1. Three-phase asynchronous drives and regenerative braking are expected to cut energy consumption by 40 %.

2. Dimensions of three-phase isolation transformer 160VA-16KVA has become standardized.

3. The invention relates to a three-phase static converter, which is applied to medium power and comprises a main circuit and a control circuit.

4. Finally, according experimental result, designed the three-phase current balance loop. The experimental results shows that the current balance is significant improved.

5. A three-phase current method is presented to measure resistive current, based on which an electrified measuring instrument for MOA is developed.

6. Same phase inverse parallel connection's three-phase bridge thyristor rectifier assembly was researched mainly the application in the chlorine-alkali industry.

7. When switching AC inductive load, like switch on single-phase(three-phase)electricmachine, the output terminal of relay may appear transient voltage that is two times of peak value of power supply.

8. The errorless of three-phase voltage and current is less than 0.5 percent.

9. This paper theoretically analyzed the three-phase inverter with LCL filter, and established the state-space mathematic model of the inverter.

10. Low voltage-high current AC/DC converter using three-phase uncontrolled rectifier needs a medium filter to remove pulsating voltage. Usually the filter is heavy and huge.

11. The three-phase harmonic power flow is directly solved by Gaussian elimination method with linear nodal voltage equation, thus there exists no convergence problem.

12. A new three-phase current source rectifier(CSR) topology and its multi-bridge parallel technique are studied in the paper.

13. The applicability of the proposed method in three-phase system is analyzed.

13. is a sentence dictionary, on which you can find good sentences for a large number of words.

14. Three-phase current unit for wet and dry vacuuming in industrial locations.

15. The three-phase unbalanced load of low voltage area will do harm to the electrical equipment and will increase the technical circuit loss.

16. First of all, current detection method for three-phase four-wire system is researched.

17. Each unit will have two powered driving cars equipped with three-phase motors and a centre trailer.

18. There are some things that you can do to help yourself get through the three-phase transition process.

19. Viewed in this light (), it will be found that the analysis of three-phase circuit is little more difficult than that of single-phase circuits.

20. The protection functions include three-section over-current protection, inverse-time over-current protection, three-phase one-shot no-voltage auto-recloser and so on.

21. This paper presents a new converter control algorithm for the direct drive permanent magnet wind generator under the unbalanced three-phase source voltage.

22. Further study of Circuit exchange regulator presents, takes the starting current as feedback signal to complete closed-loop control of soft start control of the three-phase induction motor.

23. It can be concluded from the result that the real waveform of the three-phase current and voltage can be reverted to the host by the data sampled by the sampler.

24. Furthermore the experiments were completed when the circuit was connected with a three-phase invertor.

25. Trigger pulse sent by the microcontroller to control the three-phase rectifier bridge rectifier.

26. At last, the influence of modulation index and zero-vector distribution variable on the modulation signal and output voltage harmonic characteristics of the three-phase inverter is investigated.

27. The article introduces the direct power control (DPC) principle and constitution for three-phase boost- type PWM rectifiers and analyses switching table.

28. The chaos hydrodynamic behavior of flow in a gas-liquid-solid three-phase fluidized bed was studied by deterministic chaos analysis of time series data of pressure fluctuations.

29. Planar windings manufactured by LIGA technology and silicon micromachine technology are connected with three-phase wye connection.

30. The theory analysis and experiment result show that the method adapts to the active power filter in three-phase four-wire system.

31. A novel rectifier type high temperature superconducting fault current limiter for a three-phase power system was developed in the paper.

32. To ensure that the three-phase gyroscope motor can work normally, it's necessary to measure the effective value of its AC driving signal.

33. Three-phase motor is one of broad-spectrum equipments in electrical and mechanical industry. Its driving force is the precondition that driven equipment can work normally.

34. In order to meet the need of oil testing and metering in high pressure well in desert oilfield , a three-phase separator for use in desert oilfield is developed.

35. On the basis of three-phase inverting circuit, this paper describes how to make the control method of open loop system in closed loop system.

36. This paper focuses on a three-phase prepaid power meter's program design and implementation which based on CPU card and security module ESAM.

37. Three-phase half wave controlled rectifier, hysteresis comparison mode current track control, and realization of SVPWM by S-Function are used as examples to describe the usage of the software.

38. The characteristics, principle and structure of the three-phase pipe-type tap changer are intro duced.

39. The research probes into the feasibility on low concentration wastewater treated by inner cycle of aerobe in three-phase bio-fluidized bed and the growing characteristics of biological-membrane.

40. Research on the zero-current-breaking control (ZCBC) for intelligent AC contactor and realize the micro-arc-energy breaking control in three-phase circuit.

41. Three-phase isolation transformer has been widely used in AC 50-60HZ 500V three-phase power supply voltage does not exceed the occasion.

42. A question is likely to occupy the first part of the ubiquitous three-phase IRF exchange.

43. A new DSP based hybrid power filter designed under the condition of three-phase four-wire system is presented.

43. try its best to gather and create good sentences.

