它是以三相波形整体生成效果为前提，以逼近电机气隙的理想圆形旋转磁场轨迹为目的，一次生成三相调制波形，以内切多边形逼近圆的方式进行控制的。经实践使用后又有所改进，即引入频率补偿，能消除速度控制的误差；通过反馈估算磁链幅值，消除低速时定子电阻的影响；将输出电压、电流闭环，以提高动态的精度和稳定度。但控制电路环节较多，且没有引入转矩的调节，所以系统性能没有得到根本改善。

1" Sanitary Alfa Laval Actuated Valve with ThinkTop E7

ALFA LAVAL AH11-GC-E-1.5-?T316-HNDL NSPP AH11GCE15T316H?ND

Alfa Laval Valve Basic Top Type SRC 1 3/8" dia (3414)

Alfa Laval Valve Basic Top Type SRC 1 3/8" dia (3415)

Alfa Laval Valve Basic Top Type SRC 1 3/8" dia (3416)

Alfa Laval Valve Basic Top Type SRC 25mm o/o (3410)

Alfa Laval Valve Basic Top Type SRC 25mm o/o (3411)

Alfa Laval Valve Basic Top Type SRC 25mm o/o (3412)

Alfa Laval Valve Basic Top Type SRC 25mm o/o (3409)
Alfa Laval SattCon OP45 SCOP45/DX485G, Used, SCOP45DX485G, Fast Shipping

Alfa Laval SattCon OP45, Used, OP45SATTCON, Fast Shipping

Alfa Laval SattCon OP45 SCOP45/DX232, Used, SCOP45DX232, Fast Shipping

Alfa Laval Valve *New* SRC-W-3A-3-7-2?0-J


40504 New In box, Alfa Laval 9630856472 Replacement Kit-Seal


Alfa Laval SattCon RAM30T 940-120-211, New, RAM30T, Fast Shipping

Alfa Laval SattCon CU05-25/SD32D Slimline, Used, CU0525SD32DSLI?MLINE, Fast

Alfa Laval SattCon SC05-20B, Used, SC0520B, Fast Shipping

Alfa Laval XACV-B/24, Used, XACVB24, Fast Shipping

Alfa Laval Valve Basic Top Type SRC (3413)

Alfa Laval Saunders Multiport Diverter Valve w/ 5 ports

Alfa Laval SattCon CU32, Used, CU32SATTCON, Fast Shipping

Alfa Laval SattCon CU33, Used, CU33SATTCON, Fast Shipping

Alfa Laval SattCon CU35, Used, CU35SATTCON, Fast Shipping

Alfa Laval SattCon ROM30 512K, New, ROM30Sattcon, Fast Shipping

Alfa-Laval: NB 26-24 (B21, B21) Heat Exchanger. No: 5180391 W

ALFA LAVAL GHK11 G&H (3 WAY SANITARY VALVE) 3" SST NEW

Alfa Laval SattCon SD24D Slimline, Used, SD24DSLIMLINE, Fast Shipping

Alfa Laval SattCon SC05-10B 976-001-003, Used, SC0510B, Fast Shipping

ALFA-LAVAL SMU 2A SPEED MONITORING UNIT 551-131-20


ALFA LAVAL ECA50 C ECA50-0100 SATT PROCESS CONTROLLER DIGITAL ABB 498047 40760


Alfa-Laval 1-Way A3 Plug Valve w/Tri-Clamp Ends SS 

Alfa Laval SattCon IDPN, New, IDPNSATTCON, Fast Shipping

ALFA LAVAL TT50-31 USPP TT5031

Alfa Laval SattCon SD32D, Used, SD32DSATTCON, Fast Shipping

ALFA LAVAL DE LAVAL ENAMEL PORCELAIN SIGN

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Alfa Laval SattCon ODP.8, Used, ODP8SATTCON, Fast Shipping

Alfa Laval SattCon ODPLD, Used, ODPLDSATTCON, Fast Shipping

Alfa Laval MBOX2072, Used, MBOX2072, Fast Shipping

Alfa laval Salinometer DS20 Type DS 20 Rev. 2

ALFA-LAVAL LKB53A-6700-4A?-E-S

ALFA LAVAL LKLA-TNC NSFP LKLATNC

ALFA LAVAL THINK TOP 9612578901 *NEW IN BOX* 


Alfa Laval - Heatpac Control Mod. 31830

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Alfa Laval Sauders SS Valve System w/ M0A-N0M12-00 EC Piston Actuator 8 Bar max.


