dissipation and high durability.
Inductors Filter circuit inductors Discharge inductors	FR@  DD6NM - DD16NM
Controller and analytical devices
Reactive Power Controller Power Analyzer Capacitor protective relays Voltage control relays	RP-con 1100 BLR-CX, BLR-CM BLR-CA, BLR-CB, BLR-CC, BLR-MC, BLR-K, BLR-BK, EMM3, EMM4, EMM5 KSR, VCR, VSR
Control  components for various applications
Contactors Alternating current contactors Rotary current contactors Capacitor contactors Direct voltage contactors DC-bus contactors	LS-K K LS LS-KCW
Rail contactors	HzS-Contactors
Switch relays	RH(M)1000 RH(M)1003 RH(M)1004
Electromechanic hydraulic actuators	Eldro actuators
Transducers Measuring transformers Support current transformers Transformers Potential transformers Ring core transformers Coil transducers Busbar transformers	IL, IS, CT, EK, ES, ZK, ZS, EY, ZY, ZYE, EYS, K, RK, PRK, SRY, DY, RY
Thyristor controllers Control devices for process engineering	Thyro-A, Thyro-P, Thyro-S, Thyro-C, Thyro-M
Rectifier modules / slide-in Converter mudules / slide-in Battery charging devices Compact UPS	AC1000, AC2000, AC2800, AC 7000 DC 500, DC1000, DC2000,  DC 3000
Compensation equipment Dynamic compensation Passive filters, filter circuits Active filters	AE TDG MKK AcF
Drive technology
Three phase ac motors Asynchronous motors Squirrel-cage motors Short circuit rotors Direct current motors Slip ring rotors Static unbalance motors Vibration motors	A, AM, AMBX, EAM, AJ, AN, AR, AU, AW, A5E, A5L, CA, DA, KA, KA, G, GC, GK, GS, G5L, G5K, UVB, UVC, UVD, UVE, UVF, UVG, UVH, UVL, UVN, UVP
Generators Generator controls	DKBH, DKBL TR5D
Power converter Frequency inverter	Microsemi, Minisemi, Maxisemi, Powersemi, Modulverter, Microverter, Miniverter, Maxiverter, Monoverter, Multiverter
Autotransformers Softstarter
Liquid starters
Low voltage / medium voltage switching equipment
NH protection bars Low voltage switches Disconnectors Isolator switches Load isolator switches Protection load isolator switches Motor protection switches	HSE, HSEV, DILOS, FULOS, LTSiSt Mbs
Circuit breakers Isolator switches DC voltage circuit breakers DC voltage isolator swiches Direct current switches DC fast breakers	ME00, ME07, MEG, MEGT, MEY-Rapid, Gearapid, GEARAPID Gerapid, GERAPID
Medium voltage circuit breakers Vacuum circuit breakers Furnace breakers Disconnectors Disconnecting switches Load isolator switches Protection load isolator switches	VA, VAA, VXA, VXB VXC, VAH,... AL, BAL
Electronic components
Protection devices Grid protection Line protection Transformer protection Generator protection Differential protecting systems	PQ721, PQ731, PQ741, PQ751, PS421, PS431, PS451
Electronics Electronic cards Electronic circuits	MCU, CCU, DAP, DEP, Logidyn DK
Widerstandsgeräte Ohmic resistors Rotor resistance
Thyristors Diodes Insulated-gate bipolar transistors (IGBT) Thyristor modules Diode modules Powerblock Presspack	T, D, TT, DD, DT, TD

 

We take care of your power quality