What did we do?
“We spoke and meet with a vast number of company representatives at the conference. We were able to qualify leads from at least 10% of attending exhibitors, thus making this one of the most successful trade shows in MH&W International 46 year history. This speaks volumes about our products and the industry’s acceptance of our capabilities as a resourceful manufacturer’s source of supply,” said Bill Wilson, National Sales Manager- MH&W Renewable Energy Division.

How did we do it?
We displayed a variety of assemblies that are practical application solutions, such as the following:

Chang Sung MegaFlux Block Cores for Inverters: Block cores manufactured in the 26 permeability MegaFlux materials are advantageous in building DC/AC smoothing chokes (reactors) for the inverter circuit.  The benefits of using block cores in 26 perm MegaFlux are: extreme inductor design flexibility, ease of manufacture using large gage wire/large foil conductors, large Bsat and DC bias characteristics, reduced reactor size, and reduced operating temperature.  Blocks are available in sizes up to 80mm in length.

Magnetec Cool Blue Cores: Cool Blue cores from Magnetec totally absorb unwanted asymmetric current, which runs over sensitive parts like bearing, gearboxes and couples into electrical control systems of a wind system.   As a consequence of parasitic currents, the bearings corrugate, followed by an electrical breakdown of the lubrication, finally causing early failure of the generator/motor.   The result of the Magnetec cores to the system is increased service life of motor bearings, and reduced maintenance and stoppages.  Reliability of the system is rising because of reduced radiated emissions. Costs are down because all-steel bearings can be used instead of super high cost ceramic/hybrid bearings. No effect on manufacturer’s warranty.

What Next?
The AWEA WINDPOWER 2010 Conference floor was over 369,000 square feet (six football fields) by 100,000 square feet (almost two football fields), larger than the previous year. The nearly 1,400 exhibitors came from 48 states, as well as 22 countries including Germany (50+ exhibitors), Canada (40+ exhibitors), Denmark (30+ exhibitors), China (30+ exhibitors), and Spain (25+ exhibitors). Totally unbelievable but WINDPOWER 2011 is off to a great start with three-fourths of the show floor already sold. VERY EXCITING!

Remember at MH&W, we don’t just sell you magnetic products – we provide value-added services which often include making cost and/or energy efficient recommendations to assist with the design of your product. Our engineers are available to work with your engineers, and a customer service team to help make your planning easier…from start to finish, we will ensure your focus is our focus. As a team resource, we’re here to get the job done.

MH&W International is offering a solution to the problems of high perm ferrite and the shortage of high perm ferrite with our Nanocrystalline toroidal cores for common mode chokes. There are significant advantages of Nanocrystalline over 15K & 10K perm material.

	10K Perm Ferrite	15K Perm Ferrite	Nanocrystalline
Saturation Flux Density	400 mT	360 mT	1,200 mT
Curie Temperature	120°C	105 °C	600°C
Core Loss	High	High	Low ( >110W/Kg)
Magnetostriction/Vallari Effect	Susceptible	Highly Susceptible	No apparent effect

Nanocrystalline is available with Permeabilities of 1,000 to 90,000.

MH&W keeps stock of some of the more common sizes of Nanocrystalline toroids. Here is a table of the most prevalent Nanocrystalline toroids.

Part Number	OD	ID	TH	Aℓ (nH)	Aℓ Freq	Aℓ min	Aℓ max
M-003	25	16	10	67000	10KHz	45000	89000
M-061	25	20	10	10800	10KHz	6600	15000
M-062	25	16	10	20550	10KHz	13700	27400
M-076	20	12.5	8	14600	10KHz	9700	19500
M-224	24	15	8	15500	10KHz	10000	21000
M-449	25	16	10	4900	100KHz	3800	6000
M-450	30	20	10	4750	100KHz	3500	6000
M-306	16	11	5	8850	10KHz	5900	11800
M-307	20	15	5	6800	10KHz	4500	9100
M-308	25	20	5	5250	10KHz	3500	7000
M-309	30	25	5	4250	10KHz	2800	5700
M-310	40	35	5	3150	10KHz	2100	4200

Graphs (click thumbnail for larger image):

1. Saturation as a Function of Temperature
   
2. Permeability as a Function of Temperature
   
3. Permeability as a Function of Frequency
   
4. Similar Impedance with Smaller Core
   
5. Typical Impedance 30mm, 22 Turn Coil
   

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WINDPOWER 2010 Conference and Exhibition is the largest in the world featuring over 15,000 attendees and over 1,200 exhibitors. We invite you to leverage this opportunity to learn about the latest industry developments and technologies, review new products and services in the expansive exhibit hall and network with leading industry decision makers.

Seeing Is Believing! There is nothing like seeing the leading solutions in action to understand how they can work for you. This may be one of the best events you can attend all year.

Register today by visiting the website at http://2010.windpowerexpo.org/registration.cfm.

MH&W will be exhibiting the latest products from the following manufacturers at WINDPOWER 2010

• Chang Sung MegaFlux Block Cores: Block cores manufactured in the 26 permeability MegaFlux materials are advantageous in building DC/AC smoothing chokes (reactors) for the inverter circuit. Blocks are available in sizes up to 80mm in length.
• Magnetec Cool Blue: Cool Blue cores from Magnetec totally absorb unwanted asymmetric current, which runs over sensitive parts like bearing, gearboxes and couples into electrical control systems.
• TDK and EPCOS: MH&W International offers the broadest range of ferrite core materials and shapes with our long standing relationships with TDK Corp and EPCOS Corp (now TDK-EPC). Our ferrites are used in everything from powering control circuits to high switching frequency, high power transformers and output chokes.
• Nesscap: MH&W International has recently teamed up with Nesscap Co. to offer Electric Double Layer Capacitors, better known as Ultracaps. Nesscap is a world leader in the manufacture of Ultracaps with many patents.