40508 New-No Box, Alfa Laval 9630048053 Pump Rotor 3L SS 10/130


39785 Old-Stock, Alfa Laval Seperation Inc 74693-00 Konsol Bracket, 3/8" Thread


ALFA LAVAL 550557-80 USPP 55055780

Alfa Laval SattCon DX485G, Used, DX485GSATTCON, Fast Shipping

2" ALFA-LAVAL KOLTEK 3AH 52-52 STAINLESS STEEL VALVE
*** FOOD GRADE ***

G&H Sanitary Remote Controlled Valve Alfa Laval Flow Tpye SRC 3"

ALFA LAVAL 700-P-012-K USPP 700P012K

ALFA LAVAL LKLANO NSPP LKLANO

ALFA LAVAL TS-150-B-01 USPP TS150B01

Alfa Laval Saunders 3" ID shutoff Valve late model great condition.

ALFA-LAVAL CBH25-50H (F1, F1) BRAZED PLATE HEAT EXCHANGER ~NEW~

25100 NEW ALFA LAVAL 9612129609 Pump Repair Kit 35mm K


ALFA LAVAL SRC-10 USPP SRC10

38495 New-No Box, Alfa Laval 9611416306 Actuator, 4"


ALFA LAVAL A-080M8200 K100200 ACTUATOR ECX D/A FOR VALVE 3 EPDM SAUND
ALFA LAVAL 9612129609 NSFP 9612129609

ALFA LAVAL 9612-6494-01 USPP 9612649401

ALFA LAVAL KMH5100-9626 USPP KMH51009626

ALFA LAVAL B7MP-3-304 NSPP B7MP3304

32864 New-No Box, Alfa Laval 9880-00 Bearing Sleeve 3-3/8" ID, 5" OD


ALFA LAVAL 70-212-00 NSFP 7021200

ALFA LAVAL 74565-00 NSFP 7456500

ALFA LAVAL 2CMP-3-316 NSPP 2CMP3316

Alfa Laval DXD DUB-SL, Used, DXDDUBSL, Fast Shipping

10195 NEW Alfa Laval 3149205511 Seal Set


ALFA LAVAL 32263-0814-6 NSPP 3226308146

ALFA LAVAL 32263-0914-4 NSPP 3226309144

ALFA LAVAL 32263-0914-6 NSPP 3226309146

ALFA LAVAL 32263-1804-6 NSPP 3226318046

ALFA LAVAL 17-109-U25 NSPP 17109U25

ALFA LAVAL 32330.1419.3 NSPP 3233014193

ALFA LAVAL 481295 NSPP 481295

ALFA LAVAL 9611926737 NSFP 9611926737

ALFA LAVAL 06-532072-01 NSPP 0653207201

ALFA LAVAL 9611-92-4055 NSFP 9611924055

ALFA LAVAL 9611-92-4055 NSPP 9611924055

ALFA LAVAL 9611-92-4055 USPP 9611924055

ALFA LAVAL 9611-92-4058 NSFP 9611924058

ALFA LAVAL 9611-92-4058 NSPP 9611924058

ALFA LAVAL GHK11-GC-POL-2 NSPP GHK11GCPOL2

ALFA LAVAL GHK76MH5000V NSFP GHK76MH5000V

ALFA LAVAL MB-00004 NSPP MB00004

ALFA LAVAL PC14081-2 NSFP PC140812



Alfa Laval/Saunders Butterfly Valve MXMP112TC 20"

Alfa Laval / Saunders Butterfly Valve / Gear MYNB 112TC

Alfa Laval GHPD 332RF Pump

Brand New Alfa Laval Tri Clover A3 Sanitary Pump

ALFA LAVAL GHPD-322 POSITIVE DISPLACEMENT ROTARY PUMP

ALFA LAVAL LKH-70/230 40hp CENTRIFUGAL PUMP 

Used- Alfa Laval Thermal Plate Exchanger, 59.25 Square

Alfa Laval Plate Heather Exchanger Model M6-FD

11109-008 Alfa Laval model 10BFG plate style heat exchanger

ALFA LAVAL LKH-45/165 CENTRIFUGAL PUMP 
Alfa Laval / Saunders Butterfly Valve 4"

