RU2000120181A - METHOD OF OPTIMIZED POWER AND EFFICIENCY OF REGULATION OF SYNCHRONOUS ELECTRIC MACHINES - Google Patents

Claims (10)

1. A method for optimizing the power and efficiency (efficiency) of regulating a generator with a corresponding converter bridge, primarily a synchronous electric machine, in which the field current (I _E ) passed through the field winding is controlled so that the output voltage of the generator reaches a predetermined value, and further regulating the phase currents of the generator, characterized in that they form at least three regulation ranges in which the regulation of the excitation current and phase generator currents are carried out according to various criteria. 2. The method according to p. 1, characterized in that the phase control ranges are formed depending on the output power (P _GEN ) of the generator and / or the rotational speed (n _G ) of the generator rotor.  3. The method according to p. 1 or 2, characterized in that the regulation is carried out in such a way that for any frequency of rotation of the rotor of the generator and any value of the required power of the generator, it is possible to freely select the magnitude and phase of the excitation current and phase current or phase currents.  4. The method according to any one of the preceding paragraphs, characterized in that in the first regulation range the excitation current is adjusted to the maximum possible value, the excitation current is also adjusted to the maximum possible value in the second regulation range, but the phase angle of the phase current is selected so that the phase voltage took the maximum possible value, and in the third control range the generator is transferred to a mode of operation in which the phase current and phase voltage coincide in phase and coefficient ient power cosφ equals 1 thereby, and the excitation current is controlled so that the angle φ is 0.  5. The method according to any one of the preceding paragraphs, characterized in that in the fourth control range, when the specified threshold voltage is exceeded, the generator windings are short-circuited by appropriate control of the converter elements and the field current is reduced. 6. The method according to any of the preceding paragraphs, characterized in that the values necessary for controlling the values of I _Ezad , I _dzad and I _{qzad are} determined using multidimensional tables. 7. Device for optimized power and efficiency regulation of a generator with a corresponding converter bridge, primarily a synchronous electric machine, having a regulator for regulating the excitation current (I _E ) passed through the field winding and another regulator for regulating the phase currents of the generator, characterized by the presence of a master regulator which is associated with the indicated two other controllers and which serves to set the given values for them.  8. The device according to claim 7, characterized in that a fourth regulator is provided as a voltage regulator comparing the voltage at the output of the valve converter with a given voltage and outputting a predetermined power value to the driving regulator.  9. The device according to claim 7 or 8, characterized in that the converting bridge is a pulse inverter with a specified number of elements and a capacitor of a DC link.  10. The device according to any one of paragraphs. 7-9, characterized in that it is an integral part of the vehicle, and at least one of the regulators has computing means for performing regulatory operations and / or for communication with a computing device available in the vehicle.