Überblick

In perfect harmony with Power Stacks - Heatsink & mounting concepts for bipolar semiconductors

How do you react to the increasing varieties and cost pressure in your business segment, and still keep focus on the quality requirements of the market?

With our comprehensive portfolio of stack assemblies with bipolar power semiconductors we offer our support as leading manufacturer of power semiconductors.

We develop yearly a huge number of customer specific stack assemblies from a large pool of well proven cooling and stack systems. More than 20 cooling block concepts out of three product lines enable the design of power electronic assemblies for voltages up to 20 kV and currents up to 14 kA. From more than 25,000 assembly variants we realize together with you the best fitting Power Stack specifically for your requirements.

Details

The modular portfolio of our System Line covers solutions with thyristors and diodes and is optimized to the respective requirements. The design lines by basic building blocks support the requirements from semiconductors, applications and markets:

Compact Blocks

The System Line -
Compact Block

Designed for thyristor and diode modules in pressure contact or solder bond technology and defined by a potential free common compact heatsink.

Aircooled Blocks for Eco Blocks and Power Blocks

Heatsink concept	Material	Cooling block name	Eco Block Power Block	No. of PB	V_{op max} [V_rms]	Power losses*
KM10	AlMg	KM10	PB20	1	Depends on Power Block 1000-1300V	40W (S)
KM		KM11	PB20,34	3		200W (F)
		KM11	PB50,60,70	1		200W (F)
		KM14	PB20,34	3		675W (F)
		KM14	PB50,60,70	1		675W (F)
		KM17	PB20,34	3		900W (F)
		KM17	PB50,60,70	1		900W (F)
		KM18	PB20,34	3		1250W (F)
		KM18	PB50,60,70	1		1250W (F)
KM Flat		KM12	PB20,34	1		390W (F)
KM Flat		KM13	PB50	3		1150W (F)

^{* Total power losses for typical operational conditions for natural cooling (S) and forced air cooling (F) for the largest Power Block}

Liquid cooled Blocks for Eco Blocks and Power Blocks

Heatsink concept	Material	Cooling block name	Eco Block Power Block	No. of PB	V_{op max} [V_rms]	Power losses*)
KWo **	Cu	KW50	PB50	1	Depends on Power Block 1000-1300V	1200W
		KW60	PB60	1		1300W
		KW70	PB70	1		1850W
KWc		KW16	PB60	1		1200W
		KW30	PB20	3		825W
		KW34	PB20,34	3		1185W
		KW61	PB20	9		3750W
		KW65	PB60	3		3950W
		KW66	PB60	4		5250W

^{* Total power losses for typical operational conditions for natural cooling (S) and forced air cooling (F) for the largest Power Block}^{** Direct liquid cooled base plate}

Frame Blocks

The System Line -
Frame Block

Designed for thyristor and diode discs and defined by high efficient two sided air cooling with perfect electrical conductivity in an insulating plastic frame.

Air cooled Blocks for Power Discs and Prime Discs

Heatsink concept	Material	Cooling block name	Discs	Discs	V_{op max} [V_rms]	Power losses*
K017	AlMg	K0,22F	2	41, 50, 60	690	850W
		K0,17F	2			1150W
		K0,12F	1			615W
K008		K0,11F	3	41	1000	1450W
		K0.08.9F	2	50, 60, 75, (100)	2500	1450W
		K0,08.7F	2		1500
		K0,08F	2		1000
		K0,048.7F	1		1500	1400W
		K0,048F	1		1000	1400W
		K0,05.8F	1		2000	1225W
		K0,05.7F	1		1500
		K0,05F	1		1000
KE		KE02	2	120	2500	2900W
KE		KE01	1	120, 150	2500	1850W
KS	AlMg Ni plated	KS12	2	120, 150	1500	3700W
KS	AlMg Ni plated	KS11	1	120, 150	1500	1850W

^{* Total power losses for typical operational conditions for forced air cooling.}

Tower Blocks

Tower Blocks – for thyristor and diode discs up to 8 kV

Designed for thyristor and diode discs up to 8 kV and defined by highest insulation capability, highest current capability and for series connection of discs. It is recommended for Pulsed Power applications and follows a tower design.

Liquid cooled blocks for discs

Heatsink core name	Cooling block name	Discs	Disc size [mm]	V_opmax [V_rms]	Power losses [kW]*
KA20 (Cu)	KA20.2-V	2	41, 50, 60 (14 height)	690	1.5
	KA20.4-V	4			3
	KA20.6-V	6			4.5
	KC20.2-E	1			1.6
	KC20.4-E	2			3.2
	KC20.6-E	3			4.7
	KD20.2-V	2			3.3
	KD20.4-V	4			6.7
	KD20.6-V	6			10
	KD20.22-V	2	41, 50, 60 (26 height)		3.3
	KD20.24-V	4			6.7
	KD20.26-V	6			10
KA30 (Cu)	KA30-V51	2	41		3.3
	KA30-V61		48
	K50V		41, 50, 60 (75 height)
	K50V.1		41, 50, 60 (75 height)

^{*Total power losses for typical operational conditions for water cooling.}

Power Fit

Accessories for
Blocks and Stacks

Accessories for blocks

Temperature switch (Vop <=400V) and (Vop <=690V)
Save Insulation for temp switch (Vop <=1250V)
PT100 (Vop <=400V), PT1000 (Vop <= 400V), PT1000 (Vop <= 690V)
NTC (Vop <= 400V)
Magnetic firing circuits (firing transformers)
Support for optical firing circuits (fiber and driver unit)
Clamping devices
Snubber circuits (TSE)
Fuses for semiconductors
Micro switches for fuses
Hose barbs for liquid cooled heat sinks
Support for hoses for liquid cooling, water collectors and mechanical set up in the cabinet

Accessories for stacks

Magnetic firing circuits (firing transformers)
Optical firing circuits (fiber and driver unit)
Fans
Input overvoltage protection
Output overvoltage protection (DC side)
Fuses for semiconductors
Micro switches for fuses
Power rails
Support for liquid cooling cool back systems, hoses for liquid cooling, water collectors, mechanical set up in the cabinet, air stream monitoring, controllers

System Line - Details for Fittings (accessories)

Overvoltage protection circuits
RC1 - TSE snubber circuit	RC2 - input snubber bridge	ARC - AC side RC snubber	DRC - DC side RC snubber
To avoid over voltages due to the reverse recovery charge effect every diode/thyristor is equipped with a parallel RC snubber which absorbs the charge/energy and which is a damping for possible oscillations.	To absorb surge voltages of higher magnitude inrushing from line an auxiliary rectifier is mounted in parallel to the rectifier. This auxiliary rectifier has a storage capacitor connected to the output which will absorb inrushing surges. Besides this there is also a restricted functionality as TSE.	To absorb surge voltages of lower magnitude inrushing from line RC snubber are placed phase to phase on the Ac side of the rectifier (recommended for DC currents up to 200A).	To avoid overvoltage at the DC side of a rectifier a RC snubber is mounted. This is helpful if there is no capacitor as DC link close to the rectifier output.

Benefits	Applications
Reduce risks with approved heatsink and mounting concepts for all bipolar semiconductors Speed-up your development projects and reduce costs with one-stop service Achieve a shorter time to market with your products Use our excellent design-in support	Industrial AC and DC drives Rectifiers and static by-passes in UPS Wind energy systems