For more information, contact Bill Wilson, bwilson@mhw-intl.com or 201-891-8800 ext. 578

Download this announcement in PDF Format here.

Recent Design Win with Major Wind Nacelle Manufacturer Celebrated in Mahwah

MH&W International, Corp. is celebrating yet another design win by extending the life of bearings in wind turbine generator drives. A major manufacturer of wind turbine generators has recently awarded MH&W International, Corp. a contract to supply Magnetec Cool Blue Nanocrystalline cores for all new wind systems.

“Our customers are experiencing an extended bearing lifetime of more than 10 times in real applications by using Cool Blue Cores from Magnetec! This is saving our customers scheduled and unscheduled down time, cost of components, and eliminating the safety factor of having to repair and replace due to damaged bearings within the generator”, says Bill Wilson National Sales Manager of MH&W Renewable Energy Products division. “This is a very exciting time for us. Our engineering and sales team has once again demonstrated that they know what it takes to provide solutions to the wind energy market…MH&W and Magnetec are clearly the leader in North America”.

The MH&W team has played a key role in winning this contract by extending bearing life on major wind turbine generators with the use of Magnetec’s Cool Blue cores. Cool Blue cores totally absorb the unwanted asymmetric current, which runs over sensitive parts like bearings, gearboxes and couples into electrical steering lines. As a consequence of those parasitic currents, the bearings corrugate followed by electrical breakdown of the lubrication which soon causes an early failure and standstill of the generator. The result of the Magnetec cores to the system is increased service life of motor bearings, and reduced maintenance and stoppages. Reliability of the system is rising because of reduced radiated emissions, too.

Service, repair, and power owner companies are now installing Cool Blue Cores to extend their service contracts for the wind turbine, too.

MH&W will accept orders for the bobbins and mounting hardware as a last time buy.  All orders must be submitted to MH&W no later than June 10, 2010.

Delivery of product based on the last time buy must be completed  within 10 months.  Therefore all bobbins and mounting hardware must be shipped from MH&W by April 10, 2011.  All last time buy orders are non-cancellable, non-returnable and cannot be pushed out beyond April 10, 2011.

MH&W International will be sourcing equivalent bobbins and mounting hardware from alternate sources where there is an existing equivalent product.  We have already identified many items that are functionally the same.  If an equivalent cannot be readily found, MH&W will investigate tooling the items in order to continue a smooth flow of equivalent product.

The complete list of discontinued parts can be found at http://www.mhw-intl.com/tdk_xbobbins.htm. This list will be updated in an ongoing manner as new and alternative parts are identified.

MH&W recently joined the American Wind Energy Association (AWEA) to further their expanding knowledge of the rapidly growing wind turbine industry. In the past three years MH&W has become the supplier of components used to extend the life of bearings used in wind turbine systems, core materials for inverters and inductors, and conversion to the power grid. With over 1,900 members & advocates, AWEA is the hub of the wind energy industry.

AWEA is a national trade association representing wind power project developers, equipment suppliers, services providers, parts manufacturers, utilities, researchers, and others involved in the wind industry. In addition, AWEA represents hundreds of wind energy advocates from around the world. AWEA promotes wind energy as a clean source of electricity for consumers around the world. Its mission is to promote wind power growth through. advocacy, communication, and education. More information on AWEA can be seen at http://www.awea.org.

Mahwah, NJ March 1, 2010 – We are pleased to announce that Telicia Craft has officially joined MH&W!

“Ms. Craft will support and grow our traditional power market, as well as our new Renewable Energy Products division. She will work closely with MH&W customer service, MH&W sales; MH&W field sales representatives, and suppliers to assist customers with our excellent products in these markets.”

Telicia Craft graduated from University of Phoenix with a MBA in Marketing, BS degree in Telecommunications Management from DeVry University, and with a BS degree in Business Administration from Limestone College, Greenville SC. Prior to accepting the position, she served as Sales and Marketing representative Arrow Electronics Atlanta, GA. Prior to Arrow, she served as Client Sales Manager, OmniVue Business Solutions in Atlanta, Ga. She brings experience and proven track record of success in the sales and marketing field, which will be invaluable in meeting the departmental goals and objectives.

I am confident that Telicia will be an excellent match for this position and a strong asset to the Sales team. Telicia will be located in the Atlanta, Ga. Sales office, and can be reached at 201-891-8800 x 583 or teliciac@mhw-intl.com. Please join me in welcoming her to MH&W International, Corp.

As a material review, Chang Sung was the first powder core company to introduce a Silicon-Steel powder for, essentially replacing Silicon-steel laminations in transformers.  The advantage of the MegaFlux is lower core losses and a higher operating frequency.  The MegaFlux can also be pressed is varying shapes, the most common are the Toroid, EE core, and Blocks.

Chang Sung has recently introduced the toroids in the sizes from four (4) inch to six (6) inch.  These toroids are summarized in the following table.

The most common Value of the MegaFlux for alternative energy is the 26 perm material.  The graph below is the Graph showing the DC Flux for the 26 Perm MegaFlux material.

APPLICATIONS

Generic Application – Boost Reactor Transformers ( Step-up) and Inverter Reactor