불연속적인 고전압 직류를 전원으로 하여 교류로 변환하기 위한 회생에너지 전력변환장치가 제공된다. 회생에너지 전력변환장치는 가선전압(VIn(t))을 감지하고, 회생에너지 발생에 의한 고전압의 발생을 감지하는 가선전압 검출부와, 가선전압(VIn(t))을 분할하기 위해 직렬로 연결되는 복수의 컨버터모듈 및 복수의 컨버터모듈과 각각 병렬로 연결되는 복수의 모듈전압 검출부를 포함하는 전압조정 컨버터와, 전압조정 컨버터에서 출력된 직류 전력을 교류로 변환하여 계통에 전달하는 직류-교류 인버터와, 가선전압 검출부의 가선전압(VIn(t))을 수신받아 전압조정 컨버터와 직류-교류 인버터의 동작을 제어하고, 복수의 모듈전압 검출부의 가선전압(VIn(t))을 수신받아 가선전압(VIn(t))을 모듈 개수(n)로 동등하게 나눈 값(VIn(t)/n)과 복수의 컨버터모듈의 각각의 직류전압(Vi(t))을 비교하여 복수의 컨버터모듈 사이의 전압 불균형을 감지하는 제어기를 포함한다.
A regenerative energy power conversion device for converting discontinuous high voltage direct current into alternating current as a power source is provided. The regenerative energy power conversion device comprises: a line voltage detection unit which detects the line voltage (V_In(t)) and the generation of high voltage by regenerative energy; a voltage regulation converter that includes a plurality of converter modules connected in series to divide the line voltage (V_In(t)) and a plurality of module voltage detectors each connected in parallel with the plurality of converter modules; a DC-AC inverter which converts the direct current power output from a voltage regulation converter into alternating current and delivers it to the grid; and a controller which receives the line voltage (V_In(t)) from the line voltage detection unit to control the operations of the voltage regulation converter and the DC-AC inverter, receives the line voltage (V_In(t)) from the plurality of module voltage detectors, compares the value of the line voltage (V_In(t)) equally divided by the number of modules (n) (V_i(t)/n) with each of the direct voltages (V_i(t)) of the plurality of converter modules, and detects voltage imbalance among the plurality of converter modules.
Power converter for regeneration energy
회생에너지 전력변환장치
2024-09-04
Patent
Electronic Resource
Korean
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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