44. A DC model is presented on the basis of the operation principle of a new three-phase AC/DC converter with PFC.

45. It consists of three-phase or single-phase AC voltage by the step-down and full-wave rectifier (or rectifier bridge) has been, no regulator and ping-wave large enough to require power.

46. The paper simulates a three-phase system, analyzes influence of induction motor dynamics on voltage stability, and gives methods to improve voltage stability of induction motor nodes.

47. Comparing with three-phase motor system, multiphase motor system has some obvious superiority.

48. Among the three-phase power-factor correction circuits, the full decoupling circuit is especially suitable for high power fields because of its high input power and good electrical performance.

49. Aiming at the character that zero wire exists in three-phase four-wire system, the active power filter in three-phase four-wire system has its own character on main circuit and control circuit.

50. Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.

51. This is the origin of a dynamometer. AC dynamometer is usually a three-phase AC commutator motor and dynamometer, tachometer generator combination.

52. The effectiveness can be proved in the application in the DSP control system of the three-phase induction motor.

53. This paper analyzes the principle and the application scope of three-phase three-wire system and three-phase four-wire system for UPQC.

54. A type of variable subdivision high performance driving power supply for stepmotor has been presented in the paper which is used to drive three-phase reaction stepmotor.

55. The capability and principle and the characteristics of the check-demarcate equipment for a kind ofconvenient schlep three-phase ammeter is introduced in the paper.

56. This article is the technical summarization that we developed over past two years phase-locked velocity servo loop for three-phase asynchronous motor that drives gas-dynamic free-rotor gyroscope.

57. It consists of single-phase three-phase ac voltage or by buck and whole wave rectifier voltage and filter get, no requirement, power than electromagnetic clutch power rating 1.5 times above.

58. Based on features of negative sequence components in the three-phase system, an islanding detection method based on the active negative sequence component disturbance (ANSCD) is proposed.

59. The latest three-phase clock signal control method was used to control the working state of charge pump.

60. In this paper , principle of design and study of three-phase induction motor power measuring device is discussed in theory and practice. And practical measuring unit circuit is used in the device.

61. In three-phase inverters, for cost and size, three-pole reactors and three-pole transformers are widely used.

62. Subsequently, a novel controller for DC bus voltage regulation is put forward according to the small signal model based on the instantaneous power balance in AC and DC sides of three-phase SAPF.

63. In addition, it is able to collect separate three-phase voltage and current, and uses a simple average detection algorithm.

64. It is introduced that a design idea and method which is applied to portable three-phase multifunctional volt-ampere phase meter based on high-powered DSP TMS320LF2407A.

65. As a try of temperature indirectly measure of three-phase motor, it is an extension for soft sensors.

66. At the same time the principles of triggering pulse to the three-phase thyristors is discussed, and a way using monostable multivibrator to produce the pulses has been given below.

67. The performance of the three-phase bubble column bioreactor is stable, and the mycelial pellets can be used repeatedly to effectively yield laccase by the method in large scale.

68. Instantanous reactive power theory based harmonic detecting is limited in three-phase circuit and is immune to the electric voltage.

69. Y2 series three-phase asynchronous motor: Y series motor is based on the modified design of the new motor.

70. This paper introduces the trouble shooting methods for the coil short of miniature three-phase power transformer, and points out some notable matters in the test.

71. In order to compensate control delay of active power filter (APF), a predictive current control strategy based on ADAptive LInear NEuron (ADALINE) for three-phase APF is proposed.

72. Coal pyrolysis refers to coal from solid phase into the gas and solid, liquid three-phase product process.

73. This paper determines standard uncertainty for measurement of windage and friction loss of three-phase induction motor through fitting line of least square method.

73. Wish you will love and make progress everyday!

74. The stator with three-phase or polyphase winding generates variable frequency energy, voltage following rotational speed, while the rotor has structure of permanent magnetism or electrical excitation.

75. In this paper, the instantaneous model of zero-sequence circulating current between parallel three-phase inverters with three-pole reactors and three-pole transformers is established.

76. FA series is a single-phase capacitor-start motor axial-flow type exhaust fan. FTA is a three-phase asynchronous motor axial-flow exhaust fan.

77. The multi-objective control of micro source is studied for three-phase four-wire system.

78. The system structure of this algorithm is simple . It not only fits for single-phase circuit, but also for three-phase circuit.

79. Programme using three-phase asynchronous motor synchronous transmission programme, Winding system design is based on the frequency converter and PLC.

80. In the mode of three-phase four-wire system electrical power supply, the abnormal electrical power supply will do great harm.

81. The controller includes a linear regulator circuit, ML4425 external circuit, smooth start-stop circuit, three-phase power bridge and drive circuit.

82. This paper presents a theoretical analysis on the electromagnetic process of three-phase magnetic amplifier of the transductor type with bridge rectifier output circuit .

83. Correlations for the prediction of diffuse coefficients of continuous and dispersed phases in air-water-anthraquinone working solution three-phase system have been proposed.

84. The neutral-point voltage fluctuation of three-level converter is only related to applied modulation method and three-phase current.

85. This paper brings forward a whole new scheme of three-phase adaptive reclosure, which uses the carrier channel and its signals to distinguish transient faults and permanent faults.