ALFA LAVAL,3", 1X2 PLUG VALVE

Alfa Laval actuated Valve 7715-10m-14p-2?x15-e-316l-pl

ALFA LAVAL,3", 1X1 PLUG VALVE

Alfa Laval Air Actuator 

Alfa Laval Rotary Pump

ALFA LAVAL SERVO DRIVE 31830-3350-1

ALFA LAVAL,2" 1X1 PLUG VALVE,STAINLES?S STEEL

Alfa Laval Think Top Replacement Control Top

45BY-3-02-SFY SPRINGER PARTS FOR ALFA LAVAL VALVES - BALL - OEM P/N 620377

ALFA LAVAL CPM-D-60-GC-?3 POL CONSTANT PRESSURE MODULATING INLET VALVE-NEW 
882303760 CPM-I-D60 WITH MANUAL AND CONFORMITY CERT!!!

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ALFA LAVAL FLOW SWITCH NSN 5930-01-448-26?32 NEW

ALFA LAVAL A3 PLUG VALVE 4"


TRI-CLOVER ALFA LAVAL BUTTERYFLY 3 WAY SHUTTER VALVES AIR OPERATED ETC

ALFA LAVAL SERVO DRIVE SS5

Alfa Laval Saunders DN 50 Valve

41212 Old-Stock, Alfa Laval Seperation 98 01 B Liner, 7-11/16" ID, 21-9/16" OD


SS ALFA LAVAL 1-WAY A3 PLUG VALVE 2"


45BY-3-02-SFY SPRINGER - BALL - ALFA LAVAL P/N 620377 VALVE REPLACEMENT BALL

Alfa Laval Refrigerant Heat Exchanger Type CB14-14H

ALFA LAVAL FILTERING DISK, FLUID PART # 1800-03365 NSN: 4330-14-479-43?89

ALFA LAVAL,PN10,1X1 2" PNUEMATIC VALVE,STAINLES?S STEEL

Alfa Laval Refrigerant Heat Exchanger, Model: CB76 - 40H S54

Alfa Laval Saunders Diaphragm Valve DN50 1.75" 34598 SS

Alfa Laval Saunders DN 25 Valve

2 Inch Tri Clamp Diaphram Valve Alfa Laval Saunders Stainless Steel USDA/A3/3A

ALFA LAVAL,SRC-W-3A?-2.5-9-20H W/HD SPRING,PLUG VALVE

45BY-21/2-02-S?FY SPRINGER - BALL - ALFA LAVAL P/N 620262 VALVE REPLACEMENT BALL

1.5 Inch Tri Clamp Diaphram Valve Alfa Laval Crane Saunders Stainless Steel 316L

1.5 In Valve Tri Clamp Alfa Laval Saunders Diaphram Stainless Steel 316L 

ALFA LAVAL,SRC-W-3A?-2.5-7-20H W/HD SPRING, VALVE

Alfa-Laval model NB26-34H brazed plate heat exchanger

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Alfa Laval Saunders EC Piston Actuator

ALFA LAVAL SAUNDERS EC PISTON ACTUATOR

45BY-21/2-02-S?FY SPRINGER - BALL - ALFA LAVAL P/N 620262 VALVE REPLACEMENT BALL

ALFA LAVAL LKLA PNEUMATIC VALVE WITH 2 1/2" BUTTERFLY


ALFA LAVAL,3"X 3"- 4" STAINLESS STEEL PNUEMATIC VALVE

Alfa Laval Heat Exchanger

Alfa Laval 10939820 Refrigerant Heat Exchanger

Caterpillar/Al?faLaval Plate Heat Exchanger Plate As-New


Caterpillar/Al?faLaval Plate Heat Exchanger Plate As-New


TRI-CLOVER AIR OP VALVE SANITARY ALFA LAVAL 

New Alfa Laval A10b Heat Exchanger Channel Plate 304 SS

Saunders - Via Alfa Laval air actuator

Alfa Laval Tri Clover TSK5 Lip Seal Housing #2 

Alfa Laval Tri Clover TSK3 Lip Seal Housing 

Alfa Laval Tri Clover TSK5 Lip Seal Housing 

Alfa Laval Saunders Module Remote Indicator

Alfa Laval Saunders EC Piston Actuator 8 bar Max Spring to Close 1/8" NPT (NEW)

