Simulations with Matlab / Simulink show that,the method eliminates the influence of nonlinearity and unbalanced load on power system and makes the input power factor equal to 1.Furthermore,the series compensator isolates the effect of network voltage variation on load voltage and the shunt compensator provides balanced and sinusoidal rated three-phase voltages to load.

This paper presents a reasonable method to determine the contributions of reactive currents of each shunt load to the total reactive current supplied by PCC. If the projection of a load reactive current on the PCC reactive current has the same sign with the PCC reactive current, then this load’s reactive current contribution is in proportion to its reactive current projection.

According to wear and energy-saving principle of three-phase asynchronous motor,relations between pressure of motor and load are researched herein that is pressure is restrained by the load to rate.

(1) Pt/TiO_2 and Ag/TiO_2 were characterized with XRF, TEM and XRD and the result showed that Pt doping or Ag doping had no effect on crystal structure of TiO_2 and Pt and Ag are distributed on surface of TiO_2 evenly with small grain size, some even reached l~2nm.

The effect of load of Co and Ag on the CaFe0.3Ni0.7O3 is studied, and indicates that the activity of CaFe0.3Ni0.7O3 supporting Co is muchlower, while the activity of CaFeo. 3Ni0.7O3 supporting Ag is increased and that the rate of degradation of acid red B is 96%.

The changes in the thymus mass and histostructure suggest that the functional load on the thymus increased under studied the experimental conditions.

Laser radiation stimulated regenerative activity of the skeletal muscle and favored a more even distribution of load on the thymus (a smooth decrease in its weight and slow aplasia).

The load on the thymus increased, its weight and cortical layer restoration decelerated, and aplasia was observed.

For the direct problem in the case of supersonic flow an expression is derived for finding the load on the wing with maximal allowance for the wing geometry.

In the inverse problem for supersonic and subsonic flows, expressions are derived for finding the wing geometry from given values of the load on the wing and the variation of the load along the span of the wing.

It is found that the ratio of initial cracking load to maximum load is 0.67-0.71 and the ratio of initial fracture toughness to unstable fracture toughness is 0.45-0.50.

Physiological basis of differences in the body tolerance to submaximal physical load to capacity in healthy young individuals

A new method for studying charge degradation of MIS structures by applying a controlled current load to the structure and taking the time dependence of the voltage is suggested.

Optimization of the parameters of an acoustic delay line by applying a rear acoustic load to a piezoelectric transducer

Application of a load to both YBCO and PBCO in the orthorhombic phase causes an increase in the chemical potential within the 0.5>amp;lt;x>amp;lt;0.8 interval, which is interpreted as a phase-separation region.

The effect of electric load on the piezoelectric vibrational system due to electroacoustic coupling was analytically investigated. The analytical results shown that: (1) when load impedance continually changes from -∞ to+∞, the mechanical resonant frequency of the system would fill all frequency domain from 0 to ∞; (2) the displacement and stress distributions also would change, even the displacement may be zero at both free ends (i.e. at points where stress is equal to zero).

A new circuit of angle transducer is described. It is a phase-in-verted rectifying and filtering circuit consisting of a selsyn, diodes, resistors andcapacitors etc. The transducer can change angle displacement into d. c. voltage. Thereis a relationship of sine function between d. c. voltage output and angle displace-ment input in every operating intervals. The main advantage of the transducer is thatit can eliminate the null-position voltage, which exists in the form of the residuala. c. voltage output in the...

A new circuit of angle transducer is described. It is a phase-in-verted rectifying and filtering circuit consisting of a selsyn, diodes, resistors andcapacitors etc. The transducer can change angle displacement into d. c. voltage. Thereis a relationship of sine function between d. c. voltage output and angle displace-ment input in every operating intervals. The main advantage of the transducer is thatit can eliminate the null-position voltage, which exists in the form of the residuala. c. voltage output in the case of using selsyn only, therefore the precision of themeasurement can be greatly improved. Besides, the circuit structure of the transdu-cer is simple. It is easy both in implementation and regulation. It is cheap in cost.In short, it is a simple, reliable, economical and practical angle transducer. In thispaper, the output characteristic (voltage-angle characteristic) of the circuit of angletransducer is theoretically analysed in detail and is studied by experiments. Quanti-tative relationships between output characteristic and parameters of the circuit areobtained, and simple and practical formulas for design are derived. For example,output characteristic is analysed and operating intervals are divided under the load-ed and non-loaded conditions. The load effects upon the range of operating inter-vals are discussed. The problems such as regulation of the transfer coefficient and"zero", extension and reduction of range, angle and voltage displacement of outputcharacteristic are also discussed. Therefore, output characteristic curve can be moved,extended and reduced along α-axis or U-axis on Decker coordinate plane. Consequ-ently, the transducer can be made to satisfy the design specifications presented bythe users. Based on theoretical and experimental study, principles of choosing circuitcomponents are presented according to the design formulas derived and the designdemands, and a new method of determining parameters of components by means ofthe calculation and the experiment is found. In the end, a design example of angletransducer circuit is given.

Eecently, in our papers[1,2] the effect of electric load on the characteristics of piezoelectric vibration system has been obtained. The resonant frequency of such a system changes continually with the changing of the electric load. In accordance with this effect, we made piezoelectric frequency-tunable transducers. In this paper, the principle of this freqency-tunable piezoelectric transducer is described.