Voltage Regulator & Rectifier (VRR) ECU
SEDEMAC's VRR is the combination of voltage regulator and rectifier circuits embedded in single component. The voltage regulator is the key part of an electrical charging system in 2 & 3 wheelers. It restricts the battery from being overcharged. These are normally single phase and three phase voltage regulators. Voltage rectifier is the distinct and equally important part as the regulator. It converts the alternating current (AC) produced by the stator & rotor flywheel to direct current (DC), which is required to charge battery & the DC operated system.
Voltage rectifier uses a set of diodes as a part of rectifier circuit. The diodes allow the current to flow in a single direction. The diodes filter the negative portion of the AC wave and allow only the positive polarity current to flow. Because of this diode bridge, the electrical current from the stator is rectified onto DC. This DC current is used to charge the vehicle battery.
The voltage regulator does a separate function that monitors battery charge and compares it with the predefined regulation point. When the battery charge reaches the regulation point, the regulator control circuit closes the switch with the help of SCR (Silicon Controlled Rectifiers), making a direct connection to the ground. This process dissipates heat throughout the regulator body as excess current is bled off to maintain constant voltage. SEDEMAC VRR body is designed in such a way that it not only protects the internal components from dust, vibration and other elements, but also efficiently dissipates the heat, providing higher reliability and longer product life.
SEDEMAC offers stabilized and regulated AC & DC power supply to vehicle for uninterrupted and smooth operation of vehicle and battery charging. SEDEMAC’s VRR offers best-in-class reliability with higher customer satisfaction.
SEDEMAC has designed a VRR circuit hardware in such a way that it has built-in voltage storage capacity that helps in quick response to kick start in the absence of vehicle battery.
SEDEMAC provides VRR to major manufacturers / OEMs of small spark ignited engines / vehicles. As of December 2017, VRR is in use, in over 13 million engines / vehicles across 25+ vehicle models.
Yes. SEDEMAC’s VRR withstands the transient conditions as per SAE J1211, such as load dump, inductive load switching transient, alternator field decay transient, coupling transient, electrical noise, etc. simulated at vehicle level.
All SEDEMAC’s VRR comply with the international industrial standards and are highly resistive to dust as per JIS R 5210 & JIS D 0270 standards, water as per JIS D 0203 standard, and vibration as per JIS D 1601 standard.
SEDEMAC provides solutions for all possible combinations of vehicle electrical configuration.
Main variants of SEDEMAC VRR range is listed below:
Operating temperature: - 10 ̊ C to 80 ̊ C
Humidity: 95 ~ 98 %
Efficiency: >95% min. throughout the operating speed.
Load regulation: <2%