Alfa Laval Tri Clover DuraMetallic Mechanical Seal Kit 

Alfa laval 3/4 Hook Bolt for spiral heat transfer 737346181


NOS! ALFA LAVAL TEMPRESS RATE OF FLOW INDICATOR 543269-01 6680012775972


ALFA LAVAL SLEEVE PART # AB281-1 NSN: 4330-00-339-32?14

2x Alfa Laval Tri Clover Rotary Assembly 55mm Pump Part
For the TSR 5 Pumps, 160-70 / R7400-135 

Alfa Laval Oil Pressure Switch M52363 1000psi 
Custom Control Sensors Inc. P/N 610G2008 for Alfa Laval

NOS! ALFA-LAVAL PUMP SEAL KIT 31490-0551-5 GHP-601


NOS! ALFA LAVAL SHUT OFF VALVE P/N 535199-02 53519902


Alfa Laval Tri Clover Rotary Assembly 55mm Pump Part

Van Air Systems Regenerative Dryer Model: HB-900 with Ametek Blower

AMETEK AMETEK 241CEII-1A USPP 241CEII1A

Ametek RK-200 dead weight tester, certified


Ametek RK-200 dead weight tester, NIST-certified


AMETEK PA40894024589 *CALBRTD*

Ametek MK-100 dead weight tester, NIST-certified


Ametek Gemco 1991A116R12TX Quik-Set IV High Speed PLS

Ametek Gemco 1989A16R12SEKX Limit Switch NEW-NO BOX


AMETEK PKII PK2-MED-1B SELF-REGULATIN?G PNEUMATIC DEAD WEIGHT TESTER PK2 mm Hg

XANTREX SORENSEN AMETEK XDC100-60 XDC 100-60 100V 60A DC POWER SUPPLY GPIB

AMETEK PKII PK2-MED SELF-REGULATIN?G PNEUMATIC DEAD WEIGHT TESTER PK2 mm Hg

AMETEK RK 1100WC PNEUMATIC DEADWEIGHT PRESSURE TESTER NIST TRACEABLE EXCELLENT 


Sorensen / Power Ten # P63C-28360J Variable DC Power Supply, Ametek 600W to 30kW

1 AMETEK 1995-L-6M-X MICRO-SET (E6)

Ametek PKII(2) Pneumatic Dead Weight Tester PK-II-30-SS

AMETEK 4000 PHOTOMETRIC ANALYZER

JOFRA AMETEK 650SE 122-1202degF 50-650degC Temperature Calibrator

AMETEK Dycor RGA, P/S HQ100F, M100F and Probe Head

AMETEK PA4089504241 *CALBRTD*

AMETEK PA40892724237 *CALBRTD*

AMETEK PA40894024503 *CALBRTD*

Dycor Ametek CG1000RTP Oxygen Analyzer , Applied Materials 

Applied Materials, Ametek CG1101 Oxygen Analyzer 

AMETEK ZF2-480-60-UB-?01 USPP ZF248060UB01

LOT OF 4 AMETEK/Applied Materials 15-100387-01N REV A 


AMETEK ZF248060NC01 USPP ZF248060NC01

NIB AMETEK 1995-A-6M-X-X PROGRAMMABLE LIMIT SWITCH 6OUTPUT RELAY 10AMP 1995A6MXX


AMETEK 11KB36013300 USPP 11KB36013300

AMETEK 11KF7305-AGBL USPP 11KF7305AGBL

GEMCO AMETEK 1995-B-6M-P-X 1995-B6MP 1995B PLS/BRAKE MONITOR MICRO SET QUANTITY

AMETEK HLG-12 DEADWEIGHT TESTER 25-1000 PSI (CERTIFIED)


Ametek PK-30 dead weight tester, NIST-cal'd, guaranteed