86. A method which detects harmonic current of three-phase system with DSP based on theory of instantaneous reactive power is presented in this paper.

87. The operating status of three-phase three-wire HAPF(Hybrid Active Power Filter) in harmonic suppression and reactive power compensation for variable-frequency motor are introduced.

88. Japan Sansha Electric Co. , Ltd. : SCR, three-phase rectifier bridge, Single-phase rectifier bridge, diode modules, single-, two-phase thyristor.

89. As a result, it is very needful to use a protector which can monitor malfunction of three-phase motor correctly and fleetly.

90. The method for reducing the electromagnetic noise from cage three-phase induction motor is analyzed and summarized. The YSKF low-noise specific motor is designed and trial produced.

91. A three-phase D. C. flash butt welder UZ-350 controlling by PLC for welding rims are introduced.

92. It drives all three-phase currents in right direction at all times and is good in dynamic response, but poor in harmonic characteristics owing to the absence of zero state.

93. The primary of a single-phase transformer is connected to one phase of the three-phase system.

94. The main circuit of the velocity regulation system is composed of the transformer, the three-phase bridge controlled circuit and the flat wave reactor.

95. An all-digital vector control system of three-phase induction motor is presented.

96. This paper describes the work done on experimental measurements andmathematical modeling of solid particle concentration distribution in a three-phase gas-lift loop reactor.

97. This paper states a detecting method for defect of three-phase current motor and it also introduces the experimental analysis result and practice utilization condition of this detecting method.

98. The new topology is known to produce balanced voltages even under unbalanced load conditions. Compared to the other three-phase four-wire inverters, its size and weight are smaller.

99. The paper introduces an integrated protection device of three-phase motor controlled by SCM 89C52, which realizes integrated and intelligent controlling of electric motor.

100. Because the bank adopts late-model components, high power density, it has not red-hot phenomena. It is pure resistive load and three-phase current balance.

101. A practical open-loop control system for the three-phase grid inverter was also developed in the work.

102. This paper introduces a kind of electric circuit which mainly consists of a peak detector and a pulse-width discriminator for protecting the three-phase alternating-current supply with loses a phase.

103. The simulation program in this paper has been applied to make digital simulation of several thyristor circuits, a DC-motor system driven by a three-phase full-wave rectifier circuit and an induction-...

104. A method for determining Hall sensor positions in three-phase multipole BLDC with concentrated winding is introduced and analyzed.

105. In the industrial power distribution system simulated and via RS-485 bus, the prototype realizes the control of general electric equipments, such as the three-phase motor, the fan, and so on.

106. DC power supply cabinet: three-phase silicon-controlled rectifier (SCR), computer digital pulse triggers plate, flat-wave inductor, L, C filter, etc.

107. In this thesis, ac-to-dc and dc-to-ac power converters are proposed to convert the three-phase varying voltage and frequency PMSG power to single-phase source with constant voltage and frequency.

108. This dissertation pointed out some problems in existing harmonics detection used in three-phase unbalanced system by investigating and studying different kinds of harmonics detection methods.

109. These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.

110. The three-phase capacitor motor is a new energy-saving motor. Compared with the traditional three-phase induction motor, it has greatly enhanced efficiency and power factor.

111. Aiming at the defects of the traditional circuit the method for the digital phase-shifted trigger in three-phase circuit is proposed on the basis of CPLD.

112. This paper introduces the judgement way of homonymous ends of three-phase windings about out of sync motor in cub modal , and analyses its principle .

113. The magnetic flux distribution in the three-phase four-frame shell-type transformer is analyzed and calculated.

114. The high-precision three-phase motor of HB Cutter, is not only high-precision , high-speed, stable-performance, but also capable of producing top-quality drawings.

115. A three-phase induction motor controller was designed according to the demand of the electric vehicle control system.

116. A novel three-phase VSG is built by three-phase autotransformer and IGBT based bidirectional switch, can easily control the types of voltage sags, sag duration, sag depth and sag phase.

117. In this paper , principle of design and study of three-phase induction motor power measuring device is discussed in theory and practice.

118. The work modes of three-phase AC/DC converter with high frequency transformer based on AC/AC matrix converter are proposed in this paper.

119. The centrifugal immersion method used for the determination of solid-water-air three-phase wet contact angle of particles is presented.

120. In accordance with superposition theorem and substitution theorem, the symmetric three-phase and asymmetric three-phase arc furnace electric power system is reduced as a one phase system.

121.

122.

123.

124.

125.

126.

127.

128.

129.

130.

131.

132.

133.

134.

135.

136.

137.

138.

139.

140.

141.

142.

143.

144.

145.

146.

147.

148.

149.

150.

151.

152.

153.

154.

155.

156.

157.

158.

159.

160.

161.

162.

163. sentence dictionary

164.

165.

166.

167.

168.

169.

170.

171.

172.

173.

174.

175.

176.

177.

178.

179.

180.

181.

182.

183.

184.

185.

186.

187.

188.

189.

190.

191.

192.

193.

194.

195.

196.

197.

198.

199.

200.

201.

202.

203.